./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:27:26,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:27:27,002 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-09 22:27:27,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:27:27,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:27:27,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:27:27,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:27:27,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:27:27,028 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:27:27,028 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:27:27,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:27:27,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:27:27,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:27:27,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:27:27,029 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:27:27,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:27:27,030 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:27:27,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:27:27,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:27:27,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:27:27,031 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:27:27,031 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:27:27,031 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:27:27,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:27:27,031 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:27:27,031 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:27:27,031 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:27:27,031 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:27:27,031 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:27:27,031 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:27:27,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:27:27,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:27:27,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:27:27,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:27:27,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:27:27,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:27:27,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:27:27,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:27:27,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:27:27,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:27:27,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:27:27,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 22:27:27,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 22:27:27,033 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:27:27,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:27:27,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:27:27,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:27:27,033 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 -> 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f [2025-01-09 22:27:27,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:27:27,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:27:27,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:27:27,268 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:27:27,269 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:27:27,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2025-01-09 22:27:28,485 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/12f925cca/aafc83fa734448b791497406d0a16fb9/FLAG58876f8e9 [2025-01-09 22:27:28,756 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:27:28,758 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2025-01-09 22:27:28,774 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/12f925cca/aafc83fa734448b791497406d0a16fb9/FLAG58876f8e9 [2025-01-09 22:27:28,788 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/12f925cca/aafc83fa734448b791497406d0a16fb9 [2025-01-09 22:27:28,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:27:28,790 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:27:28,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:27:28,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:27:28,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:27:28,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:27:28" (1/1) ... [2025-01-09 22:27:28,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338fa27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:28, skipping insertion in model container [2025-01-09 22:27:28,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:27:28" (1/1) ... [2025-01-09 22:27:28,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:27:29,032 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:27:29,082 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:27:29,086 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:27:29,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:27:29,105 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-01-09 22:27:29,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d631662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:29, skipping insertion in model container [2025-01-09 22:27:29,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:27:29,106 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-09 22:27:29,108 INFO L158 Benchmark]: Toolchain (without parser) took 317.13ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 91.4MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:27:29,108 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:27:29,108 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.88ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 91.4MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:27:29,110 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.88ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 91.4MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: 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/ldv-memsafety/memleaks_test18_2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:27:30,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:27:30,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-09 22:27:30,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:27:30,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:27:30,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:27:30,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:27:30,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:27:30,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:27:30,930 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:27:30,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:27:30,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:27:30,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:27:30,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:27:30,931 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:27:30,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:27:30,931 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:27:30,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:27:30,932 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:27:30,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:27:30,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:27:30,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:27:30,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:27:30,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:27:30,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:27:30,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:27:30,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:27:30,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:27:30,934 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-09 22:27:30,935 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-09 22:27:30,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:27:30,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:27:30,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:27:30,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:27:30,935 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 -> 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f [2025-01-09 22:27:31,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:27:31,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:27:31,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:27:31,189 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:27:31,190 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:27:31,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2025-01-09 22:27:32,380 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/393a733f5/06b9b95dce7a40a08e94deef051c9524/FLAG5db742026 [2025-01-09 22:27:32,599 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:27:32,600 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2025-01-09 22:27:32,613 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/393a733f5/06b9b95dce7a40a08e94deef051c9524/FLAG5db742026 [2025-01-09 22:27:32,628 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/393a733f5/06b9b95dce7a40a08e94deef051c9524 [2025-01-09 22:27:32,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:27:32,634 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:27:32,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:27:32,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:27:32,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:27:32,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:27:32" (1/1) ... [2025-01-09 22:27:32,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a31f3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:32, skipping insertion in model container [2025-01-09 22:27:32,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:27:32" (1/1) ... [2025-01-09 22:27:32,671 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:27:32,892 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:27:32,935 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:27:32,936 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:27:32,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:27:32,949 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-09 22:27:32,954 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:27:32,971 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:27:32,987 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:27:32,988 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:27:32,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:27:33,001 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 22:27:33,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:27:33,076 INFO L204 MainTranslator]: Completed translation [2025-01-09 22:27:33,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33 WrapperNode [2025-01-09 22:27:33,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:27:33,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 22:27:33,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 22:27:33,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 22:27:33,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,126 INFO L138 Inliner]: procedures = 165, calls = 73, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 47 [2025-01-09 22:27:33,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 22:27:33,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 22:27:33,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 22:27:33,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 22:27:33,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,136 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,151 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-01-09 22:27:33,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,164 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,167 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 22:27:33,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 22:27:33,177 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 22:27:33,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 22:27:33,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (1/1) ... [2025-01-09 22:27:33,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:27:33,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:33,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 22:27:33,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 22:27:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-01-09 22:27:33,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-01-09 22:27:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 22:27:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 22:27:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 22:27:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 22:27:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 22:27:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 22:27:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 22:27:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 22:27:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 22:27:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 22:27:33,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 22:27:33,330 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 22:27:33,333 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 22:27:33,469 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2025-01-09 22:27:33,470 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 22:27:33,477 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 22:27:33,477 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 22:27:33,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:27:33 BoogieIcfgContainer [2025-01-09 22:27:33,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 22:27:33,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 22:27:33,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 22:27:33,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 22:27:33,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:27:32" (1/3) ... [2025-01-09 22:27:33,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592e8a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:27:33, skipping insertion in model container [2025-01-09 22:27:33,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:27:33" (2/3) ... [2025-01-09 22:27:33,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592e8a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:27:33, skipping insertion in model container [2025-01-09 22:27:33,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:27:33" (3/3) ... [2025-01-09 22:27:33,486 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test18_2.i [2025-01-09 22:27:33,497 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 22:27:33,498 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test18_2.i that has 2 procedures, 39 locations, 1 initial locations, 2 loop locations, and 11 error locations. [2025-01-09 22:27:33,529 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 22:27:33,537 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;@71f252dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 22:27:33,537 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-01-09 22:27:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 35 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:27:33,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 22:27:33,544 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:33,545 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:33,545 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:33,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1163675043, now seen corresponding path program 1 times [2025-01-09 22:27:33,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:33,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071418043] [2025-01-09 22:27:33,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:33,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:33,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:33,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:27:33,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 22:27:33,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 22:27:33,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 22:27:33,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:33,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:33,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:27:33,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:27:33,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:27:33,729 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:33,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071418043] [2025-01-09 22:27:33,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071418043] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:27:33,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:27:33,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:27:33,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834109507] [2025-01-09 22:27:33,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:27:33,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:27:33,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:33,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:27:33,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:27:33,754 INFO L87 Difference]: Start difference. First operand has 39 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 35 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:27:33,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:33,865 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2025-01-09 22:27:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:27:33,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-01-09 22:27:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:33,872 INFO L225 Difference]: With dead ends: 63 [2025-01-09 22:27:33,873 INFO L226 Difference]: Without dead ends: 61 [2025-01-09 22:27:33,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:27:33,876 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 21 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:33,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 201 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:27:33,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-09 22:27:33,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 41. [2025-01-09 22:27:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 36 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 22:27:33,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2025-01-09 22:27:33,900 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 11 [2025-01-09 22:27:33,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:33,901 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2025-01-09 22:27:33,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:27:33,901 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2025-01-09 22:27:33,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 22:27:33,902 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:33,902 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:33,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 22:27:34,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:34,103 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:34,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:34,104 INFO L85 PathProgramCache]: Analyzing trace with hash -276171362, now seen corresponding path program 1 times [2025-01-09 22:27:34,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:34,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069961048] [2025-01-09 22:27:34,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:34,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:34,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:34,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:27:34,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 22:27:34,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 22:27:34,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 22:27:34,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:34,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:34,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:27:34,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:27:34,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:27:34,170 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:34,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069961048] [2025-01-09 22:27:34,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069961048] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:27:34,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:27:34,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:27:34,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440589803] [2025-01-09 22:27:34,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:27:34,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:27:34,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:34,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:27:34,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:27:34,172 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:27:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:34,238 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2025-01-09 22:27:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:27:34,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-01-09 22:27:34,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:34,239 INFO L225 Difference]: With dead ends: 68 [2025-01-09 22:27:34,239 INFO L226 Difference]: Without dead ends: 66 [2025-01-09 22:27:34,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:27:34,240 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 26 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:34,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 142 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:27:34,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-01-09 22:27:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2025-01-09 22:27:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 41 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 22:27:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2025-01-09 22:27:34,244 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 11 [2025-01-09 22:27:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:34,244 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2025-01-09 22:27:34,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:27:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2025-01-09 22:27:34,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 22:27:34,244 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:34,245 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:34,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 22:27:34,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:34,446 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:34,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:34,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1714152411, now seen corresponding path program 1 times [2025-01-09 22:27:34,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:34,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675489393] [2025-01-09 22:27:34,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:34,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:34,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:34,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:27:34,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 22:27:34,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 22:27:34,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 22:27:34,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:34,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:34,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 22:27:34,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:27:34,533 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:27:34,533 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:34,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675489393] [2025-01-09 22:27:34,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675489393] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:27:34,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:27:34,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 22:27:34,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217644802] [2025-01-09 22:27:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:27:34,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:27:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:34,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:27:34,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:27:34,534 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:27:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:34,564 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2025-01-09 22:27:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:27:34,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-01-09 22:27:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:34,565 INFO L225 Difference]: With dead ends: 62 [2025-01-09 22:27:34,565 INFO L226 Difference]: Without dead ends: 62 [2025-01-09 22:27:34,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:27:34,566 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 41 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:34,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 65 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:27:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-01-09 22:27:34,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2025-01-09 22:27:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.53125) internal successors, (49), 42 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 22:27:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2025-01-09 22:27:34,574 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 12 [2025-01-09 22:27:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:34,576 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2025-01-09 22:27:34,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:27:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2025-01-09 22:27:34,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 22:27:34,577 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:34,577 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:34,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 22:27:34,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:34,778 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:34,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash -491292402, now seen corresponding path program 1 times [2025-01-09 22:27:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:34,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957222318] [2025-01-09 22:27:34,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:34,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:34,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:34,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:27:34,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 22:27:34,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 22:27:34,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 22:27:34,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:34,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:34,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 22:27:34,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:34,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:27:34,946 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-09 22:27:34,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-01-09 22:27:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:27:34,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:27:43,170 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:43,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957222318] [2025-01-09 22:27:43,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957222318] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:27:43,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:27:43,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2025-01-09 22:27:43,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141220351] [2025-01-09 22:27:43,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:27:43,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 22:27:43,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:43,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 22:27:43,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=40, Unknown=1, NotChecked=0, Total=56 [2025-01-09 22:27:43,172 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:27:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:43,372 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2025-01-09 22:27:43,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:27:43,376 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2025-01-09 22:27:43,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:43,376 INFO L225 Difference]: With dead ends: 64 [2025-01-09 22:27:43,376 INFO L226 Difference]: Without dead ends: 64 [2025-01-09 22:27:43,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=20, Invalid=51, Unknown=1, NotChecked=0, Total=72 [2025-01-09 22:27:43,377 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:43,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 135 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:27:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-01-09 22:27:43,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2025-01-09 22:27:43,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 54 states have internal predecessors, (70), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2025-01-09 22:27:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2025-01-09 22:27:43,385 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 18 [2025-01-09 22:27:43,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:43,385 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2025-01-09 22:27:43,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:27:43,385 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2025-01-09 22:27:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 22:27:43,385 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:43,385 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:43,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 22:27:43,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:43,586 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:43,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:43,587 INFO L85 PathProgramCache]: Analyzing trace with hash -491292401, now seen corresponding path program 1 times [2025-01-09 22:27:43,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:43,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577948219] [2025-01-09 22:27:43,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:43,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:43,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:43,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:27:43,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 22:27:43,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 22:27:43,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 22:27:43,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:43,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:43,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 22:27:43,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:43,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:27:43,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:27:43,816 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-01-09 22:27:43,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:27:43,838 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 [2025-01-09 22:27:43,848 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:27:43,848 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 [2025-01-09 22:27:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2025-01-09 22:27:43,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:48,115 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:48,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577948219] [2025-01-09 22:27:48,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577948219] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:27:48,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1984983659] [2025-01-09 22:27:48,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:48,116 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:27:48,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:27:48,139 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:27:48,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2025-01-09 22:27:48,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 22:27:48,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 22:27:48,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:48,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:48,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 22:27:48,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:48,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:27:48,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:27:48,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:27:48,335 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 [2025-01-09 22:27:48,347 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:27:48,348 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 [2025-01-09 22:27:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2025-01-09 22:27:48,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:48,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1984983659] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:27:48,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:27:48,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2025-01-09 22:27:48,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391050975] [2025-01-09 22:27:48,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:27:48,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 22:27:48,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:48,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 22:27:48,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=87, Unknown=2, NotChecked=18, Total=132 [2025-01-09 22:27:48,513 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:27:48,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:48,834 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2025-01-09 22:27:48,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 22:27:48,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2025-01-09 22:27:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:48,836 INFO L225 Difference]: With dead ends: 73 [2025-01-09 22:27:48,836 INFO L226 Difference]: Without dead ends: 73 [2025-01-09 22:27:48,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=49, Invalid=193, Unknown=2, NotChecked=28, Total=272 [2025-01-09 22:27:48,836 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 45 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:48,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 165 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 178 Invalid, 0 Unknown, 60 Unchecked, 0.2s Time] [2025-01-09 22:27:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-01-09 22:27:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2025-01-09 22:27:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 57 states have internal predecessors, (74), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2025-01-09 22:27:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 89 transitions. [2025-01-09 22:27:48,843 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 89 transitions. Word has length 18 [2025-01-09 22:27:48,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:48,844 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 89 transitions. [2025-01-09 22:27:48,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:27:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 89 transitions. [2025-01-09 22:27:48,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 22:27:48,844 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:48,844 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:48,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2025-01-09 22:27:49,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 22:27:49,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:49,245 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:49,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash -996851027, now seen corresponding path program 1 times [2025-01-09 22:27:49,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:49,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691209031] [2025-01-09 22:27:49,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:49,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:49,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:49,248 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:27:49,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 22:27:49,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 22:27:49,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 22:27:49,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:49,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:49,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 22:27:49,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:27:49,341 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:27:49,341 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:49,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691209031] [2025-01-09 22:27:49,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691209031] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:27:49,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:27:49,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:27:49,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290094952] [2025-01-09 22:27:49,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:27:49,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:27:49,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:49,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:27:49,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:27:49,343 INFO L87 Difference]: Start difference. First operand 66 states and 89 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:27:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:49,374 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2025-01-09 22:27:49,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:27:49,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2025-01-09 22:27:49,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:49,375 INFO L225 Difference]: With dead ends: 50 [2025-01-09 22:27:49,375 INFO L226 Difference]: Without dead ends: 48 [2025-01-09 22:27:49,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:27:49,376 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:49,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:27:49,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-09 22:27:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-01-09 22:27:49,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 43 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 22:27:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2025-01-09 22:27:49,380 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 18 [2025-01-09 22:27:49,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:49,381 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2025-01-09 22:27:49,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:27:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2025-01-09 22:27:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-09 22:27:49,381 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:49,381 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:49,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 22:27:49,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:49,585 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:49,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:49,586 INFO L85 PathProgramCache]: Analyzing trace with hash 314351991, now seen corresponding path program 1 times [2025-01-09 22:27:49,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:49,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402183295] [2025-01-09 22:27:49,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:49,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:49,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:49,589 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) [2025-01-09 22:27:49,590 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 [2025-01-09 22:27:49,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 22:27:49,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 22:27:49,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:49,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:49,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:27:49,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:27:49,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:27:49,685 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:49,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402183295] [2025-01-09 22:27:49,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402183295] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:27:49,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:27:49,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2025-01-09 22:27:49,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825626857] [2025-01-09 22:27:49,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:27:49,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:27:49,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:49,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:27:49,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:27:49,686 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:27:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:49,717 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2025-01-09 22:27:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:27:49,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2025-01-09 22:27:49,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:49,718 INFO L225 Difference]: With dead ends: 48 [2025-01-09 22:27:49,718 INFO L226 Difference]: Without dead ends: 48 [2025-01-09 22:27:49,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:27:49,719 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 13 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:49,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:27:49,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-09 22:27:49,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2025-01-09 22:27:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 42 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 22:27:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2025-01-09 22:27:49,721 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 20 [2025-01-09 22:27:49,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:49,721 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2025-01-09 22:27:49,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:27:49,721 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2025-01-09 22:27:49,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-09 22:27:49,721 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:49,721 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:49,727 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 [2025-01-09 22:27:49,922 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 [2025-01-09 22:27:49,922 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:49,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:49,922 INFO L85 PathProgramCache]: Analyzing trace with hash 314351641, now seen corresponding path program 1 times [2025-01-09 22:27:49,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:49,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732902205] [2025-01-09 22:27:49,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:49,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:49,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:49,925 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) [2025-01-09 22:27:49,926 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 [2025-01-09 22:27:49,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 22:27:49,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 22:27:49,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:49,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:49,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:27:49,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:27:49,997 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:27:49,998 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:49,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732902205] [2025-01-09 22:27:49,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732902205] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:27:49,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:27:49,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:27:49,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746431230] [2025-01-09 22:27:49,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:27:49,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:27:49,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:49,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:27:49,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:27:49,998 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:27:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:50,016 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2025-01-09 22:27:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:27:50,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2025-01-09 22:27:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:50,017 INFO L225 Difference]: With dead ends: 54 [2025-01-09 22:27:50,017 INFO L226 Difference]: Without dead ends: 54 [2025-01-09 22:27:50,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:27:50,018 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:50,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 136 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:27:50,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-01-09 22:27:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2025-01-09 22:27:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 44 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 22:27:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2025-01-09 22:27:50,020 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 20 [2025-01-09 22:27:50,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:50,020 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2025-01-09 22:27:50,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:27:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2025-01-09 22:27:50,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-09 22:27:50,021 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:50,021 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:50,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 22:27:50,221 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 [2025-01-09 22:27:50,221 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:50,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:50,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2057161976, now seen corresponding path program 1 times [2025-01-09 22:27:50,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:50,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048367278] [2025-01-09 22:27:50,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:50,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:50,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:50,224 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) [2025-01-09 22:27:50,225 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 [2025-01-09 22:27:50,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 22:27:50,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 22:27:50,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:50,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:50,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 22:27:50,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 22:27:50,279 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:27:50,279 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048367278] [2025-01-09 22:27:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048367278] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:27:50,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:27:50,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 22:27:50,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343170762] [2025-01-09 22:27:50,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:27:50,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:27:50,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:50,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:27:50,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:27:50,280 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:27:50,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:50,314 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2025-01-09 22:27:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:27:50,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2025-01-09 22:27:50,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:50,314 INFO L225 Difference]: With dead ends: 54 [2025-01-09 22:27:50,314 INFO L226 Difference]: Without dead ends: 54 [2025-01-09 22:27:50,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:27:50,315 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:50,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 89 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:27:50,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-01-09 22:27:50,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2025-01-09 22:27:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 46 states have internal predecessors, (55), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 22:27:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2025-01-09 22:27:50,318 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 20 [2025-01-09 22:27:50,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:50,318 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2025-01-09 22:27:50,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:27:50,318 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2025-01-09 22:27:50,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 22:27:50,318 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:50,318 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:50,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 22:27:50,523 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 [2025-01-09 22:27:50,523 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:50,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash -652477251, now seen corresponding path program 1 times [2025-01-09 22:27:50,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:50,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877284815] [2025-01-09 22:27:50,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:50,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:50,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:50,526 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) [2025-01-09 22:27:50,528 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 [2025-01-09 22:27:50,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 22:27:50,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:27:50,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:50,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:50,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:27:50,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:27:50,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:27:50,669 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:50,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877284815] [2025-01-09 22:27:50,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877284815] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:27:50,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:27:50,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2025-01-09 22:27:50,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477290195] [2025-01-09 22:27:50,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:27:50,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:27:50,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:50,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:27:50,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:27:50,671 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:27:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:50,741 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2025-01-09 22:27:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:27:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2025-01-09 22:27:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:50,741 INFO L225 Difference]: With dead ends: 53 [2025-01-09 22:27:50,742 INFO L226 Difference]: Without dead ends: 53 [2025-01-09 22:27:50,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:27:50,742 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:50,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 64 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:27:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-01-09 22:27:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2025-01-09 22:27:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.358974358974359) internal successors, (53), 45 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 22:27:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2025-01-09 22:27:50,745 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 21 [2025-01-09 22:27:50,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:50,745 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2025-01-09 22:27:50,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:27:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2025-01-09 22:27:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 22:27:50,745 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:50,745 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:50,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 22:27:50,950 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 [2025-01-09 22:27:50,950 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:50,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:50,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1494764785, now seen corresponding path program 1 times [2025-01-09 22:27:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:50,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924343045] [2025-01-09 22:27:50,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:50,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:50,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:50,953 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) [2025-01-09 22:27:50,954 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 [2025-01-09 22:27:50,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 22:27:50,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 22:27:50,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:50,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:51,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:27:51,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 22:27:51,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 22:27:51,100 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:51,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924343045] [2025-01-09 22:27:51,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924343045] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:27:51,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:27:51,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-01-09 22:27:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667141116] [2025-01-09 22:27:51,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:27:51,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 22:27:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:51,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 22:27:51,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-01-09 22:27:51,101 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 22:27:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:51,178 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2025-01-09 22:27:51,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:27:51,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2025-01-09 22:27:51,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:51,179 INFO L225 Difference]: With dead ends: 73 [2025-01-09 22:27:51,179 INFO L226 Difference]: Without dead ends: 73 [2025-01-09 22:27:51,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2025-01-09 22:27:51,180 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 91 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:51,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 128 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:27:51,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-01-09 22:27:51,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2025-01-09 22:27:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 59 states have internal predecessors, (73), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2025-01-09 22:27:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2025-01-09 22:27:51,183 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 22 [2025-01-09 22:27:51,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:51,183 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2025-01-09 22:27:51,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 22:27:51,183 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2025-01-09 22:27:51,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 22:27:51,184 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:51,184 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:51,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 22:27:51,388 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 [2025-01-09 22:27:51,388 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:51,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:51,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1072281627, now seen corresponding path program 1 times [2025-01-09 22:27:51,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:51,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079903528] [2025-01-09 22:27:51,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:51,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:51,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:51,392 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) [2025-01-09 22:27:51,393 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 [2025-01-09 22:27:51,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 22:27:51,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 22:27:51,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:51,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:51,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 22:27:51,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:51,529 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.base_23| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_23| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_23|)))) is different from true [2025-01-09 22:27:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:27:51,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:51,591 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2025-01-09 22:27:51,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2025-01-09 22:27:51,690 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:51,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079903528] [2025-01-09 22:27:51,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079903528] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:27:51,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [552848658] [2025-01-09 22:27:51,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:51,691 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:27:51,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:27:51,696 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:27:51,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2025-01-09 22:27:51,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 22:27:51,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 22:27:51,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:51,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:51,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 22:27:51,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:27:51,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:52,034 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2025-01-09 22:27:52,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2025-01-09 22:27:52,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [552848658] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:27:52,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:27:52,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2025-01-09 22:27:52,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650024010] [2025-01-09 22:27:52,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:27:52,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 22:27:52,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:52,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 22:27:52,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=106, Unknown=1, NotChecked=20, Total=156 [2025-01-09 22:27:52,136 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 22:27:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:52,434 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2025-01-09 22:27:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 22:27:52,435 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2025-01-09 22:27:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:52,435 INFO L225 Difference]: With dead ends: 106 [2025-01-09 22:27:52,435 INFO L226 Difference]: Without dead ends: 99 [2025-01-09 22:27:52,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=221, Unknown=1, NotChecked=30, Total=306 [2025-01-09 22:27:52,436 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:52,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 204 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 192 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2025-01-09 22:27:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-01-09 22:27:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2025-01-09 22:27:52,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 77 states have internal predecessors, (97), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2025-01-09 22:27:52,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 120 transitions. [2025-01-09 22:27:52,440 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 120 transitions. Word has length 24 [2025-01-09 22:27:52,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:52,441 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 120 transitions. [2025-01-09 22:27:52,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 22:27:52,441 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 120 transitions. [2025-01-09 22:27:52,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 22:27:52,441 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:52,441 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:52,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2025-01-09 22:27:52,648 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 [2025-01-09 22:27:52,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:52,843 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:52,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1905189083, now seen corresponding path program 1 times [2025-01-09 22:27:52,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:52,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23436536] [2025-01-09 22:27:52,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:52,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:52,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:52,846 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) [2025-01-09 22:27:52,846 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 [2025-01-09 22:27:52,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-09 22:27:52,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 22:27:52,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:52,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:52,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-09 22:27:52,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:52,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:27:52,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:27:53,014 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-01-09 22:27:53,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:27:53,031 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 [2025-01-09 22:27:53,051 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:27:53,051 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 [2025-01-09 22:27:53,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:27:53,160 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 [2025-01-09 22:27:53,169 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:27:53,169 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 [2025-01-09 22:27:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2025-01-09 22:27:53,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:53,418 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:53,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23436536] [2025-01-09 22:27:53,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23436536] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:27:53,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [593113120] [2025-01-09 22:27:53,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:53,418 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:27:53,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:27:53,420 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:27:53,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2025-01-09 22:27:53,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-09 22:27:53,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 22:27:53,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:53,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:53,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 22:27:53,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:53,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:27:53,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:27:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:27:53,616 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 [2025-01-09 22:27:53,624 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:27:53,624 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 [2025-01-09 22:27:53,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:27:53,686 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 [2025-01-09 22:27:53,695 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:27:53,696 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 [2025-01-09 22:27:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2025-01-09 22:27:53,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:53,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [593113120] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:27:53,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:27:53,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2025-01-09 22:27:53,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174267322] [2025-01-09 22:27:53,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:27:53,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 22:27:53,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:53,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 22:27:53,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2025-01-09 22:27:53,854 INFO L87 Difference]: Start difference. First operand 91 states and 120 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 22:27:54,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:54,192 INFO L93 Difference]: Finished difference Result 95 states and 122 transitions. [2025-01-09 22:27:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 22:27:54,193 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2025-01-09 22:27:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:54,195 INFO L225 Difference]: With dead ends: 95 [2025-01-09 22:27:54,195 INFO L226 Difference]: Without dead ends: 95 [2025-01-09 22:27:54,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=313, Unknown=1, NotChecked=36, Total=420 [2025-01-09 22:27:54,195 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 46 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:54,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 193 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 214 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2025-01-09 22:27:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-01-09 22:27:54,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2025-01-09 22:27:54,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 77 states have internal predecessors, (95), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2025-01-09 22:27:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 118 transitions. [2025-01-09 22:27:54,206 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 118 transitions. Word has length 28 [2025-01-09 22:27:54,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:54,206 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 118 transitions. [2025-01-09 22:27:54,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 22:27:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 118 transitions. [2025-01-09 22:27:54,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 22:27:54,207 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:54,207 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:54,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2025-01-09 22:27:54,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-09 22:27:54,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:54,611 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:54,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:54,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1321569852, now seen corresponding path program 1 times [2025-01-09 22:27:54,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:54,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479832742] [2025-01-09 22:27:54,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:54,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:54,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:54,617 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) [2025-01-09 22:27:54,618 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 [2025-01-09 22:27:54,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-09 22:27:54,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 22:27:54,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:54,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:54,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 22:27:54,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:27:54,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:55,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-01-09 22:27:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:27:55,280 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:55,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479832742] [2025-01-09 22:27:55,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479832742] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:27:55,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:27:55,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2025-01-09 22:27:55,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480932546] [2025-01-09 22:27:55,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:27:55,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 22:27:55,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:55,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 22:27:55,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2025-01-09 22:27:55,282 INFO L87 Difference]: Start difference. First operand 91 states and 118 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-09 22:27:55,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:55,998 INFO L93 Difference]: Finished difference Result 118 states and 151 transitions. [2025-01-09 22:27:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 22:27:55,999 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2025-01-09 22:27:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:56,000 INFO L225 Difference]: With dead ends: 118 [2025-01-09 22:27:56,000 INFO L226 Difference]: Without dead ends: 118 [2025-01-09 22:27:56,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2025-01-09 22:27:56,001 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 18 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:56,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 288 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 22:27:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-01-09 22:27:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 91. [2025-01-09 22:27:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 77 states have internal predecessors, (94), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2025-01-09 22:27:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2025-01-09 22:27:56,004 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 30 [2025-01-09 22:27:56,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:56,005 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2025-01-09 22:27:56,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-09 22:27:56,005 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2025-01-09 22:27:56,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 22:27:56,005 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:56,005 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:56,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-09 22:27:56,206 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 [2025-01-09 22:27:56,206 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:56,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:56,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1981007528, now seen corresponding path program 1 times [2025-01-09 22:27:56,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:56,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636236307] [2025-01-09 22:27:56,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:56,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:56,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:56,209 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) [2025-01-09 22:27:56,210 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 [2025-01-09 22:27:56,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-09 22:27:56,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 22:27:56,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:56,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:56,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 22:27:56,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:56,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 22:27:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 22:27:56,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 22:27:56,699 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:56,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636236307] [2025-01-09 22:27:56,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636236307] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:27:56,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:27:56,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2025-01-09 22:27:56,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383845647] [2025-01-09 22:27:56,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:27:56,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 22:27:56,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:56,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 22:27:56,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2025-01-09 22:27:56,701 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand has 17 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-01-09 22:27:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:57,202 INFO L93 Difference]: Finished difference Result 110 states and 135 transitions. [2025-01-09 22:27:57,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 22:27:57,203 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 31 [2025-01-09 22:27:57,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:57,203 INFO L225 Difference]: With dead ends: 110 [2025-01-09 22:27:57,203 INFO L226 Difference]: Without dead ends: 110 [2025-01-09 22:27:57,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2025-01-09 22:27:57,204 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 46 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:57,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 277 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 22:27:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-01-09 22:27:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2025-01-09 22:27:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 83 states have internal predecessors, (100), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2025-01-09 22:27:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2025-01-09 22:27:57,212 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 31 [2025-01-09 22:27:57,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:57,212 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2025-01-09 22:27:57,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-01-09 22:27:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2025-01-09 22:27:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-09 22:27:57,214 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:57,214 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:57,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-09 22:27:57,414 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 [2025-01-09 22:27:57,415 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:57,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1281691299, now seen corresponding path program 1 times [2025-01-09 22:27:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:57,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232234779] [2025-01-09 22:27:57,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:57,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:57,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:57,417 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) [2025-01-09 22:27:57,423 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 [2025-01-09 22:27:57,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 22:27:57,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 22:27:57,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:57,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:57,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 22:27:57,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:57,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 22:27:57,799 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 [2025-01-09 22:27:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:27:57,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:27:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 22:27:58,058 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:58,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232234779] [2025-01-09 22:27:58,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232234779] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:27:58,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:27:58,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19 [2025-01-09 22:27:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792904738] [2025-01-09 22:27:58,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:27:58,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 22:27:58,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:58,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 22:27:58,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2025-01-09 22:27:58,065 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-01-09 22:27:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:59,259 INFO L93 Difference]: Finished difference Result 177 states and 214 transitions. [2025-01-09 22:27:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-01-09 22:27:59,260 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 32 [2025-01-09 22:27:59,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:59,262 INFO L225 Difference]: With dead ends: 177 [2025-01-09 22:27:59,262 INFO L226 Difference]: Without dead ends: 177 [2025-01-09 22:27:59,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=1243, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 22:27:59,263 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 58 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:59,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 254 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 22:27:59,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-01-09 22:27:59,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 128. [2025-01-09 22:27:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 104 states have (on average 1.2788461538461537) internal successors, (133), 109 states have internal predecessors, (133), 10 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (19), 15 states have call predecessors, (19), 10 states have call successors, (19) [2025-01-09 22:27:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 162 transitions. [2025-01-09 22:27:59,276 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 162 transitions. Word has length 32 [2025-01-09 22:27:59,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:59,277 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 162 transitions. [2025-01-09 22:27:59,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-01-09 22:27:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 162 transitions. [2025-01-09 22:27:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-09 22:27:59,281 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:59,281 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:59,296 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 [2025-01-09 22:27:59,481 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 [2025-01-09 22:27:59,482 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:59,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash 872867074, now seen corresponding path program 2 times [2025-01-09 22:27:59,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:59,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131308106] [2025-01-09 22:27:59,484 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:27:59,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:59,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:59,486 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) [2025-01-09 22:27:59,488 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 [2025-01-09 22:27:59,531 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-01-09 22:27:59,543 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 22:27:59,543 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:27:59,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:59,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 22:27:59,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:27:59,572 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:27:59,572 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:27:59,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131308106] [2025-01-09 22:27:59,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131308106] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:27:59,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:27:59,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:27:59,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353119020] [2025-01-09 22:27:59,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:27:59,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:27:59,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:27:59,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:27:59,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:27:59,573 INFO L87 Difference]: Start difference. First operand 128 states and 162 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:27:59,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:27:59,592 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2025-01-09 22:27:59,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:27:59,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2025-01-09 22:27:59,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:27:59,593 INFO L225 Difference]: With dead ends: 84 [2025-01-09 22:27:59,593 INFO L226 Difference]: Without dead ends: 80 [2025-01-09 22:27:59,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:27:59,593 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:27:59,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:27:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-01-09 22:27:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2025-01-09 22:27:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 67 states have internal predecessors, (73), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2025-01-09 22:27:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2025-01-09 22:27:59,595 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 32 [2025-01-09 22:27:59,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:27:59,595 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2025-01-09 22:27:59,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:27:59,595 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2025-01-09 22:27:59,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 22:27:59,598 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:27:59,598 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:27:59,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-09 22:27:59,798 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 [2025-01-09 22:27:59,799 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:27:59,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:27:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1077724682, now seen corresponding path program 1 times [2025-01-09 22:27:59,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:27:59,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155427360] [2025-01-09 22:27:59,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:27:59,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:27:59,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:27:59,802 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) [2025-01-09 22:27:59,803 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 [2025-01-09 22:27:59,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 22:27:59,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 22:27:59,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:27:59,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:27:59,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 22:27:59,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:27:59,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:27:59,936 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 15 treesize of output 1 [2025-01-09 22:27:59,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2025-01-09 22:28:00,037 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 19 treesize of output 11 [2025-01-09 22:28:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:28:00,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:28:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:28:00,266 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:28:00,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155427360] [2025-01-09 22:28:00,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155427360] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:28:00,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:28:00,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2025-01-09 22:28:00,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104842522] [2025-01-09 22:28:00,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:28:00,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 22:28:00,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:28:00,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 22:28:00,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2025-01-09 22:28:00,266 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-01-09 22:28:00,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:28:00,992 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2025-01-09 22:28:00,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 22:28:00,993 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 33 [2025-01-09 22:28:00,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:28:00,993 INFO L225 Difference]: With dead ends: 83 [2025-01-09 22:28:00,993 INFO L226 Difference]: Without dead ends: 83 [2025-01-09 22:28:00,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2025-01-09 22:28:00,994 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 22:28:00,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 216 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 22:28:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-01-09 22:28:00,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2025-01-09 22:28:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 68 states have internal predecessors, (74), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2025-01-09 22:28:00,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2025-01-09 22:28:00,996 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 33 [2025-01-09 22:28:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:28:00,996 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2025-01-09 22:28:00,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-01-09 22:28:00,996 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2025-01-09 22:28:00,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-09 22:28:00,996 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:28:00,996 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:28:01,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-01-09 22:28:01,199 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 [2025-01-09 22:28:01,200 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:28:01,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:28:01,200 INFO L85 PathProgramCache]: Analyzing trace with hash 606303245, now seen corresponding path program 1 times [2025-01-09 22:28:01,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:28:01,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773442677] [2025-01-09 22:28:01,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:28:01,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:28:01,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:28:01,204 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) [2025-01-09 22:28:01,205 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 [2025-01-09 22:28:01,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-09 22:28:01,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 22:28:01,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:28:01,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:28:01,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 22:28:01,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:28:01,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:28:01,336 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:28:01,336 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 [2025-01-09 22:28:01,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 22:28:05,440 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_24| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_24| (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_24|) (_ bv0 32))))) is different from true [2025-01-09 22:28:05,524 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 16 treesize of output 8 [2025-01-09 22:28:05,560 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 16 treesize of output 13 [2025-01-09 22:28:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2025-01-09 22:28:05,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:28:05,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2025-01-09 22:28:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:28:05,952 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:28:05,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773442677] [2025-01-09 22:28:05,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773442677] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:28:05,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:28:05,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 22 [2025-01-09 22:28:05,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599631572] [2025-01-09 22:28:05,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:28:05,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 22:28:05,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:28:05,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 22:28:05,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=412, Unknown=1, NotChecked=40, Total=506 [2025-01-09 22:28:05,953 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 23 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 19 states have internal predecessors, (48), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-09 22:28:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:28:11,022 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2025-01-09 22:28:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 22:28:11,022 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 19 states have internal predecessors, (48), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 35 [2025-01-09 22:28:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:28:11,023 INFO L225 Difference]: With dead ends: 93 [2025-01-09 22:28:11,023 INFO L226 Difference]: Without dead ends: 93 [2025-01-09 22:28:11,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=161, Invalid=1323, Unknown=2, NotChecked=74, Total=1560 [2025-01-09 22:28:11,024 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 22:28:11,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 257 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 619 Invalid, 0 Unknown, 78 Unchecked, 0.6s Time] [2025-01-09 22:28:11,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-01-09 22:28:11,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2025-01-09 22:28:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 73 states have internal predecessors, (82), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2025-01-09 22:28:11,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2025-01-09 22:28:11,026 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 35 [2025-01-09 22:28:11,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:28:11,026 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2025-01-09 22:28:11,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 19 states have internal predecessors, (48), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-09 22:28:11,027 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2025-01-09 22:28:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-09 22:28:11,027 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:28:11,027 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:28:11,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-01-09 22:28:11,227 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 [2025-01-09 22:28:11,228 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:28:11,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:28:11,228 INFO L85 PathProgramCache]: Analyzing trace with hash 606303246, now seen corresponding path program 1 times [2025-01-09 22:28:11,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:28:11,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309569459] [2025-01-09 22:28:11,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:28:11,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:28:11,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:28:11,232 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) [2025-01-09 22:28:11,234 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 [2025-01-09 22:28:11,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-09 22:28:11,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 22:28:11,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:28:11,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:28:11,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 22:28:11,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:28:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 22:28:11,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:28:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 22:28:11,444 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:28:11,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309569459] [2025-01-09 22:28:11,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309569459] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:28:11,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:28:11,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2025-01-09 22:28:11,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793253802] [2025-01-09 22:28:11,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:28:11,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 22:28:11,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:28:11,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 22:28:11,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-09 22:28:11,445 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 22:28:11,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:28:11,548 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2025-01-09 22:28:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:28:11,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 35 [2025-01-09 22:28:11,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:28:11,550 INFO L225 Difference]: With dead ends: 90 [2025-01-09 22:28:11,550 INFO L226 Difference]: Without dead ends: 90 [2025-01-09 22:28:11,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-09 22:28:11,550 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:28:11,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 145 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:28:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-01-09 22:28:11,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2025-01-09 22:28:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 78 states have internal predecessors, (87), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2025-01-09 22:28:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2025-01-09 22:28:11,554 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 35 [2025-01-09 22:28:11,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:28:11,554 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2025-01-09 22:28:11,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 22:28:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2025-01-09 22:28:11,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 22:28:11,555 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:28:11,555 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:28:11,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-01-09 22:28:11,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:28:11,756 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:28:11,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:28:11,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1238366631, now seen corresponding path program 2 times [2025-01-09 22:28:11,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:28:11,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65322897] [2025-01-09 22:28:11,757 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:28:11,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:28:11,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:28:11,759 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:28:11,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-09 22:28:11,803 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-01-09 22:28:11,824 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 22:28:11,824 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:28:11,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:28:11,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 22:28:11,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:28:11,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:28:11,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:28:11,972 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-01-09 22:28:11,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:28:11,991 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 [2025-01-09 22:28:12,003 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:28:12,003 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 [2025-01-09 22:28:12,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:28:12,111 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 [2025-01-09 22:28:12,121 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:28:12,122 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 [2025-01-09 22:28:12,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:28:12,213 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 [2025-01-09 22:28:12,235 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:28:12,236 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 [2025-01-09 22:28:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 6 not checked. [2025-01-09 22:28:12,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:28:16,488 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:28:16,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65322897] [2025-01-09 22:28:16,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65322897] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:28:16,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [659956983] [2025-01-09 22:28:16,488 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:28:16,489 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:28:16,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:28:16,491 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:28:16,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2025-01-09 22:28:16,552 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-01-09 22:28:16,616 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 22:28:16,616 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:28:16,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:28:16,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 22:28:16,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:28:16,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:28:16,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:28:16,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:28:16,702 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 [2025-01-09 22:28:16,712 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:28:16,713 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 [2025-01-09 22:28:16,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:28:16,790 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 [2025-01-09 22:28:16,800 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:28:16,800 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 [2025-01-09 22:28:16,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:28:16,866 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 [2025-01-09 22:28:16,876 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:28:16,876 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 [2025-01-09 22:28:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 6 not checked. [2025-01-09 22:28:16,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:28:17,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [659956983] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:28:17,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:28:17,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2025-01-09 22:28:17,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541542468] [2025-01-09 22:28:17,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:28:17,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 22:28:17,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:28:17,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 22:28:17,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=171, Unknown=2, NotChecked=26, Total=240 [2025-01-09 22:28:17,039 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand has 14 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 22:28:17,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:28:17,423 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2025-01-09 22:28:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 22:28:17,424 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 38 [2025-01-09 22:28:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:28:17,424 INFO L225 Difference]: With dead ends: 94 [2025-01-09 22:28:17,424 INFO L226 Difference]: Without dead ends: 94 [2025-01-09 22:28:17,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=91, Invalid=463, Unknown=2, NotChecked=44, Total=600 [2025-01-09 22:28:17,425 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 55 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:28:17,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 219 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 279 Invalid, 0 Unknown, 68 Unchecked, 0.2s Time] [2025-01-09 22:28:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-01-09 22:28:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2025-01-09 22:28:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 78 states have internal predecessors, (86), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2025-01-09 22:28:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2025-01-09 22:28:17,427 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 38 [2025-01-09 22:28:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:28:17,427 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2025-01-09 22:28:17,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 22:28:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2025-01-09 22:28:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 22:28:17,428 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:28:17,428 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:28:17,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-09 22:28:17,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2025-01-09 22:28:17,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-01-09 22:28:17,832 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-01-09 22:28:17,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:28:17,833 INFO L85 PathProgramCache]: Analyzing trace with hash -780540879, now seen corresponding path program 1 times [2025-01-09 22:28:17,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:28:17,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900662623] [2025-01-09 22:28:17,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:28:17,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:28:17,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:28:17,836 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:28:17,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-09 22:28:17,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 22:28:17,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 22:28:17,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:28:17,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:28:17,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-09 22:28:17,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:28:18,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 22:28:18,250 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2025-01-09 22:28:18,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 29 [2025-01-09 22:28:18,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2025-01-09 22:28:30,877 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_#t~mem45#1.base_19| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.base_32| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_#t~mem45#1.base_19| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~array~0#1.base_32| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_#t~mem45#1.base_19|) (_ bv0 1)) (not (= |v_ULTIMATE.start_entry_point_~array~0#1.base_32| (_ bv0 32))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_32|)) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_32| (_ bv1 1)) |v_ULTIMATE.start_entry_point_#t~mem45#1.base_19| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~array~0#1.base_32|))))) is different from true [2025-01-09 22:28:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:28:30,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:28:31,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2025-01-09 22:28:41,011 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:28:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900662623] [2025-01-09 22:28:41,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900662623] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:28:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1786735943] [2025-01-09 22:28:41,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:28:41,011 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:28:41,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:28:41,014 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:28:41,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2025-01-09 22:28:41,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 22:28:41,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 22:28:41,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:28:41,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:28:41,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-09 22:28:41,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:28:41,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 22:28:42,096 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2025-01-09 22:28:42,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 32 [2025-01-09 22:28:42,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2025-01-09 22:28:42,787 WARN L873 $PredicateComparison]: unable to prove that (and (= (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)) (_ bv0 1)) (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.base_34| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem45#1.base_22| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_#t~mem45#1.base_22|)) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_34| (_ bv1 1)) |v_ULTIMATE.start_entry_point_#t~mem45#1.base_22| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~array~0#1.base_34|))) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_#t~mem45#1.base_22| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~array~0#1.base_34| (_ bv0 1))) (not (= |v_ULTIMATE.start_entry_point_~array~0#1.base_34| (_ bv0 32))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_34|) (_ bv0 1))))) is different from true [2025-01-09 22:28:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:28:42,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:28:43,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21