./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.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 c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:54:32,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:54:32,428 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 07:54:32,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:54:32,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:54:32,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:54:32,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:54:32,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:54:32,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:54:32,461 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:54:32,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:54:32,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:54:32,461 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:54:32,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:54:32,461 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:54:32,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:54:32,462 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:54:32,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:54:32,463 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:54:32,463 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:54:32,463 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 07:54:32,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 07:54:32,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:54:32,463 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:54:32,463 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:54:32,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:54:32,463 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 -> c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af [2025-02-08 07:54:32,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:54:32,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:54:32,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:54:32,694 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:54:32,694 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:54:32,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2025-02-08 07:54:33,856 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c7902bd1d/0cf005f423ba4892974594ebf4c6f265/FLAG02525da3e [2025-02-08 07:54:34,220 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:54:34,221 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2025-02-08 07:54:34,232 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c7902bd1d/0cf005f423ba4892974594ebf4c6f265/FLAG02525da3e [2025-02-08 07:54:34,241 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c7902bd1d/0cf005f423ba4892974594ebf4c6f265 [2025-02-08 07:54:34,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:54:34,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:54:34,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:34,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:54:34,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:54:34,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:34" (1/1) ... [2025-02-08 07:54:34,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd5148c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:34, skipping insertion in model container [2025-02-08 07:54:34,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:34" (1/1) ... [2025-02-08 07:54:34,293 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:54:34,678 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,704 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,706 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,713 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,719 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,755 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,758 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,760 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,766 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,790 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,790 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,791 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,791 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,801 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,801 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,803 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,803 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,810 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,811 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,812 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,812 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,819 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,819 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,820 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,820 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,821 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,822 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,823 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,824 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,824 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,826 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,826 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,827 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,827 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,829 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:34,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:34,854 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-08 07:54:34,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@41a1eca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:34, skipping insertion in model container [2025-02-08 07:54:34,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:34,855 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-08 07:54:34,859 INFO L158 Benchmark]: Toolchain (without parser) took 612.07ms. Allocated memory is still 201.3MB. Free memory was 155.2MB in the beginning and 125.8MB in the end (delta: 29.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 07:54:34,859 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 218.1MB. Free memory is still 133.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 07:54:34,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 609.36ms. Allocated memory is still 201.3MB. Free memory was 154.8MB in the beginning and 125.8MB in the end (delta: 29.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 07:54:34,860 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 218.1MB. Free memory is still 133.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 609.36ms. Allocated memory is still 201.3MB. Free memory was 154.8MB in the beginning and 125.8MB in the end (delta: 29.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 760]: 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_JEN_test10-3.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 c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:54:36,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:54:36,688 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 07:54:36,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:54:36,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:54:36,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:54:36,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:54:36,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:54:36,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:54:36,723 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:54:36,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:54:36,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:54:36,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:54:36,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:54:36,724 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:54:36,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:54:36,725 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:54:36,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:54:36,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:54:36,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:54:36,725 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:54:36,725 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:54:36,725 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:54:36,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:54:36,726 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:54:36,726 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 07:54:36,726 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 07:54:36,726 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:54:36,726 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:54:36,726 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:54:36,726 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:54:36,727 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:54:36,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:54:36,727 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:54:36,727 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:54:36,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:54:36,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:54:36,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:54:36,727 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 07:54:36,727 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 07:54:36,727 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:54:36,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:54:36,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:54:36,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:54:36,727 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 -> c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af [2025-02-08 07:54:36,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:54:36,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:54:36,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:54:36,985 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:54:36,986 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:54:36,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2025-02-08 07:54:38,153 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e4718ba72/51be56c279e74bd684b722e4a76b6b4e/FLAG6b25febea [2025-02-08 07:54:38,448 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:54:38,449 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2025-02-08 07:54:38,463 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e4718ba72/51be56c279e74bd684b722e4a76b6b4e/FLAG6b25febea [2025-02-08 07:54:38,472 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e4718ba72/51be56c279e74bd684b722e4a76b6b4e [2025-02-08 07:54:38,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:54:38,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:54:38,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:38,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:54:38,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:54:38,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:38" (1/1) ... [2025-02-08 07:54:38,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702e9c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:38, skipping insertion in model container [2025-02-08 07:54:38,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:38" (1/1) ... [2025-02-08 07:54:38,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:54:38,840 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,877 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,884 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,890 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,895 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,929 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,935 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,939 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,948 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,982 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,985 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,988 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:38,988 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,009 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,009 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,015 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,015 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,031 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,032 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,033 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,035 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,048 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,051 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,053 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,053 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,054 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,055 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,057 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,059 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,060 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,065 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,066 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,068 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,068 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,070 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:39,096 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-08 07:54:39,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:54:39,137 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,148 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,149 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,151 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,154 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,173 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,174 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,178 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,180 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,194 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,198 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,199 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,199 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,210 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,210 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,211 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,211 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,220 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,221 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,222 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,223 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,230 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,230 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,231 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,232 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,233 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,235 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,236 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,236 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,236 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,238 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,239 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,239 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,240 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,241 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:39,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:39,255 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 07:54:39,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:39,380 INFO L204 MainTranslator]: Completed translation [2025-02-08 07:54:39,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39 WrapperNode [2025-02-08 07:54:39,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:39,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 07:54:39,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 07:54:39,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 07:54:39,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,468 INFO L138 Inliner]: procedures = 180, calls = 606, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2470 [2025-02-08 07:54:39,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 07:54:39,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 07:54:39,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 07:54:39,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 07:54:39,475 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,627 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 106, 466]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 102 writes are split as follows [0, 4, 98]. [2025-02-08 07:54:39,627 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,668 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 07:54:39,700 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 07:54:39,700 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 07:54:39,700 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 07:54:39,701 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (1/1) ... [2025-02-08 07:54:39,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:54:39,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:39,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 07:54:39,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 07:54:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 07:54:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 07:54:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-08 07:54:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-02-08 07:54:39,746 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-02-08 07:54:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 07:54:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 07:54:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-08 07:54:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 07:54:39,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 07:54:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 07:54:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 07:54:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 07:54:39,747 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 07:54:39,747 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 07:54:39,747 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 07:54:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 07:54:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 07:54:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 07:54:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 07:54:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 07:54:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 07:54:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 07:54:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 07:54:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 07:54:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 07:54:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 07:54:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 07:54:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-08 07:54:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 07:54:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 07:54:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-08 07:54:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 07:54:39,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 07:54:40,020 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 07:54:40,022 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 07:54:45,187 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-08 07:54:45,348 INFO L? ?]: Removed 2432 outVars from TransFormulas that were not future-live. [2025-02-08 07:54:45,350 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 07:54:45,399 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 07:54:45,399 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 07:54:45,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:54:45 BoogieIcfgContainer [2025-02-08 07:54:45,399 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 07:54:45,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 07:54:45,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 07:54:45,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 07:54:45,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 07:54:38" (1/3) ... [2025-02-08 07:54:45,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c98cee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:54:45, skipping insertion in model container [2025-02-08 07:54:45,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:39" (2/3) ... [2025-02-08 07:54:45,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c98cee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:54:45, skipping insertion in model container [2025-02-08 07:54:45,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:54:45" (3/3) ... [2025-02-08 07:54:45,409 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-3.i [2025-02-08 07:54:45,419 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 07:54:45,421 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test10-3.i that has 6 procedures, 2491 locations, 1 initial locations, 93 loop locations, and 1189 error locations. [2025-02-08 07:54:45,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 07:54:45,507 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;@355bc38f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 07:54:45,508 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1189 error locations. [2025-02-08 07:54:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 2481 states, 1279 states have (on average 2.1688819390148555) internal successors, (2774), 2466 states have internal predecessors, (2774), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-02-08 07:54:45,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-02-08 07:54:45,522 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:45,523 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-02-08 07:54:45,524 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1186REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:54:45,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 90655, now seen corresponding path program 1 times [2025-02-08 07:54:45,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:45,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295306876] [2025-02-08 07:54:45,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:45,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:45,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:45,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:54:45,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 07:54:45,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 07:54:45,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 07:54:45,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:45,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:45,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:54:45,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:45,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:54:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:45,783 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:45,783 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:45,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295306876] [2025-02-08 07:54:45,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295306876] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:45,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:45,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:54:45,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172179009] [2025-02-08 07:54:45,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:45,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:54:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:45,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:54:45,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:45,814 INFO L87 Difference]: Start difference. First operand has 2481 states, 1279 states have (on average 2.1688819390148555) internal successors, (2774), 2466 states have internal predecessors, (2774), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:54:48,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:48,991 INFO L93 Difference]: Finished difference Result 3325 states and 3524 transitions. [2025-02-08 07:54:48,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:54:48,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2025-02-08 07:54:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:49,015 INFO L225 Difference]: With dead ends: 3325 [2025-02-08 07:54:49,016 INFO L226 Difference]: Without dead ends: 3320 [2025-02-08 07:54:49,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:49,018 INFO L435 NwaCegarLoop]: 1702 mSDtfsCounter, 2346 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:49,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2356 Valid, 2280 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-02-08 07:54:49,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2025-02-08 07:54:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 2625. [2025-02-08 07:54:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2625 states, 1453 states have (on average 2.0192704748795594) internal successors, (2934), 2609 states have internal predecessors, (2934), 16 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 07:54:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2625 states to 2625 states and 2962 transitions. [2025-02-08 07:54:49,154 INFO L78 Accepts]: Start accepts. Automaton has 2625 states and 2962 transitions. Word has length 2 [2025-02-08 07:54:49,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:49,154 INFO L471 AbstractCegarLoop]: Abstraction has 2625 states and 2962 transitions. [2025-02-08 07:54:49,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:54:49,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2625 states and 2962 transitions. [2025-02-08 07:54:49,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-02-08 07:54:49,155 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:49,155 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-02-08 07:54:49,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 07:54:49,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:49,356 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1187REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:54:49,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash 90656, now seen corresponding path program 1 times [2025-02-08 07:54:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:49,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614807859] [2025-02-08 07:54:49,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:49,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:49,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:49,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:54:49,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 07:54:49,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 07:54:49,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 07:54:49,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:49,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:49,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:54:49,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:49,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:54:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:49,549 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:49,549 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:49,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614807859] [2025-02-08 07:54:49,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614807859] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:49,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:49,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:54:49,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169556229] [2025-02-08 07:54:49,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:49,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:54:49,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:49,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:54:49,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:49,551 INFO L87 Difference]: Start difference. First operand 2625 states and 2962 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:54:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:53,084 INFO L93 Difference]: Finished difference Result 3439 states and 3856 transitions. [2025-02-08 07:54:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:54:53,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2025-02-08 07:54:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:53,093 INFO L225 Difference]: With dead ends: 3439 [2025-02-08 07:54:53,094 INFO L226 Difference]: Without dead ends: 3439 [2025-02-08 07:54:53,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:53,095 INFO L435 NwaCegarLoop]: 2244 mSDtfsCounter, 888 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:53,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 3666 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-02-08 07:54:53,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2025-02-08 07:54:53,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 3111. [2025-02-08 07:54:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 1937 states have (on average 1.9731543624161074) internal successors, (3822), 3092 states have internal predecessors, (3822), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:54:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 3856 transitions. [2025-02-08 07:54:53,153 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 3856 transitions. Word has length 2 [2025-02-08 07:54:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:53,154 INFO L471 AbstractCegarLoop]: Abstraction has 3111 states and 3856 transitions. [2025-02-08 07:54:53,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:54:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 3856 transitions. [2025-02-08 07:54:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 07:54:53,154 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:53,154 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:54:53,161 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 [2025-02-08 07:54:53,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:53,355 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1183REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:54:53,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash -438107411, now seen corresponding path program 1 times [2025-02-08 07:54:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:53,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011480786] [2025-02-08 07:54:53,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:53,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:53,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:53,358 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:54:53,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 07:54:53,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 07:54:53,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 07:54:53,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:53,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:53,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:54:53,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:53,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:54:53,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 07:54:53,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 07:54:53,672 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:54:53,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 07:54:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:53,685 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:53,686 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:53,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011480786] [2025-02-08 07:54:53,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011480786] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:53,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:53,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:54:53,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799257632] [2025-02-08 07:54:53,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:53,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:54:53,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:53,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:54:53,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:54:53,688 INFO L87 Difference]: Start difference. First operand 3111 states and 3856 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2025-02-08 07:54:59,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:59,625 INFO L93 Difference]: Finished difference Result 5400 states and 6295 transitions. [2025-02-08 07:54:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:54:59,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2025-02-08 07:54:59,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:59,637 INFO L225 Difference]: With dead ends: 5400 [2025-02-08 07:54:59,637 INFO L226 Difference]: Without dead ends: 5400 [2025-02-08 07:54:59,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:54:59,638 INFO L435 NwaCegarLoop]: 1199 mSDtfsCounter, 4373 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4382 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:59,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4382 Valid, 2745 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2025-02-08 07:54:59,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5400 states. [2025-02-08 07:54:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5400 to 3842. [2025-02-08 07:54:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3842 states, 2668 states have (on average 2.0011244377811095) internal successors, (5339), 3817 states have internal predecessors, (5339), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:54:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3842 states to 3842 states and 5385 transitions. [2025-02-08 07:54:59,691 INFO L78 Accepts]: Start accepts. Automaton has 3842 states and 5385 transitions. Word has length 7 [2025-02-08 07:54:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:59,691 INFO L471 AbstractCegarLoop]: Abstraction has 3842 states and 5385 transitions. [2025-02-08 07:54:59,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2025-02-08 07:54:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3842 states and 5385 transitions. [2025-02-08 07:54:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 07:54:59,692 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:59,692 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:54:59,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 07:54:59,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:59,892 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1180REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:54:59,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:59,894 INFO L85 PathProgramCache]: Analyzing trace with hash -696425131, now seen corresponding path program 1 times [2025-02-08 07:54:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:59,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671066592] [2025-02-08 07:54:59,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:59,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:59,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:59,900 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:54:59,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 07:55:00,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 07:55:00,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 07:55:00,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:00,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:00,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:00,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:00,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:55:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:00,061 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:00,061 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671066592] [2025-02-08 07:55:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671066592] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:00,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:00,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:55:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108619378] [2025-02-08 07:55:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:00,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:55:00,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:00,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:55:00,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:55:00,062 INFO L87 Difference]: Start difference. First operand 3842 states and 5385 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:02,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:02,468 INFO L93 Difference]: Finished difference Result 4567 states and 6068 transitions. [2025-02-08 07:55:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:55:02,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 07:55:02,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:02,479 INFO L225 Difference]: With dead ends: 4567 [2025-02-08 07:55:02,480 INFO L226 Difference]: Without dead ends: 4567 [2025-02-08 07:55:02,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:55:02,480 INFO L435 NwaCegarLoop]: 2443 mSDtfsCounter, 1941 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:02,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 3223 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-08 07:55:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2025-02-08 07:55:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 3750. [2025-02-08 07:55:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3750 states, 2668 states have (on average 1.9205397301349325) internal successors, (5124), 3725 states have internal predecessors, (5124), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:55:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 5170 transitions. [2025-02-08 07:55:02,531 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 5170 transitions. Word has length 8 [2025-02-08 07:55:02,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:02,532 INFO L471 AbstractCegarLoop]: Abstraction has 3750 states and 5170 transitions. [2025-02-08 07:55:02,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 5170 transitions. [2025-02-08 07:55:02,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 07:55:02,532 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:02,532 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:02,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 07:55:02,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:02,733 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1181REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:55:02,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash -696425130, now seen corresponding path program 1 times [2025-02-08 07:55:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:02,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806070685] [2025-02-08 07:55:02,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:02,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:02,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:02,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:02,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 07:55:02,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 07:55:02,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 07:55:02,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:02,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:02,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:55:02,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:02,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:55:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:02,919 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:02,919 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:02,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806070685] [2025-02-08 07:55:02,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806070685] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:02,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:02,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:55:02,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095403187] [2025-02-08 07:55:02,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:02,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:55:02,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:02,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:55:02,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:55:02,920 INFO L87 Difference]: Start difference. First operand 3750 states and 5170 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:06,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:06,693 INFO L93 Difference]: Finished difference Result 5591 states and 7666 transitions. [2025-02-08 07:55:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:55:06,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 07:55:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:06,706 INFO L225 Difference]: With dead ends: 5591 [2025-02-08 07:55:06,706 INFO L226 Difference]: Without dead ends: 5591 [2025-02-08 07:55:06,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:55:06,707 INFO L435 NwaCegarLoop]: 2802 mSDtfsCounter, 1442 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 4023 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:06,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 4023 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-02-08 07:55:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5591 states. [2025-02-08 07:55:06,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5591 to 4104. [2025-02-08 07:55:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4104 states, 3032 states have (on average 1.904353562005277) internal successors, (5774), 4079 states have internal predecessors, (5774), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:55:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 5820 transitions. [2025-02-08 07:55:06,763 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 5820 transitions. Word has length 8 [2025-02-08 07:55:06,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:06,765 INFO L471 AbstractCegarLoop]: Abstraction has 4104 states and 5820 transitions. [2025-02-08 07:55:06,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:06,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 5820 transitions. [2025-02-08 07:55:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 07:55:06,766 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:06,766 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:06,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 07:55:06,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:06,970 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr548REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:55:06,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:06,970 INFO L85 PathProgramCache]: Analyzing trace with hash 93472136, now seen corresponding path program 1 times [2025-02-08 07:55:06,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:06,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307069178] [2025-02-08 07:55:06,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:06,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:06,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:06,974 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:06,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 07:55:07,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 07:55:07,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 07:55:07,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:07,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:07,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:07,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:07,168 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:07,168 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:07,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307069178] [2025-02-08 07:55:07,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307069178] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:07,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:07,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:55:07,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947145227] [2025-02-08 07:55:07,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:07,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:07,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:07,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:07,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:07,170 INFO L87 Difference]: Start difference. First operand 4104 states and 5820 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:10,218 INFO L93 Difference]: Finished difference Result 4747 states and 6321 transitions. [2025-02-08 07:55:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2025-02-08 07:55:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:10,229 INFO L225 Difference]: With dead ends: 4747 [2025-02-08 07:55:10,229 INFO L226 Difference]: Without dead ends: 4747 [2025-02-08 07:55:10,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:55:10,230 INFO L435 NwaCegarLoop]: 1645 mSDtfsCounter, 2307 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 3619 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:10,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 3619 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-02-08 07:55:10,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2025-02-08 07:55:10,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 4081. [2025-02-08 07:55:10,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4081 states, 3032 states have (on average 1.8891820580474934) internal successors, (5728), 4056 states have internal predecessors, (5728), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:55:10,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 5774 transitions. [2025-02-08 07:55:10,320 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 5774 transitions. Word has length 11 [2025-02-08 07:55:10,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:10,320 INFO L471 AbstractCegarLoop]: Abstraction has 4081 states and 5774 transitions. [2025-02-08 07:55:10,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:10,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 5774 transitions. [2025-02-08 07:55:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 07:55:10,320 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:10,320 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:10,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 07:55:10,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:10,521 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr549REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:55:10,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 93472137, now seen corresponding path program 1 times [2025-02-08 07:55:10,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:10,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594959729] [2025-02-08 07:55:10,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:10,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:10,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:10,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:10,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 07:55:10,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 07:55:10,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 07:55:10,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:10,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:10,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:55:10,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:10,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:55:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:10,743 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:10,743 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594959729] [2025-02-08 07:55:10,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594959729] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:10,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:10,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:55:10,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886322429] [2025-02-08 07:55:10,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:10,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:10,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:10,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:10,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:10,744 INFO L87 Difference]: Start difference. First operand 4081 states and 5774 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:15,259 INFO L93 Difference]: Finished difference Result 4843 states and 6608 transitions. [2025-02-08 07:55:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:15,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2025-02-08 07:55:15,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:15,272 INFO L225 Difference]: With dead ends: 4843 [2025-02-08 07:55:15,272 INFO L226 Difference]: Without dead ends: 4843 [2025-02-08 07:55:15,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:55:15,273 INFO L435 NwaCegarLoop]: 2149 mSDtfsCounter, 867 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 4760 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:15,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 4760 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-02-08 07:55:15,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2025-02-08 07:55:15,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 4130. [2025-02-08 07:55:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3081 states have (on average 1.8792599805258032) internal successors, (5790), 4105 states have internal predecessors, (5790), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:55:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5836 transitions. [2025-02-08 07:55:15,356 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5836 transitions. Word has length 11 [2025-02-08 07:55:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:15,357 INFO L471 AbstractCegarLoop]: Abstraction has 4130 states and 5836 transitions. [2025-02-08 07:55:15,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5836 transitions. [2025-02-08 07:55:15,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 07:55:15,357 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:15,357 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:15,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 07:55:15,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:15,559 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:55:15,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:15,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1397374319, now seen corresponding path program 1 times [2025-02-08 07:55:15,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:15,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120181982] [2025-02-08 07:55:15,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:15,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:15,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:15,562 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:15,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 07:55:15,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 07:55:15,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 07:55:15,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:15,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:15,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:15,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:15,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:15,717 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:15,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120181982] [2025-02-08 07:55:15,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120181982] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:15,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:15,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:55:15,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33940852] [2025-02-08 07:55:15,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:15,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:15,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:15,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:15,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:15,718 INFO L87 Difference]: Start difference. First operand 4130 states and 5836 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:15,798 INFO L93 Difference]: Finished difference Result 4052 states and 5715 transitions. [2025-02-08 07:55:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:55:15,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2025-02-08 07:55:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:15,807 INFO L225 Difference]: With dead ends: 4052 [2025-02-08 07:55:15,807 INFO L226 Difference]: Without dead ends: 4052 [2025-02-08 07:55:15,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:55:15,808 INFO L435 NwaCegarLoop]: 2388 mSDtfsCounter, 45 mSDsluCounter, 4753 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7141 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:15,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7141 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:55:15,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2025-02-08 07:55:15,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 4046. [2025-02-08 07:55:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4046 states, 3016 states have (on average 1.8776525198938991) internal successors, (5663), 4021 states have internal predecessors, (5663), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:55:15,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4046 states to 4046 states and 5709 transitions. [2025-02-08 07:55:15,850 INFO L78 Accepts]: Start accepts. Automaton has 4046 states and 5709 transitions. Word has length 12 [2025-02-08 07:55:15,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:15,850 INFO L471 AbstractCegarLoop]: Abstraction has 4046 states and 5709 transitions. [2025-02-08 07:55:15,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:15,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4046 states and 5709 transitions. [2025-02-08 07:55:15,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:55:15,851 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:15,851 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] [2025-02-08 07:55:15,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 07:55:16,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:16,052 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr862REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:55:16,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash -728999974, now seen corresponding path program 1 times [2025-02-08 07:55:16,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:16,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970623835] [2025-02-08 07:55:16,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:16,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:16,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:16,054 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:16,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 07:55:16,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:55:16,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:55:16,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:16,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:16,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:16,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:16,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:16,270 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:16,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970623835] [2025-02-08 07:55:16,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970623835] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:16,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:16,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:55:16,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952006574] [2025-02-08 07:55:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:16,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:16,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:16,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:16,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:16,272 INFO L87 Difference]: Start difference. First operand 4046 states and 5709 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:19,501 INFO L93 Difference]: Finished difference Result 4756 states and 6372 transitions. [2025-02-08 07:55:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:19,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:55:19,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:19,515 INFO L225 Difference]: With dead ends: 4756 [2025-02-08 07:55:19,516 INFO L226 Difference]: Without dead ends: 4756 [2025-02-08 07:55:19,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:55:19,516 INFO L435 NwaCegarLoop]: 2293 mSDtfsCounter, 1905 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:19,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 4747 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-02-08 07:55:19,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2025-02-08 07:55:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 4023. [2025-02-08 07:55:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4023 states, 3016 states have (on average 1.831896551724138) internal successors, (5525), 3998 states have internal predecessors, (5525), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:55:19,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4023 states to 4023 states and 5571 transitions. [2025-02-08 07:55:19,562 INFO L78 Accepts]: Start accepts. Automaton has 4023 states and 5571 transitions. Word has length 20 [2025-02-08 07:55:19,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:19,562 INFO L471 AbstractCegarLoop]: Abstraction has 4023 states and 5571 transitions. [2025-02-08 07:55:19,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:19,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4023 states and 5571 transitions. [2025-02-08 07:55:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:55:19,564 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:19,564 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] [2025-02-08 07:55:19,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 07:55:19,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:19,768 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:55:19,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:19,771 INFO L85 PathProgramCache]: Analyzing trace with hash -728999973, now seen corresponding path program 1 times [2025-02-08 07:55:19,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:19,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135528362] [2025-02-08 07:55:19,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:19,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:19,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:19,779 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:19,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 07:55:19,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:55:19,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:55:19,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:19,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:20,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:55:20,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:20,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:55:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:20,092 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:20,092 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:20,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135528362] [2025-02-08 07:55:20,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135528362] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:20,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:20,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:55:20,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383767725] [2025-02-08 07:55:20,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:20,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:20,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:20,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:20,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:20,093 INFO L87 Difference]: Start difference. First operand 4023 states and 5571 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:25,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:25,175 INFO L93 Difference]: Finished difference Result 5523 states and 7419 transitions. [2025-02-08 07:55:25,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:25,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:55:25,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:25,188 INFO L225 Difference]: With dead ends: 5523 [2025-02-08 07:55:25,189 INFO L226 Difference]: Without dead ends: 5523 [2025-02-08 07:55:25,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:55:25,189 INFO L435 NwaCegarLoop]: 2641 mSDtfsCounter, 1477 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 3035 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 5572 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:25,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 5572 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3035 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2025-02-08 07:55:25,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2025-02-08 07:55:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 4137. [2025-02-08 07:55:25,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 3130 states have (on average 1.8092651757188498) internal successors, (5663), 4112 states have internal predecessors, (5663), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:55:25,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 5709 transitions. [2025-02-08 07:55:25,244 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 5709 transitions. Word has length 20 [2025-02-08 07:55:25,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:25,245 INFO L471 AbstractCegarLoop]: Abstraction has 4137 states and 5709 transitions. [2025-02-08 07:55:25,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:25,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 5709 transitions. [2025-02-08 07:55:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:55:25,246 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:25,246 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] [2025-02-08 07:55:25,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 07:55:25,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:25,447 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1170REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:55:25,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash -137330875, now seen corresponding path program 1 times [2025-02-08 07:55:25,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:25,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889590572] [2025-02-08 07:55:25,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:25,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:25,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:25,449 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:25,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 07:55:25,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:55:25,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:55:25,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:25,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:25,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:55:25,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:25,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:55:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:25,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:25,653 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:25,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889590572] [2025-02-08 07:55:25,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889590572] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:25,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:25,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:55:25,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332012315] [2025-02-08 07:55:25,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:25,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:25,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:25,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:25,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:25,654 INFO L87 Difference]: Start difference. First operand 4137 states and 5709 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:28,664 INFO L93 Difference]: Finished difference Result 4831 states and 6448 transitions. [2025-02-08 07:55:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:28,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:55:28,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:28,673 INFO L225 Difference]: With dead ends: 4831 [2025-02-08 07:55:28,674 INFO L226 Difference]: Without dead ends: 4831 [2025-02-08 07:55:28,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:55:28,674 INFO L435 NwaCegarLoop]: 2293 mSDtfsCounter, 1880 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 2870 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:28,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 4747 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2870 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-02-08 07:55:28,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4831 states. [2025-02-08 07:55:28,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4831 to 4114. [2025-02-08 07:55:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4114 states, 3130 states have (on average 1.7945686900958466) internal successors, (5617), 4089 states have internal predecessors, (5617), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:55:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 5663 transitions. [2025-02-08 07:55:28,711 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 5663 transitions. Word has length 20 [2025-02-08 07:55:28,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:28,711 INFO L471 AbstractCegarLoop]: Abstraction has 4114 states and 5663 transitions. [2025-02-08 07:55:28,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 5663 transitions. [2025-02-08 07:55:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:55:28,711 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:28,712 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] [2025-02-08 07:55:28,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 07:55:28,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:28,913 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:55:28,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash -137330874, now seen corresponding path program 1 times [2025-02-08 07:55:28,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:28,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567593308] [2025-02-08 07:55:28,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:28,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:28,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:28,916 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:28,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 07:55:29,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:55:29,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:55:29,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:29,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:29,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:55:29,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:29,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:55:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:29,178 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:29,178 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:29,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567593308] [2025-02-08 07:55:29,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567593308] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:29,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:29,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:55:29,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555048784] [2025-02-08 07:55:29,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:29,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:29,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:29,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:29,179 INFO L87 Difference]: Start difference. First operand 4114 states and 5663 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:33,688 INFO L93 Difference]: Finished difference Result 5614 states and 7511 transitions. [2025-02-08 07:55:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:33,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:55:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:33,695 INFO L225 Difference]: With dead ends: 5614 [2025-02-08 07:55:33,695 INFO L226 Difference]: Without dead ends: 5614 [2025-02-08 07:55:33,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:55:33,696 INFO L435 NwaCegarLoop]: 2625 mSDtfsCounter, 1454 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 5533 SdHoareTripleChecker+Invalid, 3063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:33,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 5533 Invalid, 3063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3041 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-02-08 07:55:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2025-02-08 07:55:33,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 4228. [2025-02-08 07:55:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4228 states, 3244 states have (on average 1.7740443896424167) internal successors, (5755), 4203 states have internal predecessors, (5755), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:55:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4228 states to 4228 states and 5801 transitions. [2025-02-08 07:55:33,738 INFO L78 Accepts]: Start accepts. Automaton has 4228 states and 5801 transitions. Word has length 20 [2025-02-08 07:55:33,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:33,739 INFO L471 AbstractCegarLoop]: Abstraction has 4228 states and 5801 transitions. [2025-02-08 07:55:33,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4228 states and 5801 transitions. [2025-02-08 07:55:33,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-08 07:55:33,740 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:33,740 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:33,750 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 [2025-02-08 07:55:33,940 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 [2025-02-08 07:55:33,941 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:55:33,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:33,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1323677898, now seen corresponding path program 1 times [2025-02-08 07:55:33,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:33,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465546629] [2025-02-08 07:55:33,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:33,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:33,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:33,944 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) [2025-02-08 07:55:33,952 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 [2025-02-08 07:55:34,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 07:55:34,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 07:55:34,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:34,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:34,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:55:34,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:34,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:55:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:34,308 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:55:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:34,692 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:34,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465546629] [2025-02-08 07:55:34,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465546629] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:55:34,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:55:34,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 07:55:34,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776344409] [2025-02-08 07:55:34,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:55:34,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:55:34,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:34,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:55:34,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:55:34,693 INFO L87 Difference]: Start difference. First operand 4228 states and 5801 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:46,670 INFO L93 Difference]: Finished difference Result 6022 states and 8081 transitions. [2025-02-08 07:55:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 07:55:46,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 39 [2025-02-08 07:55:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:46,676 INFO L225 Difference]: With dead ends: 6022 [2025-02-08 07:55:46,677 INFO L226 Difference]: Without dead ends: 6022 [2025-02-08 07:55:46,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-08 07:55:46,678 INFO L435 NwaCegarLoop]: 2626 mSDtfsCounter, 3762 mSDsluCounter, 6465 mSDsCounter, 0 mSdLazyCounter, 6040 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3768 SdHoareTripleChecker+Valid, 9091 SdHoareTripleChecker+Invalid, 6073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 6040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:46,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3768 Valid, 9091 Invalid, 6073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 6040 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2025-02-08 07:55:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6022 states. [2025-02-08 07:55:46,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6022 to 4392. [2025-02-08 07:55:46,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 3408 states have (on average 1.7567488262910798) internal successors, (5987), 4367 states have internal predecessors, (5987), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:55:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 6033 transitions. [2025-02-08 07:55:46,735 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 6033 transitions. Word has length 39 [2025-02-08 07:55:46,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:46,736 INFO L471 AbstractCegarLoop]: Abstraction has 4392 states and 6033 transitions. [2025-02-08 07:55:46,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 6033 transitions. [2025-02-08 07:55:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-08 07:55:46,738 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:46,738 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:46,749 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 [2025-02-08 07:55:46,943 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 [2025-02-08 07:55:46,943 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:55:46,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1518953783, now seen corresponding path program 1 times [2025-02-08 07:55:46,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:46,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765672673] [2025-02-08 07:55:46,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:46,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:46,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:46,947 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:46,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 07:55:47,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 07:55:47,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 07:55:47,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:47,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:47,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:55:47,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:47,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:55:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:47,307 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:55:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:47,663 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:47,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765672673] [2025-02-08 07:55:47,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765672673] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:55:47,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:55:47,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 07:55:47,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335598917] [2025-02-08 07:55:47,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:55:47,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:55:47,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:47,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:55:47,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:55:47,663 INFO L87 Difference]: Start difference. First operand 4392 states and 6033 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:00,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:56:00,197 INFO L93 Difference]: Finished difference Result 6186 states and 8313 transitions. [2025-02-08 07:56:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 07:56:00,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 39 [2025-02-08 07:56:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:56:00,207 INFO L225 Difference]: With dead ends: 6186 [2025-02-08 07:56:00,210 INFO L226 Difference]: Without dead ends: 6186 [2025-02-08 07:56:00,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-08 07:56:00,211 INFO L435 NwaCegarLoop]: 2626 mSDtfsCounter, 2132 mSDsluCounter, 5891 mSDsCounter, 0 mSdLazyCounter, 5631 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 8517 SdHoareTripleChecker+Invalid, 5659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:56:00,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2138 Valid, 8517 Invalid, 5659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5631 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2025-02-08 07:56:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2025-02-08 07:56:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 4556. [2025-02-08 07:56:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4556 states, 3572 states have (on average 1.7410414333706608) internal successors, (6219), 4531 states have internal predecessors, (6219), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 07:56:00,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 6265 transitions. [2025-02-08 07:56:00,301 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 6265 transitions. Word has length 39 [2025-02-08 07:56:00,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:56:00,301 INFO L471 AbstractCegarLoop]: Abstraction has 4556 states and 6265 transitions. [2025-02-08 07:56:00,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 6265 transitions. [2025-02-08 07:56:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-08 07:56:00,301 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:56:00,302 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] [2025-02-08 07:56:00,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 07:56:00,505 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 [2025-02-08 07:56:00,506 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr502REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:56:00,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:56:00,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1020843701, now seen corresponding path program 1 times [2025-02-08 07:56:00,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:56:00,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928092445] [2025-02-08 07:56:00,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:56:00,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:00,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:56:00,512 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) [2025-02-08 07:56:00,520 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 [2025-02-08 07:56:00,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 07:56:00,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 07:56:00,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:56:00,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:56:00,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:56:00,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:56:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:56:00,806 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:56:00,806 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:56:00,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928092445] [2025-02-08 07:56:00,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928092445] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:56:00,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:56:00,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:56:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097251688] [2025-02-08 07:56:00,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:56:00,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:56:00,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:56:00,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:56:00,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:56:00,807 INFO L87 Difference]: Start difference. First operand 4556 states and 6265 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:01,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:56:01,024 INFO L93 Difference]: Finished difference Result 6789 states and 9025 transitions. [2025-02-08 07:56:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:56:01,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2025-02-08 07:56:01,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:56:01,031 INFO L225 Difference]: With dead ends: 6789 [2025-02-08 07:56:01,031 INFO L226 Difference]: Without dead ends: 6789 [2025-02-08 07:56:01,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:56:01,033 INFO L435 NwaCegarLoop]: 2432 mSDtfsCounter, 1638 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 4693 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:56:01,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 4693 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 07:56:01,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6789 states. [2025-02-08 07:56:01,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6789 to 5962. [2025-02-08 07:56:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5962 states, 4971 states have (on average 1.7233956950311808) internal successors, (8567), 5927 states have internal predecessors, (8567), 35 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2025-02-08 07:56:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5962 states to 5962 states and 8633 transitions. [2025-02-08 07:56:01,079 INFO L78 Accepts]: Start accepts. Automaton has 5962 states and 8633 transitions. Word has length 41 [2025-02-08 07:56:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:56:01,080 INFO L471 AbstractCegarLoop]: Abstraction has 5962 states and 8633 transitions. [2025-02-08 07:56:01,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5962 states and 8633 transitions. [2025-02-08 07:56:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-08 07:56:01,081 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:56:01,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:56:01,089 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 [2025-02-08 07:56:01,285 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 [2025-02-08 07:56:01,285 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:56:01,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:56:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash -19258935, now seen corresponding path program 1 times [2025-02-08 07:56:01,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:56:01,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974845222] [2025-02-08 07:56:01,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:56:01,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:01,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:56:01,292 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:56:01,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 07:56:01,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-08 07:56:01,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 07:56:01,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:56:01,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:56:01,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:56:01,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:56:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:56:01,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:56:01,501 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:56:01,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974845222] [2025-02-08 07:56:01,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974845222] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:56:01,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:56:01,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:56:01,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063971495] [2025-02-08 07:56:01,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:56:01,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:56:01,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:56:01,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:56:01,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:56:01,503 INFO L87 Difference]: Start difference. First operand 5962 states and 8633 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:01,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:56:01,573 INFO L93 Difference]: Finished difference Result 5944 states and 8599 transitions. [2025-02-08 07:56:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:56:01,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-02-08 07:56:01,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:56:01,583 INFO L225 Difference]: With dead ends: 5944 [2025-02-08 07:56:01,586 INFO L226 Difference]: Without dead ends: 5944 [2025-02-08 07:56:01,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:56:01,587 INFO L435 NwaCegarLoop]: 2344 mSDtfsCounter, 27 mSDsluCounter, 4651 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6995 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:56:01,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6995 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:56:01,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2025-02-08 07:56:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5944. [2025-02-08 07:56:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 4953 states have (on average 1.7227942661013527) internal successors, (8533), 5909 states have internal predecessors, (8533), 35 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2025-02-08 07:56:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 8599 transitions. [2025-02-08 07:56:01,639 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 8599 transitions. Word has length 51 [2025-02-08 07:56:01,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:56:01,639 INFO L471 AbstractCegarLoop]: Abstraction has 5944 states and 8599 transitions. [2025-02-08 07:56:01,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 8599 transitions. [2025-02-08 07:56:01,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-08 07:56:01,640 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:56:01,640 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] [2025-02-08 07:56:01,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 07:56:01,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:01,841 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr810REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:56:01,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:56:01,842 INFO L85 PathProgramCache]: Analyzing trace with hash 106842498, now seen corresponding path program 1 times [2025-02-08 07:56:01,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:56:01,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178982257] [2025-02-08 07:56:01,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:56:01,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:01,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:56:01,845 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:56:01,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 07:56:01,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-08 07:56:02,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-08 07:56:02,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:56:02,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:56:02,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:56:02,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:56:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:56:02,246 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:56:02,247 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:56:02,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178982257] [2025-02-08 07:56:02,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178982257] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:56:02,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:56:02,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:56:02,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104482518] [2025-02-08 07:56:02,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:56:02,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:56:02,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:56:02,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:56:02,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:56:02,249 INFO L87 Difference]: Start difference. First operand 5944 states and 8599 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:02,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:56:02,360 INFO L93 Difference]: Finished difference Result 8361 states and 11686 transitions. [2025-02-08 07:56:02,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:56:02,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 52 [2025-02-08 07:56:02,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:56:02,367 INFO L225 Difference]: With dead ends: 8361 [2025-02-08 07:56:02,368 INFO L226 Difference]: Without dead ends: 8361 [2025-02-08 07:56:02,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:56:02,368 INFO L435 NwaCegarLoop]: 2361 mSDtfsCounter, 1523 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:56:02,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 4657 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:56:02,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8361 states. [2025-02-08 07:56:02,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8361 to 7541. [2025-02-08 07:56:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7541 states, 6541 states have (on average 1.7070784283748661) internal successors, (11166), 7494 states have internal predecessors, (11166), 47 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2025-02-08 07:56:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7541 states to 7541 states and 11256 transitions. [2025-02-08 07:56:02,445 INFO L78 Accepts]: Start accepts. Automaton has 7541 states and 11256 transitions. Word has length 52 [2025-02-08 07:56:02,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:56:02,445 INFO L471 AbstractCegarLoop]: Abstraction has 7541 states and 11256 transitions. [2025-02-08 07:56:02,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:02,445 INFO L276 IsEmpty]: Start isEmpty. Operand 7541 states and 11256 transitions. [2025-02-08 07:56:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 07:56:02,446 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:56:02,446 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] [2025-02-08 07:56:02,455 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 [2025-02-08 07:56:02,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:02,647 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr781REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:56:02,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:56:02,647 INFO L85 PathProgramCache]: Analyzing trace with hash 373637637, now seen corresponding path program 1 times [2025-02-08 07:56:02,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:56:02,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332296698] [2025-02-08 07:56:02,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:56:02,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:02,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:56:02,650 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:56:02,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 07:56:02,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 07:56:02,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 07:56:02,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:56:02,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:56:02,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:56:02,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:56:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:56:02,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:56:02,918 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:56:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332296698] [2025-02-08 07:56:02,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332296698] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:56:02,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:56:02,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:56:02,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370296992] [2025-02-08 07:56:02,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:56:02,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:56:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:56:02,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:56:02,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:56:02,920 INFO L87 Difference]: Start difference. First operand 7541 states and 11256 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:56:02,997 INFO L93 Difference]: Finished difference Result 6923 states and 10252 transitions. [2025-02-08 07:56:02,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:56:02,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2025-02-08 07:56:02,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:56:03,004 INFO L225 Difference]: With dead ends: 6923 [2025-02-08 07:56:03,004 INFO L226 Difference]: Without dead ends: 6923 [2025-02-08 07:56:03,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:56:03,005 INFO L435 NwaCegarLoop]: 2309 mSDtfsCounter, 76 mSDsluCounter, 4525 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6834 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:56:03,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6834 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:56:03,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6923 states. [2025-02-08 07:56:03,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6923 to 6913. [2025-02-08 07:56:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6913 states, 5925 states have (on average 1.7134177215189874) internal successors, (10152), 6866 states have internal predecessors, (10152), 47 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2025-02-08 07:56:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6913 states to 6913 states and 10242 transitions. [2025-02-08 07:56:03,058 INFO L78 Accepts]: Start accepts. Automaton has 6913 states and 10242 transitions. Word has length 55 [2025-02-08 07:56:03,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:56:03,058 INFO L471 AbstractCegarLoop]: Abstraction has 6913 states and 10242 transitions. [2025-02-08 07:56:03,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6913 states and 10242 transitions. [2025-02-08 07:56:03,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 07:56:03,058 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:56:03,059 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] [2025-02-08 07:56:03,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 07:56:03,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:03,263 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:56:03,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:56:03,264 INFO L85 PathProgramCache]: Analyzing trace with hash -975302652, now seen corresponding path program 1 times [2025-02-08 07:56:03,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:56:03,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711339837] [2025-02-08 07:56:03,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:56:03,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:03,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:56:03,266 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:56:03,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 07:56:03,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 07:56:03,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 07:56:03,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:56:03,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:56:03,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:56:03,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:56:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:56:03,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:56:03,543 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:56:03,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711339837] [2025-02-08 07:56:03,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711339837] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:56:03,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:56:03,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:56:03,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175408630] [2025-02-08 07:56:03,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:56:03,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:56:03,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:56:03,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:56:03,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:56:03,544 INFO L87 Difference]: Start difference. First operand 6913 states and 10242 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:56:03,620 INFO L93 Difference]: Finished difference Result 6314 states and 9370 transitions. [2025-02-08 07:56:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:56:03,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2025-02-08 07:56:03,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:56:03,627 INFO L225 Difference]: With dead ends: 6314 [2025-02-08 07:56:03,628 INFO L226 Difference]: Without dead ends: 6314 [2025-02-08 07:56:03,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:56:03,628 INFO L435 NwaCegarLoop]: 2263 mSDtfsCounter, 56 mSDsluCounter, 4453 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6716 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:56:03,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6716 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:56:03,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6314 states. [2025-02-08 07:56:03,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6314 to 6310. [2025-02-08 07:56:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6310 states, 5345 states have (on average 1.7354536950420953) internal successors, (9276), 6263 states have internal predecessors, (9276), 47 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2025-02-08 07:56:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6310 states to 6310 states and 9366 transitions. [2025-02-08 07:56:03,682 INFO L78 Accepts]: Start accepts. Automaton has 6310 states and 9366 transitions. Word has length 55 [2025-02-08 07:56:03,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:56:03,682 INFO L471 AbstractCegarLoop]: Abstraction has 6310 states and 9366 transitions. [2025-02-08 07:56:03,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:03,682 INFO L276 IsEmpty]: Start isEmpty. Operand 6310 states and 9366 transitions. [2025-02-08 07:56:03,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 07:56:03,682 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:56:03,682 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] [2025-02-08 07:56:03,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-08 07:56:03,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:03,883 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:56:03,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:56:03,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1789284865, now seen corresponding path program 1 times [2025-02-08 07:56:03,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:56:03,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114769934] [2025-02-08 07:56:03,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:56:03,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:03,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:56:03,886 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:56:03,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 07:56:04,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 07:56:04,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 07:56:04,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:56:04,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:56:04,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:56:04,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:56:04,086 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:56:04,087 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:56:04,088 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:56:04,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-02-08 07:56:04,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 07:56:04,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-02-08 07:56:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:56:04,131 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:56:04,131 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:56:04,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114769934] [2025-02-08 07:56:04,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114769934] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:56:04,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:56:04,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:56:04,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639860521] [2025-02-08 07:56:04,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:56:04,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:56:04,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:56:04,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:56:04,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:56:04,132 INFO L87 Difference]: Start difference. First operand 6310 states and 9366 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:56:04,634 INFO L93 Difference]: Finished difference Result 7168 states and 10380 transitions. [2025-02-08 07:56:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:56:04,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-02-08 07:56:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:56:04,643 INFO L225 Difference]: With dead ends: 7168 [2025-02-08 07:56:04,643 INFO L226 Difference]: Without dead ends: 7168 [2025-02-08 07:56:04,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:56:04,644 INFO L435 NwaCegarLoop]: 2484 mSDtfsCounter, 923 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 7119 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 07:56:04,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 7119 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 07:56:04,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7168 states. [2025-02-08 07:56:04,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7168 to 6189. [2025-02-08 07:56:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6189 states, 5225 states have (on average 1.7410526315789474) internal successors, (9097), 6143 states have internal predecessors, (9097), 46 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2025-02-08 07:56:04,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6189 states to 6189 states and 9185 transitions. [2025-02-08 07:56:04,700 INFO L78 Accepts]: Start accepts. Automaton has 6189 states and 9185 transitions. Word has length 59 [2025-02-08 07:56:04,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:56:04,700 INFO L471 AbstractCegarLoop]: Abstraction has 6189 states and 9185 transitions. [2025-02-08 07:56:04,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:56:04,700 INFO L276 IsEmpty]: Start isEmpty. Operand 6189 states and 9185 transitions. [2025-02-08 07:56:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-08 07:56:04,700 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:56:04,701 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] [2025-02-08 07:56:04,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 07:56:04,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:04,905 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr781REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:56:04,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:56:04,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1893263795, now seen corresponding path program 1 times [2025-02-08 07:56:04,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:56:04,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455878474] [2025-02-08 07:56:04,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:56:04,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:04,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:56:04,908 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:56:04,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 07:56:05,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-08 07:56:05,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-08 07:56:05,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:56:05,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:56:05,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:56:05,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:56:05,155 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:56:05,155 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:56:05,156 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:56:05,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-02-08 07:56:05,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 07:56:05,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-02-08 07:56:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:56:05,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:56:05,366 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:56:05,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455878474] [2025-02-08 07:56:05,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455878474] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:56:05,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:56:05,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 07:56:05,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728060863] [2025-02-08 07:56:05,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:56:05,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:56:05,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:56:05,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:56:05,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:56:05,367 INFO L87 Difference]: Start difference. First operand 6189 states and 9185 transitions. Second operand has 5 states, 5 states have (on average 12.6) 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) [2025-02-08 07:56:05,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:56:05,821 INFO L93 Difference]: Finished difference Result 6442 states and 9172 transitions. [2025-02-08 07:56:05,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:56:05,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) 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 [2025-02-08 07:56:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:56:05,829 INFO L225 Difference]: With dead ends: 6442 [2025-02-08 07:56:05,829 INFO L226 Difference]: Without dead ends: 6442 [2025-02-08 07:56:05,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:56:05,830 INFO L435 NwaCegarLoop]: 2482 mSDtfsCounter, 912 mSDsluCounter, 5548 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 8030 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:56:05,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 8030 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 07:56:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6442 states. [2025-02-08 07:56:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6442 to 5664. [2025-02-08 07:56:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 4700 states have (on average 1.7646808510638299) internal successors, (8294), 5621 states have internal predecessors, (8294), 43 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-02-08 07:56:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 8376 transitions. [2025-02-08 07:56:05,897 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 8376 transitions. Word has length 63 [2025-02-08 07:56:05,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:56:05,897 INFO L471 AbstractCegarLoop]: Abstraction has 5664 states and 8376 transitions. [2025-02-08 07:56:05,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) 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) [2025-02-08 07:56:05,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 8376 transitions. [2025-02-08 07:56:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-08 07:56:05,897 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:56:05,897 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] [2025-02-08 07:56:05,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-08 07:56:06,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:06,098 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:56:06,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:56:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash 809687628, now seen corresponding path program 1 times [2025-02-08 07:56:06,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:56:06,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311556793] [2025-02-08 07:56:06,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:56:06,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:06,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:56:06,101 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:56:06,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 07:56:06,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-08 07:56:06,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-08 07:56:06,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:56:06,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:56:06,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:56:06,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:56:06,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:56:06,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 07:56:06,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 07:56:06,787 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:56:06,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 07:56:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:56:06,790 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:56:06,790 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:56:06,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311556793] [2025-02-08 07:56:06,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311556793] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:56:06,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:56:06,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:56:06,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118237929] [2025-02-08 07:56:06,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:56:06,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:56:06,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:56:06,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:56:06,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:56:06,791 INFO L87 Difference]: Start difference. First operand 5664 states and 8376 transitions. Second operand has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 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) [2025-02-08 07:56:09,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:56:09,395 INFO L93 Difference]: Finished difference Result 5580 states and 8133 transitions. [2025-02-08 07:56:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:56:09,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 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 [2025-02-08 07:56:09,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:56:09,411 INFO L225 Difference]: With dead ends: 5580 [2025-02-08 07:56:09,415 INFO L226 Difference]: Without dead ends: 5580 [2025-02-08 07:56:09,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:56:09,417 INFO L435 NwaCegarLoop]: 1098 mSDtfsCounter, 1678 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-08 07:56:09,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 1457 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-08 07:56:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5580 states. [2025-02-08 07:56:09,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5580 to 5432. [2025-02-08 07:56:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5432 states, 4552 states have (on average 1.7106766256590509) internal successors, (7787), 5389 states have internal predecessors, (7787), 43 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-02-08 07:56:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5432 states to 5432 states and 7869 transitions. [2025-02-08 07:56:09,460 INFO L78 Accepts]: Start accepts. Automaton has 5432 states and 7869 transitions. Word has length 63 [2025-02-08 07:56:09,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:56:09,460 INFO L471 AbstractCegarLoop]: Abstraction has 5432 states and 7869 transitions. [2025-02-08 07:56:09,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 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) [2025-02-08 07:56:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5432 states and 7869 transitions. [2025-02-08 07:56:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-08 07:56:09,461 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:56:09,461 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] [2025-02-08 07:56:09,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-08 07:56:09,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:09,662 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1082REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-02-08 07:56:09,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:56:09,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1188269648, now seen corresponding path program 1 times [2025-02-08 07:56:09,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:56:09,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091173330] [2025-02-08 07:56:09,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:56:09,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:56:09,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:56:09,666 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:56:09,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 07:56:09,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-08 07:56:09,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-08 07:56:09,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:56:09,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:56:09,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:56:09,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:56:09,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:56:09,917 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 [2025-02-08 07:56:09,947 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 [2025-02-08 07:56:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:56:09,953 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:56:09,953 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:56:09,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091173330] [2025-02-08 07:56:09,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091173330] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:56:09,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:56:09,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:56:09,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516380714] [2025-02-08 07:56:09,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:56:09,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:56:09,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:56:09,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:56:09,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:56:09,954 INFO L87 Difference]: Start difference. First operand 5432 states and 7869 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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)