./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.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_SAX_nondet_test1-2.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 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:23:28,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:23:28,389 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:23:28,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:23:28,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:23:28,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:23:28,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:23:28,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:23:28,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:23:28,416 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:23:28,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:23:28,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:23:28,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:23:28,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:23:28,417 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:23:28,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:23:28,418 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:23:28,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:23:28,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:23:28,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:23:28,418 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:23:28,418 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:23:28,418 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:23:28,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:23:28,418 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:23:28,419 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:23:28,419 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:23:28,419 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:23:28,419 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:23:28,419 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:23:28,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:23:28,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:23:28,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:23:28,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:23:28,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:23:28,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:23:28,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:23:28,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:23:28,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:23:28,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:23:28,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:23:28,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:23:28,420 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 -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2025-02-06 12:23:28,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:23:28,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:23:28,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:23:28,681 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:23:28,681 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:23:28,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2025-02-06 12:23:29,862 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb9379283/8fcf38d06f5745f9baca2c06460bcddb/FLAG85fe45de3 [2025-02-06 12:23:30,185 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:23:30,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2025-02-06 12:23:30,197 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb9379283/8fcf38d06f5745f9baca2c06460bcddb/FLAG85fe45de3 [2025-02-06 12:23:30,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb9379283/8fcf38d06f5745f9baca2c06460bcddb [2025-02-06 12:23:30,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:23:30,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:23:30,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:23:30,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:23:30,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:23:30,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:23:30" (1/1) ... [2025-02-06 12:23:30,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b49333d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:30, skipping insertion in model container [2025-02-06 12:23:30,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:23:30" (1/1) ... [2025-02-06 12:23:30,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:23:30,719 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 12:23:30,736 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 12:23:30,738 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 12:23:30,740 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 12:23:30,744 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 12:23:30,757 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 12:23:30,758 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 12:23:30,760 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 12:23:30,761 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 12:23:30,761 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 12:23:30,765 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 12:23:30,768 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 12:23:30,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:23:30,783 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 12:23:30,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5434b4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:30, skipping insertion in model container [2025-02-06 12:23:30,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:23:30,784 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:23:30,786 INFO L158 Benchmark]: Toolchain (without parser) took 343.79ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 87.2MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:23:30,788 INFO L158 Benchmark]: CDTParser took 0.19ms. 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 12:23:30,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.73ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 87.2MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:23:30,789 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.73ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 87.2MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 753]: 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_SAX_nondet_test1-2.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 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:23:32,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:23:32,839 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:23:32,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:23:32,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:23:32,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:23:32,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:23:32,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:23:32,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:23:32,864 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:23:32,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:23:32,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:23:32,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:23:32,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:23:32,865 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:23:32,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:23:32,865 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:23:32,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:23:32,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:23:32,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:23:32,865 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:23:32,866 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:23:32,866 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:23:32,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:23:32,866 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:23:32,866 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:23:32,866 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:23:32,866 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:23:32,866 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:23:32,866 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:23:32,866 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:23:32,866 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:23:32,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:23:32,867 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:23:32,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:23:32,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:23:32,867 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:23:32,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:23:32,867 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:23:32,867 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:23:32,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:23:32,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:23:32,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:23:32,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:23:32,868 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 -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2025-02-06 12:23:33,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:23:33,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:23:33,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:23:33,179 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:23:33,179 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:23:33,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2025-02-06 12:23:34,462 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8afb6979e/0c036f9cd84542039bf1ffd1b2b3ac4d/FLAGdecbbd6a2 [2025-02-06 12:23:34,723 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:23:34,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2025-02-06 12:23:34,740 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8afb6979e/0c036f9cd84542039bf1ffd1b2b3ac4d/FLAGdecbbd6a2 [2025-02-06 12:23:34,756 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8afb6979e/0c036f9cd84542039bf1ffd1b2b3ac4d [2025-02-06 12:23:34,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:23:34,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:23:34,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:23:34,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:23:34,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:23:34,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:23:34" (1/1) ... [2025-02-06 12:23:34,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2bb37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:34, skipping insertion in model container [2025-02-06 12:23:34,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:23:34" (1/1) ... [2025-02-06 12:23:34,797 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:23:35,082 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 12:23:35,115 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 12:23:35,125 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 12:23:35,131 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 12:23:35,136 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 12:23:35,154 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 12:23:35,156 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 12:23:35,158 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 12:23:35,161 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 12:23:35,162 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 12:23:35,163 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 12:23:35,166 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 12:23:35,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:23:35,179 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:23:35,192 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:23:35,231 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 12:23:35,243 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 12:23:35,244 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 12:23:35,246 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 12:23:35,252 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 12:23:35,264 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 12:23:35,265 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 12:23:35,266 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 12:23:35,266 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 12:23:35,271 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 12:23:35,272 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 12:23:35,278 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 12:23:35,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:23:35,287 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:23:35,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:23:35,393 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:23:35,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35 WrapperNode [2025-02-06 12:23:35,394 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:23:35,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:23:35,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:23:35,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:23:35,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,416 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,448 INFO L138 Inliner]: procedures = 179, calls = 221, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 729 [2025-02-06 12:23:35,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:23:35,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:23:35,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:23:35,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:23:35,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,468 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,510 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2025-02-06 12:23:35,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,536 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,545 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:23:35,553 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:23:35,553 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:23:35,553 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:23:35,557 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (1/1) ... [2025-02-06 12:23:35,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:23:35,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:35,590 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 12:23:35,594 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 12:23:35,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:23:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:23:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:23:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:23:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:23:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:23:35,616 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:23:35,616 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:23:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:23:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:23:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:23:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:23:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:23:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:23:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:23:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:23:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:23:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:23:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:23:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:23:35,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:23:35,774 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:23:35,776 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:23:37,732 INFO L? ?]: Removed 893 outVars from TransFormulas that were not future-live. [2025-02-06 12:23:37,732 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:23:37,755 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:23:37,755 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:23:37,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:23:37 BoogieIcfgContainer [2025-02-06 12:23:37,756 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:23:37,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:23:37,758 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:23:37,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:23:37,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:23:34" (1/3) ... [2025-02-06 12:23:37,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1bcda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:23:37, skipping insertion in model container [2025-02-06 12:23:37,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:23:35" (2/3) ... [2025-02-06 12:23:37,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1bcda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:23:37, skipping insertion in model container [2025-02-06 12:23:37,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:23:37" (3/3) ... [2025-02-06 12:23:37,762 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test1-2.i [2025-02-06 12:23:37,772 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:23:37,773 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_nondet_test1-2.i that has 3 procedures, 845 locations, 1 initial locations, 25 loop locations, and 425 error locations. [2025-02-06 12:23:37,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:23:37,834 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;@1947249d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:23:37,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2025-02-06 12:23:37,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 840 states, 413 states have (on average 2.2106537530266346) internal successors, (913), 835 states have internal predecessors, (913), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:23:37,842 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:37,842 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:23:37,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr423REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:37,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash 906557908, now seen corresponding path program 1 times [2025-02-06 12:23:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:37,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122962912] [2025-02-06 12:23:37,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:37,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:37,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:37,856 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 12:23:37,858 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 12:23:37,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:23:37,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:23:37,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:37,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:37,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 12:23:37,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:37,959 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 12:23:37,959 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:37,960 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:37,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122962912] [2025-02-06 12:23:37,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122962912] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:37,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:37,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:23:37,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944760756] [2025-02-06 12:23:37,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:37,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 12:23:37,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:37,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 12:23:37,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 12:23:37,980 INFO L87 Difference]: Start difference. First operand has 840 states, 413 states have (on average 2.2106537530266346) internal successors, (913), 835 states have internal predecessors, (913), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 12:23:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:38,016 INFO L93 Difference]: Finished difference Result 830 states and 868 transitions. [2025-02-06 12:23:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 12:23:38,018 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2025-02-06 12:23:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:38,025 INFO L225 Difference]: With dead ends: 830 [2025-02-06 12:23:38,025 INFO L226 Difference]: Without dead ends: 828 [2025-02-06 12:23:38,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 12:23:38,028 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:38,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:23:38,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2025-02-06 12:23:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2025-02-06 12:23:38,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 407 states have (on average 2.113022113022113) internal successors, (860), 823 states have internal predecessors, (860), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 866 transitions. [2025-02-06 12:23:38,103 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 866 transitions. Word has length 5 [2025-02-06 12:23:38,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:38,103 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 866 transitions. [2025-02-06 12:23:38,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 12:23:38,103 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 866 transitions. [2025-02-06 12:23:38,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:23:38,104 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:38,104 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:23:38,111 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 12:23:38,304 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 12:23:38,305 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr423REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:38,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:38,306 INFO L85 PathProgramCache]: Analyzing trace with hash 906557939, now seen corresponding path program 1 times [2025-02-06 12:23:38,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:38,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613803254] [2025-02-06 12:23:38,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:38,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:38,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:38,308 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 12:23:38,310 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 12:23:38,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:23:38,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:23:38,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:38,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:38,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:23:38,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:38,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:23:38,423 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 12:23:38,423 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:38,423 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613803254] [2025-02-06 12:23:38,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613803254] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:38,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:38,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:23:38,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142620477] [2025-02-06 12:23:38,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:38,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:23:38,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:38,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:23:38,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:23:38,424 INFO L87 Difference]: Start difference. First operand 828 states and 866 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 12:23:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:39,450 INFO L93 Difference]: Finished difference Result 780 states and 819 transitions. [2025-02-06 12:23:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:23:39,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2025-02-06 12:23:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:39,453 INFO L225 Difference]: With dead ends: 780 [2025-02-06 12:23:39,453 INFO L226 Difference]: Without dead ends: 780 [2025-02-06 12:23:39,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:23:39,454 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 519 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:39,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 621 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-06 12:23:39,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2025-02-06 12:23:39,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 779. [2025-02-06 12:23:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 407 states have (on average 1.9926289926289926) internal successors, (811), 774 states have internal predecessors, (811), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:39,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 817 transitions. [2025-02-06 12:23:39,473 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 817 transitions. Word has length 5 [2025-02-06 12:23:39,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:39,473 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 817 transitions. [2025-02-06 12:23:39,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 12:23:39,473 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 817 transitions. [2025-02-06 12:23:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:23:39,474 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:39,474 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:23:39,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 12:23:39,674 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 12:23:39,675 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr424REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:39,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash 906557940, now seen corresponding path program 1 times [2025-02-06 12:23:39,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:39,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872768690] [2025-02-06 12:23:39,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:39,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:39,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:39,678 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 12:23:39,679 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 12:23:39,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:23:39,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:23:39,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:39,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:39,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:23:39,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:39,769 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 12:23:39,780 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 12:23:39,780 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:39,781 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:39,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872768690] [2025-02-06 12:23:39,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872768690] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:39,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:39,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:23:39,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023388668] [2025-02-06 12:23:39,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:39,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:23:39,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:39,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:23:39,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:23:39,782 INFO L87 Difference]: Start difference. First operand 779 states and 817 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 12:23:40,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:40,858 INFO L93 Difference]: Finished difference Result 854 states and 896 transitions. [2025-02-06 12:23:40,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:23:40,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2025-02-06 12:23:40,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:40,863 INFO L225 Difference]: With dead ends: 854 [2025-02-06 12:23:40,863 INFO L226 Difference]: Without dead ends: 854 [2025-02-06 12:23:40,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:23:40,864 INFO L435 NwaCegarLoop]: 686 mSDtfsCounter, 269 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:40,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 970 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 12:23:40,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2025-02-06 12:23:40,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 807. [2025-02-06 12:23:40,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 446 states have (on average 1.9641255605381165) internal successors, (876), 802 states have internal predecessors, (876), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 882 transitions. [2025-02-06 12:23:40,875 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 882 transitions. Word has length 5 [2025-02-06 12:23:40,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:40,876 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 882 transitions. [2025-02-06 12:23:40,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 12:23:40,876 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 882 transitions. [2025-02-06 12:23:40,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:23:40,876 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:40,876 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:23:40,882 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 12:23:41,076 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 12:23:41,077 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:41,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:41,077 INFO L85 PathProgramCache]: Analyzing trace with hash 905896602, now seen corresponding path program 1 times [2025-02-06 12:23:41,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:41,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73871] [2025-02-06 12:23:41,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:41,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:41,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:41,084 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 12:23:41,085 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 12:23:41,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:23:41,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:23:41,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:41,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:41,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:23:41,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:41,169 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 12:23:41,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:41,170 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:41,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73871] [2025-02-06 12:23:41,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73871] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:41,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:41,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:23:41,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500329705] [2025-02-06 12:23:41,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:41,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:23:41,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:41,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:23:41,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:23:41,171 INFO L87 Difference]: Start difference. First operand 807 states and 882 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 12:23:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:41,560 INFO L93 Difference]: Finished difference Result 1118 states and 1235 transitions. [2025-02-06 12:23:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:23:41,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2025-02-06 12:23:41,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:41,564 INFO L225 Difference]: With dead ends: 1118 [2025-02-06 12:23:41,564 INFO L226 Difference]: Without dead ends: 1118 [2025-02-06 12:23:41,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 12:23:41,564 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 332 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:41,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2374 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 12:23:41,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2025-02-06 12:23:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 897. [2025-02-06 12:23:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 536 states have (on average 1.914179104477612) internal successors, (1026), 892 states have internal predecessors, (1026), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:41,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1032 transitions. [2025-02-06 12:23:41,581 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1032 transitions. Word has length 5 [2025-02-06 12:23:41,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:41,582 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 1032 transitions. [2025-02-06 12:23:41,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 12:23:41,582 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1032 transitions. [2025-02-06 12:23:41,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 12:23:41,582 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:41,582 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:23:41,588 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 12:23:41,787 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 12:23:41,787 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr106ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:41,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:41,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1311995688, now seen corresponding path program 1 times [2025-02-06 12:23:41,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:41,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042834892] [2025-02-06 12:23:41,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:41,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:41,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:41,790 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 12:23:41,791 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 12:23:41,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 12:23:41,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 12:23:41,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:41,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:41,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:23:41,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:41,866 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 12:23:41,867 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:41,867 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:41,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042834892] [2025-02-06 12:23:41,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042834892] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:41,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:41,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:23:41,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180645140] [2025-02-06 12:23:41,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:41,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:23:41,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:41,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:23:41,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:23:41,868 INFO L87 Difference]: Start difference. First operand 897 states and 1032 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 12:23:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:41,886 INFO L93 Difference]: Finished difference Result 897 states and 1031 transitions. [2025-02-06 12:23:41,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:23:41,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2025-02-06 12:23:41,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:41,889 INFO L225 Difference]: With dead ends: 897 [2025-02-06 12:23:41,889 INFO L226 Difference]: Without dead ends: 897 [2025-02-06 12:23:41,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 12:23:41,889 INFO L435 NwaCegarLoop]: 803 mSDtfsCounter, 7 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:41,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2405 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:23:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2025-02-06 12:23:41,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2025-02-06 12:23:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 536 states have (on average 1.912313432835821) internal successors, (1025), 892 states have internal predecessors, (1025), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1031 transitions. [2025-02-06 12:23:41,916 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1031 transitions. Word has length 7 [2025-02-06 12:23:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:41,916 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 1031 transitions. [2025-02-06 12:23:41,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 12:23:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1031 transitions. [2025-02-06 12:23:41,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 12:23:41,917 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:41,917 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:23:41,926 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 12:23:42,118 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 12:23:42,118 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:42,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:42,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1437066456, now seen corresponding path program 1 times [2025-02-06 12:23:42,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:42,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788501040] [2025-02-06 12:23:42,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:42,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:42,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:42,121 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 12:23:42,124 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 12:23:42,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 12:23:42,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 12:23:42,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:42,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:42,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 12:23:42,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:42,199 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 12:23:42,199 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:42,199 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:42,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788501040] [2025-02-06 12:23:42,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788501040] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:42,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:42,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:23:42,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653677909] [2025-02-06 12:23:42,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:42,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:23:42,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:42,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:23:42,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:23:42,200 INFO L87 Difference]: Start difference. First operand 897 states and 1031 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12:23:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:42,794 INFO L93 Difference]: Finished difference Result 898 states and 1031 transitions. [2025-02-06 12:23:42,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:23:42,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2025-02-06 12:23:42,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:42,797 INFO L225 Difference]: With dead ends: 898 [2025-02-06 12:23:42,797 INFO L226 Difference]: Without dead ends: 891 [2025-02-06 12:23:42,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 12:23:42,798 INFO L435 NwaCegarLoop]: 805 mSDtfsCounter, 0 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:42,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1241 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 12:23:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2025-02-06 12:23:42,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2025-02-06 12:23:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 530 states have (on average 1.920754716981132) internal successors, (1018), 886 states have internal predecessors, (1018), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1024 transitions. [2025-02-06 12:23:42,811 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1024 transitions. Word has length 10 [2025-02-06 12:23:42,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:42,811 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1024 transitions. [2025-02-06 12:23:42,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12:23:42,812 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1024 transitions. [2025-02-06 12:23:42,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 12:23:42,812 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:42,812 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:23:42,818 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 12:23:43,012 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 12:23:43,012 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:43,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash -382405817, now seen corresponding path program 1 times [2025-02-06 12:23:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:43,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842351035] [2025-02-06 12:23:43,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:43,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:43,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:43,016 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 12:23:43,016 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 12:23:43,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:23:43,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:23:43,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:43,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:43,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:23:43,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:43,107 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 12:23:43,202 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 12:23:43,202 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:43,202 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:43,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842351035] [2025-02-06 12:23:43,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842351035] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:43,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:43,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:23:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620020809] [2025-02-06 12:23:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:43,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:23:43,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:43,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:23:43,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:23:43,203 INFO L87 Difference]: Start difference. First operand 891 states and 1024 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 12:23:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:44,667 INFO L93 Difference]: Finished difference Result 1068 states and 1238 transitions. [2025-02-06 12:23:44,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:23:44,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2025-02-06 12:23:44,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:44,674 INFO L225 Difference]: With dead ends: 1068 [2025-02-06 12:23:44,674 INFO L226 Difference]: Without dead ends: 1068 [2025-02-06 12:23:44,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 12:23:44,675 INFO L435 NwaCegarLoop]: 750 mSDtfsCounter, 434 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:44,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1462 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-06 12:23:44,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2025-02-06 12:23:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1005. [2025-02-06 12:23:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 644 states have (on average 1.8664596273291925) internal successors, (1202), 1000 states have internal predecessors, (1202), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1208 transitions. [2025-02-06 12:23:44,692 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1208 transitions. Word has length 15 [2025-02-06 12:23:44,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:44,692 INFO L471 AbstractCegarLoop]: Abstraction has 1005 states and 1208 transitions. [2025-02-06 12:23:44,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 12:23:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1208 transitions. [2025-02-06 12:23:44,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 12:23:44,693 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:44,693 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:23:44,707 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 12:23:44,898 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 12:23:44,898 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:44,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:44,899 INFO L85 PathProgramCache]: Analyzing trace with hash -382405818, now seen corresponding path program 1 times [2025-02-06 12:23:44,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:44,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495098654] [2025-02-06 12:23:44,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:44,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:44,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:44,903 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 12:23:44,904 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 12:23:44,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:23:45,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:23:45,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:45,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:45,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:23:45,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:45,031 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 12:23:45,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:45,032 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:45,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495098654] [2025-02-06 12:23:45,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495098654] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:45,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:45,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:23:45,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561563899] [2025-02-06 12:23:45,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:45,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:23:45,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:45,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:23:45,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:23:45,033 INFO L87 Difference]: Start difference. First operand 1005 states and 1208 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 12:23:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:46,133 INFO L93 Difference]: Finished difference Result 990 states and 1124 transitions. [2025-02-06 12:23:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:23:46,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2025-02-06 12:23:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:46,136 INFO L225 Difference]: With dead ends: 990 [2025-02-06 12:23:46,136 INFO L226 Difference]: Without dead ends: 990 [2025-02-06 12:23:46,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 12:23:46,137 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 566 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:46,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 911 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 12:23:46,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2025-02-06 12:23:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 982. [2025-02-06 12:23:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 644 states have (on average 1.7236024844720497) internal successors, (1110), 977 states have internal predecessors, (1110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1116 transitions. [2025-02-06 12:23:46,154 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1116 transitions. Word has length 15 [2025-02-06 12:23:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:46,154 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1116 transitions. [2025-02-06 12:23:46,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 12:23:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1116 transitions. [2025-02-06 12:23:46,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 12:23:46,155 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:46,155 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] [2025-02-06 12:23:46,165 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 12:23:46,356 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 12:23:46,356 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:46,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:46,357 INFO L85 PathProgramCache]: Analyzing trace with hash -570701375, now seen corresponding path program 1 times [2025-02-06 12:23:46,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:46,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251982553] [2025-02-06 12:23:46,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:46,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:46,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:46,363 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 12:23:46,365 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 12:23:46,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 12:23:46,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 12:23:46,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:46,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:46,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:23:46,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:46,493 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 12:23:46,657 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 12:23:46,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:23:47,076 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 12:23:47,077 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:47,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251982553] [2025-02-06 12:23:47,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251982553] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:23:47,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:23:47,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:23:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289727087] [2025-02-06 12:23:47,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:23:47,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:23:47,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:47,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:23:47,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:23:47,079 INFO L87 Difference]: Start difference. First operand 982 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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 12:23:51,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:51,169 INFO L93 Difference]: Finished difference Result 1401 states and 1636 transitions. [2025-02-06 12:23:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:23:51,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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 34 [2025-02-06 12:23:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:51,173 INFO L225 Difference]: With dead ends: 1401 [2025-02-06 12:23:51,176 INFO L226 Difference]: Without dead ends: 1401 [2025-02-06 12:23:51,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 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 12:23:51,181 INFO L435 NwaCegarLoop]: 777 mSDtfsCounter, 1529 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:51,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 2390 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-02-06 12:23:51,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2025-02-06 12:23:51,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1146. [2025-02-06 12:23:51,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 808 states have (on average 1.6608910891089108) internal successors, (1342), 1141 states have internal predecessors, (1342), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1348 transitions. [2025-02-06 12:23:51,207 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1348 transitions. Word has length 34 [2025-02-06 12:23:51,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:51,207 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 1348 transitions. [2025-02-06 12:23:51,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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 12:23:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1348 transitions. [2025-02-06 12:23:51,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-06 12:23:51,208 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:51,208 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] [2025-02-06 12:23:51,221 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 12:23:51,412 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 12:23:51,412 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr336REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:51,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash 121317372, now seen corresponding path program 1 times [2025-02-06 12:23:51,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:51,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937513210] [2025-02-06 12:23:51,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:51,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:51,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:51,418 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 12:23:51,419 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 12:23:51,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-06 12:23:51,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-06 12:23:51,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:51,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:51,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:23:51,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:23:51,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:51,662 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937513210] [2025-02-06 12:23:51,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937513210] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:51,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:51,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:23:51,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861434848] [2025-02-06 12:23:51,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:51,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:23:51,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:51,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:23:51,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:23:51,663 INFO L87 Difference]: Start difference. First operand 1146 states and 1348 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 12:23:51,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:51,740 INFO L93 Difference]: Finished difference Result 835 states and 912 transitions. [2025-02-06 12:23:51,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:23:51,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2025-02-06 12:23:51,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:51,742 INFO L225 Difference]: With dead ends: 835 [2025-02-06 12:23:51,742 INFO L226 Difference]: Without dead ends: 835 [2025-02-06 12:23:51,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 12:23:51,743 INFO L435 NwaCegarLoop]: 722 mSDtfsCounter, 56 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:51,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2093 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:23:51,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2025-02-06 12:23:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 833. [2025-02-06 12:23:51,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 518 states have (on average 1.7451737451737452) internal successors, (904), 828 states have internal predecessors, (904), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 910 transitions. [2025-02-06 12:23:51,752 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 910 transitions. Word has length 50 [2025-02-06 12:23:51,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:51,753 INFO L471 AbstractCegarLoop]: Abstraction has 833 states and 910 transitions. [2025-02-06 12:23:51,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 12:23:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 910 transitions. [2025-02-06 12:23:51,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-06 12:23:51,754 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:51,754 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] [2025-02-06 12:23:51,762 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 12:23:51,955 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 12:23:51,956 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr336REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:51,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:51,956 INFO L85 PathProgramCache]: Analyzing trace with hash -927914300, now seen corresponding path program 1 times [2025-02-06 12:23:51,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:51,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65763038] [2025-02-06 12:23:51,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:51,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:51,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:51,959 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 12:23:51,960 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 12:23:52,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-06 12:23:52,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 12:23:52,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:52,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:52,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:23:52,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:52,168 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 12:23:52,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:23:52,569 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 12:23:52,583 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:23:52,583 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 12:23:52,586 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 12:23:52,587 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:52,588 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65763038] [2025-02-06 12:23:52,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65763038] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:52,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:52,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:23:52,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493892985] [2025-02-06 12:23:52,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:52,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:23:52,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:52,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:23:52,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:23:52,589 INFO L87 Difference]: Start difference. First operand 833 states and 910 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 12:23:53,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:53,699 INFO L93 Difference]: Finished difference Result 795 states and 872 transitions. [2025-02-06 12:23:53,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:23:53,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2025-02-06 12:23:53,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:53,702 INFO L225 Difference]: With dead ends: 795 [2025-02-06 12:23:53,702 INFO L226 Difference]: Without dead ends: 795 [2025-02-06 12:23:53,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:23:53,702 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 855 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:53,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 615 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 12:23:53,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2025-02-06 12:23:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 756. [2025-02-06 12:23:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 479 states have (on average 1.649269311064718) internal successors, (790), 751 states have internal predecessors, (790), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 796 transitions. [2025-02-06 12:23:53,710 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 796 transitions. Word has length 58 [2025-02-06 12:23:53,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:53,710 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 796 transitions. [2025-02-06 12:23:53,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 12:23:53,710 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 796 transitions. [2025-02-06 12:23:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-06 12:23:53,711 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:53,711 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] [2025-02-06 12:23:53,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 12:23:53,915 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 12:23:53,915 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr329REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:53,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1218120369, now seen corresponding path program 1 times [2025-02-06 12:23:53,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:53,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290525138] [2025-02-06 12:23:53,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:53,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:53,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:53,918 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 12:23:53,919 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 12:23:54,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 12:23:54,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 12:23:54,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:54,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:54,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:23:54,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:54,067 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 12:23:54,080 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 12:23:54,113 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 12:23:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:23:54,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:54,122 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290525138] [2025-02-06 12:23:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290525138] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:54,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:23:54,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521366449] [2025-02-06 12:23:54,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:54,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:23:54,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:54,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:23:54,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:23:54,124 INFO L87 Difference]: Start difference. First operand 756 states and 796 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 12:23:55,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:55,296 INFO L93 Difference]: Finished difference Result 755 states and 795 transitions. [2025-02-06 12:23:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:23:55,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2025-02-06 12:23:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:55,299 INFO L225 Difference]: With dead ends: 755 [2025-02-06 12:23:55,299 INFO L226 Difference]: Without dead ends: 755 [2025-02-06 12:23:55,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 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 12:23:55,299 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 2 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:55,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1755 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 12:23:55,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2025-02-06 12:23:55,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 755. [2025-02-06 12:23:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 479 states have (on average 1.6471816283924843) internal successors, (789), 750 states have internal predecessors, (789), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 795 transitions. [2025-02-06 12:23:55,309 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 795 transitions. Word has length 63 [2025-02-06 12:23:55,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:55,310 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 795 transitions. [2025-02-06 12:23:55,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 12:23:55,310 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 795 transitions. [2025-02-06 12:23:55,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-06 12:23:55,311 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:55,311 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] [2025-02-06 12:23:55,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 12:23:55,511 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 12:23:55,512 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:55,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:55,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1218120370, now seen corresponding path program 1 times [2025-02-06 12:23:55,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:55,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476528481] [2025-02-06 12:23:55,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:55,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:55,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:55,516 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 12:23:55,517 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 12:23:55,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 12:23:55,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 12:23:55,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:55,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:55,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 12:23:55,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:55,672 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 12:23:55,682 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 12:23:55,687 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 12:23:55,736 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 12:23:55,762 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 12:23:55,762 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:55,762 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:55,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476528481] [2025-02-06 12:23:55,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476528481] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:55,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:55,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:23:55,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630841358] [2025-02-06 12:23:55,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:55,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:23:55,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:55,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:23:55,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:23:55,763 INFO L87 Difference]: Start difference. First operand 755 states and 795 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 12:23:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:57,127 INFO L93 Difference]: Finished difference Result 754 states and 794 transitions. [2025-02-06 12:23:57,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:23:57,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2025-02-06 12:23:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:57,129 INFO L225 Difference]: With dead ends: 754 [2025-02-06 12:23:57,129 INFO L226 Difference]: Without dead ends: 754 [2025-02-06 12:23:57,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 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 12:23:57,130 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 1 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:57,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1780 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 12:23:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2025-02-06 12:23:57,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2025-02-06 12:23:57,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 478 states have (on average 1.6485355648535565) internal successors, (788), 749 states have internal predecessors, (788), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:23:57,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 794 transitions. [2025-02-06 12:23:57,138 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 794 transitions. Word has length 63 [2025-02-06 12:23:57,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:57,139 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 794 transitions. [2025-02-06 12:23:57,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 12:23:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 794 transitions. [2025-02-06 12:23:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-06 12:23:57,140 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:57,140 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] [2025-02-06 12:23:57,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 12:23:57,344 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 12:23:57,344 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:57,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:57,344 INFO L85 PathProgramCache]: Analyzing trace with hash -423937458, now seen corresponding path program 1 times [2025-02-06 12:23:57,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:57,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753052193] [2025-02-06 12:23:57,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:57,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:57,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:57,348 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 12:23:57,349 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 12:23:57,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-06 12:23:57,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 12:23:57,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:57,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:57,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:23:57,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:57,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:23:57,585 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 12:23:57,595 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 12:23:57,595 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:57,595 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753052193] [2025-02-06 12:23:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753052193] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:57,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:57,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:23:57,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364638696] [2025-02-06 12:23:57,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:57,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:23:57,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:57,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:23:57,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:23:57,596 INFO L87 Difference]: Start difference. First operand 754 states and 794 transitions. Second operand has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 12:23:58,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:58,911 INFO L93 Difference]: Finished difference Result 766 states and 809 transitions. [2025-02-06 12:23:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:23:58,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 71 [2025-02-06 12:23:58,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:58,914 INFO L225 Difference]: With dead ends: 766 [2025-02-06 12:23:58,914 INFO L226 Difference]: Without dead ends: 766 [2025-02-06 12:23:58,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 12:23:58,915 INFO L435 NwaCegarLoop]: 686 mSDtfsCounter, 6 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:58,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2453 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 12:23:58,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2025-02-06 12:23:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 760. [2025-02-06 12:23:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 483 states have (on average 1.6459627329192548) internal successors, (795), 754 states have internal predecessors, (795), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 12:23:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 804 transitions. [2025-02-06 12:23:58,924 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 804 transitions. Word has length 71 [2025-02-06 12:23:58,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:58,924 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 804 transitions. [2025-02-06 12:23:58,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 12:23:58,924 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 804 transitions. [2025-02-06 12:23:58,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-06 12:23:58,925 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:58,925 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] [2025-02-06 12:23:58,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-06 12:23:59,129 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 12:23:59,129 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:59,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:59,130 INFO L85 PathProgramCache]: Analyzing trace with hash -423937457, now seen corresponding path program 1 times [2025-02-06 12:23:59,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:59,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922924103] [2025-02-06 12:23:59,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:59,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:59,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:59,132 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 12:23:59,134 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 12:23:59,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-06 12:23:59,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 12:23:59,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:59,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:59,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:23:59,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:59,334 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 12:23:59,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:23:59,334 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:59,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922924103] [2025-02-06 12:23:59,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922924103] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:23:59,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:23:59,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:23:59,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296547337] [2025-02-06 12:23:59,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:23:59,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:23:59,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:59,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:23:59,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:23:59,336 INFO L87 Difference]: Start difference. First operand 760 states and 804 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 12:23:59,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:59,358 INFO L93 Difference]: Finished difference Result 757 states and 798 transitions. [2025-02-06 12:23:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:23:59,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 71 [2025-02-06 12:23:59,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:59,360 INFO L225 Difference]: With dead ends: 757 [2025-02-06 12:23:59,360 INFO L226 Difference]: Without dead ends: 757 [2025-02-06 12:23:59,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 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 12:23:59,361 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 0 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2077 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 12:23:59,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2077 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:23:59,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2025-02-06 12:23:59,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 757. [2025-02-06 12:23:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 480 states have (on average 1.6479166666666667) internal successors, (791), 752 states have internal predecessors, (791), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:23:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 798 transitions. [2025-02-06 12:23:59,372 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 798 transitions. Word has length 71 [2025-02-06 12:23:59,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:59,372 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 798 transitions. [2025-02-06 12:23:59,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 12:23:59,373 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 798 transitions. [2025-02-06 12:23:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-06 12:23:59,373 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:59,373 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] [2025-02-06 12:23:59,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-06 12:23:59,573 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 12:23:59,574 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:23:59,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:23:59,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2075687700, now seen corresponding path program 1 times [2025-02-06 12:23:59,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:23:59,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178461970] [2025-02-06 12:23:59,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:23:59,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:23:59,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:23:59,577 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 12:23:59,578 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 12:23:59,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-06 12:23:59,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-06 12:23:59,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:23:59,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:23:59,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:23:59,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:23:59,768 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 12:23:59,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:23:59,851 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 12:23:59,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:23:59,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178461970] [2025-02-06 12:23:59,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178461970] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:23:59,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:23:59,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 12:23:59,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268304676] [2025-02-06 12:23:59,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:23:59,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:23:59,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:23:59,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:23:59,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:23:59,852 INFO L87 Difference]: Start difference. First operand 757 states and 798 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 12:23:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:23:59,973 INFO L93 Difference]: Finished difference Result 769 states and 815 transitions. [2025-02-06 12:23:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:23:59,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 72 [2025-02-06 12:23:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:23:59,977 INFO L225 Difference]: With dead ends: 769 [2025-02-06 12:23:59,977 INFO L226 Difference]: Without dead ends: 769 [2025-02-06 12:23:59,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 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 12:23:59,978 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 6 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:23:59,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3456 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:23:59,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2025-02-06 12:23:59,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 767. [2025-02-06 12:23:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 489 states have (on average 1.6482617586912065) internal successors, (806), 761 states have internal predecessors, (806), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:23:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 813 transitions. [2025-02-06 12:23:59,994 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 813 transitions. Word has length 72 [2025-02-06 12:23:59,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:23:59,994 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 813 transitions. [2025-02-06 12:23:59,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 12:23:59,995 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 813 transitions. [2025-02-06 12:23:59,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 12:23:59,996 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:23:59,996 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] [2025-02-06 12:24:00,011 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 12:24:00,196 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 12:24:00,197 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:24:00,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:00,199 INFO L85 PathProgramCache]: Analyzing trace with hash 214430158, now seen corresponding path program 2 times [2025-02-06 12:24:00,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:00,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888930777] [2025-02-06 12:24:00,200 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:24:00,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:00,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:00,202 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 12:24:00,204 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 12:24:00,336 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-02-06 12:24:15,570 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 12:24:15,570 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:24:15,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:15,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 12:24:15,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:15,716 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:24:15,716 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 12:24:15,733 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 12:24:15,863 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:24:15,864 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 12:24:15,894 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 12:24:15,908 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 12:24:15,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:24:15,970 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-06 12:24:15,970 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 12:24:16,012 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:16,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888930777] [2025-02-06 12:24:16,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888930777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:24:16,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1681348237] [2025-02-06 12:24:16,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:24:16,014 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:24:16,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:24:16,056 INFO L229 MonitoredProcess]: Starting monitored process 19 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 12:24:16,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2025-02-06 12:24:16,222 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-02-06 12:24:16,557 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 12:24:16,558 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:24:16,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:16,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:24:16,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:16,675 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 12:24:16,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:24:16,850 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 12:24:16,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1681348237] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:24:16,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:24:16,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-02-06 12:24:16,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934961166] [2025-02-06 12:24:16,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:24:16,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 12:24:16,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:16,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 12:24:16,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=553, Unknown=6, NotChecked=0, Total=650 [2025-02-06 12:24:16,852 INFO L87 Difference]: Start difference. First operand 767 states and 813 transitions. Second operand has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 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 12:24:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:21,152 INFO L93 Difference]: Finished difference Result 783 states and 836 transitions. [2025-02-06 12:24:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-06 12:24:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 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 75 [2025-02-06 12:24:21,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:21,158 INFO L225 Difference]: With dead ends: 783 [2025-02-06 12:24:21,158 INFO L226 Difference]: Without dead ends: 779 [2025-02-06 12:24:21,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=416, Invalid=2333, Unknown=7, NotChecked=0, Total=2756 [2025-02-06 12:24:21,159 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 470 mSDsluCounter, 5236 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 5700 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:21,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 5700 Invalid, 3817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-02-06 12:24:21,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2025-02-06 12:24:21,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 775. [2025-02-06 12:24:21,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 498 states have (on average 1.640562248995984) internal successors, (817), 769 states have internal predecessors, (817), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:24:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 824 transitions. [2025-02-06 12:24:21,177 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 824 transitions. Word has length 75 [2025-02-06 12:24:21,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:21,178 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 824 transitions. [2025-02-06 12:24:21,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 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 12:24:21,178 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 824 transitions. [2025-02-06 12:24:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-02-06 12:24:21,178 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:21,178 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] [2025-02-06 12:24:21,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2025-02-06 12:24:21,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-06 12:24:21,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:21,579 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:24:21,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash -494502641, now seen corresponding path program 1 times [2025-02-06 12:24:21,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:21,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543861845] [2025-02-06 12:24:21,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:21,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:21,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:21,582 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:21,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 12:24:21,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-06 12:24:21,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-06 12:24:21,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:21,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:21,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 12:24:21,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:22,003 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 12:24:22,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:24:22,540 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 12:24:22,540 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:22,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543861845] [2025-02-06 12:24:22,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543861845] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:24:22,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:24:22,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-06 12:24:22,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740924884] [2025-02-06 12:24:22,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:24:22,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 12:24:22,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:22,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 12:24:22,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-06 12:24:22,543 INFO L87 Difference]: Start difference. First operand 775 states and 824 transitions. Second operand has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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 12:24:23,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:23,786 INFO L93 Difference]: Finished difference Result 799 states and 863 transitions. [2025-02-06 12:24:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 12:24:23,787 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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 81 [2025-02-06 12:24:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:23,789 INFO L225 Difference]: With dead ends: 799 [2025-02-06 12:24:23,789 INFO L226 Difference]: Without dead ends: 793 [2025-02-06 12:24:23,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 12:24:23,789 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 25 mSDsluCounter, 7603 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8297 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:23,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 8297 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 12:24:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2025-02-06 12:24:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2025-02-06 12:24:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 516 states have (on average 1.627906976744186) internal successors, (840), 787 states have internal predecessors, (840), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:24:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 847 transitions. [2025-02-06 12:24:23,797 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 847 transitions. Word has length 81 [2025-02-06 12:24:23,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:23,797 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 847 transitions. [2025-02-06 12:24:23,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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 12:24:23,797 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 847 transitions. [2025-02-06 12:24:23,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 12:24:23,797 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:23,797 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:23,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 12:24:23,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:23,998 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:24:23,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash 461849487, now seen corresponding path program 2 times [2025-02-06 12:24:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:23,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664099191] [2025-02-06 12:24:23,999 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:24:23,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:23,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:24,001 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 12:24:24,002 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 12:24:24,145 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-02-06 12:24:39,070 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 12:24:39,070 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:24:39,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:39,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-02-06 12:24:39,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:39,195 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 12:24:39,207 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:24:39,207 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 12:24:39,255 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 12:24:39,265 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 12:24:39,361 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 22 treesize of output 10 [2025-02-06 12:24:39,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-02-06 12:24:39,772 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:24:39,772 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 62 treesize of output 57 [2025-02-06 12:24:39,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-02-06 12:24:39,847 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 31 treesize of output 13 [2025-02-06 12:24:39,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-02-06 12:24:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-02-06 12:24:39,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:24:40,258 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664099191] [2025-02-06 12:24:40,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664099191] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:24:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1173782840] [2025-02-06 12:24:40,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:24:40,258 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:24:40,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:24:40,261 INFO L229 MonitoredProcess]: Starting monitored process 22 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 12:24:40,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2025-02-06 12:24:40,475 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-02-06 12:24:40,905 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 12:24:40,905 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:24:40,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:40,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 12:24:40,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:41,564 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:24:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:43,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1173782840] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:24:43,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:24:43,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-02-06 12:24:43,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770710883] [2025-02-06 12:24:43,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:24:43,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-06 12:24:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:43,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-06 12:24:43,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2953, Unknown=7, NotChecked=0, Total=3660 [2025-02-06 12:24:43,080 INFO L87 Difference]: Start difference. First operand 793 states and 847 transitions. Second operand has 58 states, 57 states have (on average 3.0701754385964914) internal successors, (175), 58 states have internal predecessors, (175), 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 12:25:00,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:25:00,653 INFO L93 Difference]: Finished difference Result 836 states and 920 transitions. [2025-02-06 12:25:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2025-02-06 12:25:00,654 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.0701754385964914) internal successors, (175), 58 states have internal predecessors, (175), 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 93 [2025-02-06 12:25:00,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:25:00,658 INFO L225 Difference]: With dead ends: 836 [2025-02-06 12:25:00,658 INFO L226 Difference]: Without dead ends: 828 [2025-02-06 12:25:00,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3140 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=3108, Invalid=15242, Unknown=10, NotChecked=0, Total=18360 [2025-02-06 12:25:00,663 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 491 mSDsluCounter, 12215 mSDsCounter, 0 mSdLazyCounter, 9919 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 12679 SdHoareTripleChecker+Invalid, 9973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 9919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:25:00,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 12679 Invalid, 9973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 9919 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2025-02-06 12:25:00,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2025-02-06 12:25:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 826. [2025-02-06 12:25:00,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 550 states have (on average 1.6018181818181818) internal successors, (881), 820 states have internal predecessors, (881), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:25:00,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 888 transitions. [2025-02-06 12:25:00,675 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 888 transitions. Word has length 93 [2025-02-06 12:25:00,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:25:00,675 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 888 transitions. [2025-02-06 12:25:00,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.0701754385964914) internal successors, (175), 58 states have internal predecessors, (175), 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 12:25:00,675 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 888 transitions. [2025-02-06 12:25:00,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-02-06 12:25:00,676 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:25:00,676 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:00,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-06 12:25:00,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2025-02-06 12:25:01,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-06 12:25:01,081 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:25:01,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:25:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash 617419222, now seen corresponding path program 1 times [2025-02-06 12:25:01,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:25:01,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982900317] [2025-02-06 12:25:01,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:25:01,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:25:01,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:25:01,092 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:25:01,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-06 12:25:01,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-02-06 12:25:01,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-02-06 12:25:01,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:25:01,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:25:01,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 112 conjuncts are in the unsatisfiable core [2025-02-06 12:25:01,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:25:01,481 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 12:25:01,554 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:25:01,554 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 12:25:01,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:25:01,574 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 12:25:01,581 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 12:25:01,640 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 22 treesize of output 10 [2025-02-06 12:25:01,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-02-06 12:25:02,210 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:25:02,211 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 62 treesize of output 57 [2025-02-06 12:25:02,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-02-06 12:25:02,278 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:25:02,279 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 62 treesize of output 57 [2025-02-06 12:25:02,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-02-06 12:25:02,303 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 31 treesize of output 13 [2025-02-06 12:25:02,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-02-06 12:25:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-02-06 12:25:02,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:25:02,399 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2103 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_2103) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_2102 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2103 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_2103) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_2102) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-02-06 12:25:02,417 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_2102 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2103 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2103) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2102) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_2103 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2103) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2025-02-06 12:25:03,142 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2194 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2195 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2102 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2103 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2194))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2195) .cse0 v_ArrVal_2103) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_2102) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_2194 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2195 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2103 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2195) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2194) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2103) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2025-02-06 12:25:03,148 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:25:03,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982900317] [2025-02-06 12:25:03,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982900317] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:25:03,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1831637095] [2025-02-06 12:25:03,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:25:03,148 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:25:03,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:25:03,150 INFO L229 MonitoredProcess]: Starting monitored process 24 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 12:25:03,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2025-02-06 12:25:03,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes.