./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test6.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 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:27:27,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:27:27,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:27:27,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:27:27,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:27:27,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:27:27,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:27:27,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:27:27,238 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:27:27,238 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:27:27,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:27:27,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:27:27,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:27:27,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:27:27,238 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:27:27,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:27:27,238 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:27:27,238 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:27:27,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:27:27,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:27:27,238 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:27:27,239 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:27:27,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:27:27,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:27:27,240 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:27:27,240 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:27:27,240 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 -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2025-02-06 10:27:27,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:27:27,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:27:27,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:27:27,469 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:27:27,470 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:27:27,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2025-02-06 10:27:28,621 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/855024f1d/6097325a7221424692e5efe02358dfaa/FLAGcc94329eb [2025-02-06 10:27:28,907 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:27:28,909 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2025-02-06 10:27:28,919 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/855024f1d/6097325a7221424692e5efe02358dfaa/FLAGcc94329eb [2025-02-06 10:27:28,927 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/855024f1d/6097325a7221424692e5efe02358dfaa [2025-02-06 10:27:28,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:27:28,930 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:27:28,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:27:28,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:27:28,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:27:28,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:27:28" (1/1) ... [2025-02-06 10:27:28,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac98541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:28, skipping insertion in model container [2025-02-06 10:27:28,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:27:28" (1/1) ... [2025-02-06 10:27:28,969 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:27:29,139 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:27:29,169 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:27:29,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:27:29,185 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-06 10:27:29,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52e112e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:29, skipping insertion in model container [2025-02-06 10:27:29,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:27:29,185 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 10:27:29,186 INFO L158 Benchmark]: Toolchain (without parser) took 256.00ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 97.2MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:27:29,186 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:27:29,187 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.28ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 97.2MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:27:29,187 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 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.28ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 97.2MB in the end (delta: 13.9MB). 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_test6.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 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:27:30,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:27:30,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 10:27:30,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:27:30,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:27:30,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:27:30,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:27:30,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:27:30,834 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:27:30,834 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:27:30,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:27:30,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:27:30,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:27:30,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:27:30,835 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:27:30,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:27:30,836 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:27:30,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:27:30,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:27:30,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:27:30,836 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:27:30,836 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:27:30,836 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:27:30,837 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:27:30,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 10:27:30,837 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:27:30,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:27:30,838 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:27:30,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:27:30,838 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 -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2025-02-06 10:27:31,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:27:31,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:27:31,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:27:31,050 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:27:31,050 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:27:31,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2025-02-06 10:27:32,159 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a5cdfd193/ce561109d4bd459d8b9b6c96f7de76ec/FLAG5a15e921a [2025-02-06 10:27:32,385 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:27:32,386 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2025-02-06 10:27:32,400 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a5cdfd193/ce561109d4bd459d8b9b6c96f7de76ec/FLAG5a15e921a [2025-02-06 10:27:32,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a5cdfd193/ce561109d4bd459d8b9b6c96f7de76ec [2025-02-06 10:27:32,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:27:32,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:27:32,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:27:32,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:27:32,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:27:32,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bc9971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32, skipping insertion in model container [2025-02-06 10:27:32,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,457 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:27:32,681 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:27:32,729 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:27:32,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:27:32,756 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 10:27:32,765 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:27:32,798 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:27:32,809 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:27:32,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:27:32,820 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:27:32,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:27:32,884 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:27:32,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32 WrapperNode [2025-02-06 10:27:32,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:27:32,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:27:32,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:27:32,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:27:32,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,928 INFO L138 Inliner]: procedures = 169, calls = 79, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 64 [2025-02-06 10:27:32,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:27:32,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:27:32,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:27:32,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:27:32,935 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,938 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,946 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 4, 0]. 67 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 2 writes are split as follows [0, 2, 0]. [2025-02-06 10:27:32,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,953 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:27:32,965 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:27:32,965 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:27:32,965 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:27:32,966 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (1/1) ... [2025-02-06 10:27:32,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:27:32,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:32,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 10:27:32,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-02-06 10:27:33,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 10:27:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:27:33,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:27:33,122 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:27:33,124 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:27:33,154 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L527: havoc #t~malloc12.base, #t~malloc12.offset; [2025-02-06 10:27:33,273 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L758: havoc f6_#t~nondet42#1; [2025-02-06 10:27:33,273 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L761: havoc g6_#t~nondet43#1; [2025-02-06 10:27:33,289 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2025-02-06 10:27:33,291 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:27:33,298 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:27:33,299 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:27:33,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:27:33 BoogieIcfgContainer [2025-02-06 10:27:33,299 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:27:33,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:27:33,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:27:33,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:27:33,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:27:32" (1/3) ... [2025-02-06 10:27:33,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5122637a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:27:33, skipping insertion in model container [2025-02-06 10:27:33,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:27:32" (2/3) ... [2025-02-06 10:27:33,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5122637a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:27:33, skipping insertion in model container [2025-02-06 10:27:33,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:27:33" (3/3) ... [2025-02-06 10:27:33,307 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test6.i [2025-02-06 10:27:33,318 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:27:33,319 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test6.i that has 2 procedures, 43 locations, 1 initial locations, 0 loop locations, and 13 error locations. [2025-02-06 10:27:33,345 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:27:33,356 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;@60f707de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:27:33,356 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-02-06 10:27:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:33,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:27:33,364 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:33,364 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:33,364 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:33,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2019744773, now seen corresponding path program 1 times [2025-02-06 10:27:33,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:33,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037249269] [2025-02-06 10:27:33,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:33,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:33,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:33,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:33,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 10:27:33,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:27:33,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:27:33,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:33,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:33,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:27:33,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:33,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:33,511 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:33,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037249269] [2025-02-06 10:27:33,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037249269] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:33,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:33,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:27:33,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532575268] [2025-02-06 10:27:33,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:33,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:27:33,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:33,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:27:33,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:33,533 INFO L87 Difference]: Start difference. First operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 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) Second operand has 5 states, 5 states have (on average 2.0) 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) [2025-02-06 10:27:33,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:33,578 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2025-02-06 10:27:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:27:33,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) 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 [2025-02-06 10:27:33,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:33,585 INFO L225 Difference]: With dead ends: 58 [2025-02-06 10:27:33,585 INFO L226 Difference]: Without dead ends: 56 [2025-02-06 10:27:33,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:33,588 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:33,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 153 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:33,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-06 10:27:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2025-02-06 10:27:33,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 41 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2025-02-06 10:27:33,610 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 12 [2025-02-06 10:27:33,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:33,610 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2025-02-06 10:27:33,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) 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) [2025-02-06 10:27:33,610 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2025-02-06 10:27:33,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:27:33,611 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:33,611 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:33,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 10:27:33,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:33,813 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:33,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:33,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2019828143, now seen corresponding path program 1 times [2025-02-06 10:27:33,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:33,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381288557] [2025-02-06 10:27:33,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:33,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:33,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:33,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:33,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 10:27:33,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:27:33,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:27:33,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:33,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:33,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:27:33,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:33,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:33,915 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:33,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381288557] [2025-02-06 10:27:33,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381288557] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:33,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:33,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:27:33,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707910970] [2025-02-06 10:27:33,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:33,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:27:33,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:33,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:27:33,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:33,918 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 5 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) [2025-02-06 10:27:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:33,949 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2025-02-06 10:27:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:27:33,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 [2025-02-06 10:27:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:33,950 INFO L225 Difference]: With dead ends: 44 [2025-02-06 10:27:33,950 INFO L226 Difference]: Without dead ends: 44 [2025-02-06 10:27:33,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:33,951 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:33,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 140 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-06 10:27:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-02-06 10:27:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 40 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2025-02-06 10:27:33,954 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 12 [2025-02-06 10:27:33,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:33,954 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2025-02-06 10:27:33,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2025-02-06 10:27:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2025-02-06 10:27:33,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:27:33,954 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:33,954 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:33,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 10:27:34,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:34,156 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:34,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash -532412188, now seen corresponding path program 1 times [2025-02-06 10:27:34,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:34,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251486461] [2025-02-06 10:27:34,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:34,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:34,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:34,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:34,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 10:27:34,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:27:34,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:27:34,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:34,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:34,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:27:34,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:34,253 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:34,253 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:34,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251486461] [2025-02-06 10:27:34,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251486461] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:34,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:34,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:27:34,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451218270] [2025-02-06 10:27:34,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:34,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:27:34,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:34,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:27:34,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:34,254 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2025-02-06 10:27:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:34,283 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2025-02-06 10:27:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:27:34,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2025-02-06 10:27:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:34,284 INFO L225 Difference]: With dead ends: 46 [2025-02-06 10:27:34,284 INFO L226 Difference]: Without dead ends: 46 [2025-02-06 10:27:34,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:34,285 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 1 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:34,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 147 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:34,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-06 10:27:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-02-06 10:27:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 42 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2025-02-06 10:27:34,288 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 12 [2025-02-06 10:27:34,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:34,288 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2025-02-06 10:27:34,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2025-02-06 10:27:34,289 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2025-02-06 10:27:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:27:34,289 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:34,289 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:34,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 10:27:34,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:34,489 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:34,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash -532412167, now seen corresponding path program 1 times [2025-02-06 10:27:34,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:34,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689427119] [2025-02-06 10:27:34,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:34,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:34,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:34,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:34,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 10:27:34,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:27:34,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:27:34,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:34,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:34,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 10:27:34,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:34,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:34,639 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:34,639 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:34,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689427119] [2025-02-06 10:27:34,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689427119] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:34,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:34,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:27:34,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506911794] [2025-02-06 10:27:34,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:34,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:27:34,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:34,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:27:34,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:27:34,641 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2025-02-06 10:27:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:34,721 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2025-02-06 10:27:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:27:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2025-02-06 10:27:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:34,722 INFO L225 Difference]: With dead ends: 62 [2025-02-06 10:27:34,722 INFO L226 Difference]: Without dead ends: 62 [2025-02-06 10:27:34,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:34,723 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 33 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:34,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 79 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:27:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-06 10:27:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 49. [2025-02-06 10:27:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 45 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2025-02-06 10:27:34,726 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 12 [2025-02-06 10:27:34,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:34,726 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2025-02-06 10:27:34,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2025-02-06 10:27:34,726 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2025-02-06 10:27:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:27:34,726 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:34,727 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:34,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 10:27:34,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:34,927 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:34,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:34,928 INFO L85 PathProgramCache]: Analyzing trace with hash -532412166, now seen corresponding path program 1 times [2025-02-06 10:27:34,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:34,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097618972] [2025-02-06 10:27:34,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:34,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:34,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:34,930 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:34,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 10:27:34,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:27:34,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:27:34,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:34,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:34,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:27:34,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:35,101 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:35,101 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:35,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097618972] [2025-02-06 10:27:35,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097618972] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:35,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:35,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:27:35,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697634315] [2025-02-06 10:27:35,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:35,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:27:35,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:35,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:27:35,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:27:35,102 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2025-02-06 10:27:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:35,172 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2025-02-06 10:27:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:27:35,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2025-02-06 10:27:35,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:35,173 INFO L225 Difference]: With dead ends: 82 [2025-02-06 10:27:35,173 INFO L226 Difference]: Without dead ends: 82 [2025-02-06 10:27:35,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:35,174 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 35 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:35,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 145 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:27:35,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-02-06 10:27:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 69. [2025-02-06 10:27:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 65 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2025-02-06 10:27:35,178 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 12 [2025-02-06 10:27:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:35,178 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2025-02-06 10:27:35,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2025-02-06 10:27:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2025-02-06 10:27:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 10:27:35,179 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:35,179 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:35,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 10:27:35,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:35,380 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:35,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1809837010, now seen corresponding path program 1 times [2025-02-06 10:27:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:35,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551733699] [2025-02-06 10:27:35,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:35,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:35,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:35,382 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:35,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 10:27:35,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 10:27:35,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 10:27:35,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:35,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:35,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:27:35,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:35,460 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:35,460 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:35,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551733699] [2025-02-06 10:27:35,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551733699] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:35,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:35,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:27:35,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486133414] [2025-02-06 10:27:35,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:35,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:27:35,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:35,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:27:35,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:35,461 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:35,509 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2025-02-06 10:27:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:27:35,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2025-02-06 10:27:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:35,510 INFO L225 Difference]: With dead ends: 71 [2025-02-06 10:27:35,510 INFO L226 Difference]: Without dead ends: 71 [2025-02-06 10:27:35,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:35,510 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:35,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 129 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:35,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-06 10:27:35,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2025-02-06 10:27:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 65 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:35,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2025-02-06 10:27:35,514 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 13 [2025-02-06 10:27:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:35,514 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2025-02-06 10:27:35,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2025-02-06 10:27:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 10:27:35,514 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:35,514 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:35,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 10:27:35,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:35,719 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:35,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:35,719 INFO L85 PathProgramCache]: Analyzing trace with hash 677675823, now seen corresponding path program 1 times [2025-02-06 10:27:35,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:35,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697949380] [2025-02-06 10:27:35,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:35,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:35,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:35,721 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:35,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 10:27:35,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 10:27:35,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 10:27:35,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:35,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:35,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 10:27:35,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:35,805 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:35,805 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:35,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697949380] [2025-02-06 10:27:35,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697949380] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:35,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:35,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:27:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174874441] [2025-02-06 10:27:35,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:35,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:27:35,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:35,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:27:35,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:27:35,806 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:35,850 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2025-02-06 10:27:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:27:35,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2025-02-06 10:27:35,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:35,851 INFO L225 Difference]: With dead ends: 66 [2025-02-06 10:27:35,852 INFO L226 Difference]: Without dead ends: 65 [2025-02-06 10:27:35,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:27:35,852 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 15 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:35,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 223 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-06 10:27:35,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2025-02-06 10:27:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 49 states have (on average 1.530612244897959) internal successors, (75), 59 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2025-02-06 10:27:35,857 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 13 [2025-02-06 10:27:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:35,857 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2025-02-06 10:27:35,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2025-02-06 10:27:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:27:35,858 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:35,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:35,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 10:27:36,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:36,059 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:36,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:36,059 INFO L85 PathProgramCache]: Analyzing trace with hash -270372467, now seen corresponding path program 1 times [2025-02-06 10:27:36,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:36,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191560552] [2025-02-06 10:27:36,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:36,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:36,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:36,061 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:36,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 10:27:36,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:27:36,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:27:36,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:36,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:36,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 10:27:36,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:36,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:27:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:36,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:36,163 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:36,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191560552] [2025-02-06 10:27:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191560552] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:36,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:36,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:27:36,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341712384] [2025-02-06 10:27:36,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:36,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:27:36,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:36,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:27:36,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:36,164 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:36,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:36,214 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2025-02-06 10:27:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:27:36,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 14 [2025-02-06 10:27:36,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:36,215 INFO L225 Difference]: With dead ends: 64 [2025-02-06 10:27:36,215 INFO L226 Difference]: Without dead ends: 64 [2025-02-06 10:27:36,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:36,216 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:36,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 105 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:36,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-06 10:27:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2025-02-06 10:27:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 49 states have (on average 1.510204081632653) internal successors, (74), 58 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2025-02-06 10:27:36,218 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 14 [2025-02-06 10:27:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:36,218 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2025-02-06 10:27:36,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2025-02-06 10:27:36,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:27:36,219 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:36,219 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:36,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 10:27:36,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:36,424 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:36,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:36,424 INFO L85 PathProgramCache]: Analyzing trace with hash -270302926, now seen corresponding path program 1 times [2025-02-06 10:27:36,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:36,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092655658] [2025-02-06 10:27:36,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:36,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:36,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:36,426 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:36,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 10:27:36,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:27:36,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:27:36,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:36,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:36,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:27:36,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:36,560 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-02-06 10:27:36,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 10:27:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:36,596 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:36,596 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:36,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092655658] [2025-02-06 10:27:36,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092655658] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:36,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:36,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:27:36,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081167632] [2025-02-06 10:27:36,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:36,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:27:36,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:36,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:27:36,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:27:36,597 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:36,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:36,736 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2025-02-06 10:27:36,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:27:36,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 14 [2025-02-06 10:27:36,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:36,737 INFO L225 Difference]: With dead ends: 74 [2025-02-06 10:27:36,737 INFO L226 Difference]: Without dead ends: 74 [2025-02-06 10:27:36,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:27:36,738 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 42 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:36,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 128 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:27:36,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-02-06 10:27:36,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2025-02-06 10:27:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.469387755102041) internal successors, (72), 57 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2025-02-06 10:27:36,744 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 14 [2025-02-06 10:27:36,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:36,744 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2025-02-06 10:27:36,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2025-02-06 10:27:36,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:27:36,746 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:36,746 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:36,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 10:27:36,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:36,947 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:36,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:36,947 INFO L85 PathProgramCache]: Analyzing trace with hash -270302925, now seen corresponding path program 1 times [2025-02-06 10:27:36,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:36,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270764290] [2025-02-06 10:27:36,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:36,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:36,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:36,949 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:36,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 10:27:36,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:27:36,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:27:36,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:36,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:36,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 10:27:36,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:37,076 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 [2025-02-06 10:27:37,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:27:37,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:27:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:37,167 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:37,167 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:37,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270764290] [2025-02-06 10:27:37,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270764290] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:37,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:37,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:27:37,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110844502] [2025-02-06 10:27:37,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:37,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:27:37,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:37,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:27:37,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2025-02-06 10:27:37,168 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:37,319 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2025-02-06 10:27:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:27:37,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 14 [2025-02-06 10:27:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:37,320 INFO L225 Difference]: With dead ends: 72 [2025-02-06 10:27:37,320 INFO L226 Difference]: Without dead ends: 72 [2025-02-06 10:27:37,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2025-02-06 10:27:37,321 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 47 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:37,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 110 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 85 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2025-02-06 10:27:37,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-02-06 10:27:37,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2025-02-06 10:27:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 55 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:37,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2025-02-06 10:27:37,324 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 14 [2025-02-06 10:27:37,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:37,324 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2025-02-06 10:27:37,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:37,324 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2025-02-06 10:27:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:27:37,325 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:37,325 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:37,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 10:27:37,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:37,526 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:37,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash -546985001, now seen corresponding path program 1 times [2025-02-06 10:27:37,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:37,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997097454] [2025-02-06 10:27:37,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:37,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:37,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:37,528 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:37,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 10:27:37,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:27:37,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:27:37,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:37,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:37,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:27:37,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:37,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:37,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:37,607 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:37,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997097454] [2025-02-06 10:27:37,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997097454] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:37,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:37,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:27:37,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386394457] [2025-02-06 10:27:37,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:37,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:27:37,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:37,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:27:37,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:27:37,610 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:37,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:37,648 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2025-02-06 10:27:37,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:27:37,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 14 [2025-02-06 10:27:37,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:37,649 INFO L225 Difference]: With dead ends: 67 [2025-02-06 10:27:37,649 INFO L226 Difference]: Without dead ends: 62 [2025-02-06 10:27:37,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:27:37,650 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 16 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:37,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 116 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:37,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-06 10:27:37,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2025-02-06 10:27:37,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.391304347826087) internal successors, (64), 53 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2025-02-06 10:27:37,656 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 14 [2025-02-06 10:27:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:37,656 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2025-02-06 10:27:37,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:37,656 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2025-02-06 10:27:37,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 10:27:37,656 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:37,656 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:37,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 10:27:37,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:37,858 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:37,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:37,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1602491415, now seen corresponding path program 1 times [2025-02-06 10:27:37,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:37,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478503009] [2025-02-06 10:27:37,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:37,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:37,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:37,861 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:37,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 10:27:37,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:27:37,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:27:37,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:37,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:37,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:27:37,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:37,928 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:37,929 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:37,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478503009] [2025-02-06 10:27:37,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478503009] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:37,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:37,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:27:37,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022949212] [2025-02-06 10:27:37,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:37,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:27:37,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:37,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:27:37,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:37,930 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:37,946 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2025-02-06 10:27:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:27:37,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2025-02-06 10:27:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:37,946 INFO L225 Difference]: With dead ends: 57 [2025-02-06 10:27:37,946 INFO L226 Difference]: Without dead ends: 57 [2025-02-06 10:27:37,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:37,947 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:37,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-02-06 10:27:37,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-02-06 10:27:37,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 53 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2025-02-06 10:27:37,949 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 17 [2025-02-06 10:27:37,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:37,949 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2025-02-06 10:27:37,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2025-02-06 10:27:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 10:27:37,949 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:37,949 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:37,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 10:27:38,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:38,153 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:38,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:38,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1602491394, now seen corresponding path program 1 times [2025-02-06 10:27:38,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:38,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294563114] [2025-02-06 10:27:38,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:38,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:38,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:38,155 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:38,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 10:27:38,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:27:38,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:27:38,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:38,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:38,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:27:38,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:38,261 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-02-06 10:27:38,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 10:27:38,330 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 [2025-02-06 10:27:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:38,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:38,340 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:38,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294563114] [2025-02-06 10:27:38,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294563114] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:38,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:38,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:27:38,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635447637] [2025-02-06 10:27:38,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:38,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:27:38,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:38,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:27:38,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:27:38,341 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:38,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:38,433 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2025-02-06 10:27:38,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:27:38,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2025-02-06 10:27:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:38,434 INFO L225 Difference]: With dead ends: 62 [2025-02-06 10:27:38,434 INFO L226 Difference]: Without dead ends: 62 [2025-02-06 10:27:38,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:27:38,435 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:38,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 98 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:27:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-06 10:27:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2025-02-06 10:27:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 54 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2025-02-06 10:27:38,439 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 17 [2025-02-06 10:27:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:38,439 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2025-02-06 10:27:38,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:38,439 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2025-02-06 10:27:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 10:27:38,440 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:38,440 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:38,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 10:27:38,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:38,640 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:38,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1602491393, now seen corresponding path program 1 times [2025-02-06 10:27:38,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:38,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683633359] [2025-02-06 10:27:38,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:38,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:38,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:38,642 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:38,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 10:27:38,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:27:38,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:27:38,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:38,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:38,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 10:27:38,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:38,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:27:38,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:27:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:38,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:38,847 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:38,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683633359] [2025-02-06 10:27:38,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683633359] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:38,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:38,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:27:38,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569551519] [2025-02-06 10:27:38,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:38,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:27:38,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:38,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:27:38,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:27:38,849 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:39,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:39,034 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2025-02-06 10:27:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:27:39,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2025-02-06 10:27:39,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:39,035 INFO L225 Difference]: With dead ends: 57 [2025-02-06 10:27:39,035 INFO L226 Difference]: Without dead ends: 57 [2025-02-06 10:27:39,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:27:39,035 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 35 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:39,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 76 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:27:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-02-06 10:27:39,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2025-02-06 10:27:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.25) internal successors, (50), 46 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2025-02-06 10:27:39,037 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 17 [2025-02-06 10:27:39,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:39,037 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2025-02-06 10:27:39,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2025-02-06 10:27:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:27:39,038 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:39,038 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:39,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 10:27:39,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:39,238 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:39,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1660708230, now seen corresponding path program 1 times [2025-02-06 10:27:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:39,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727767376] [2025-02-06 10:27:39,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:39,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:39,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:39,241 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:39,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 10:27:39,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:27:39,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:27:39,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:39,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:39,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:27:39,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:39,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:39,340 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:39,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727767376] [2025-02-06 10:27:39,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727767376] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:39,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:39,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:27:39,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666329604] [2025-02-06 10:27:39,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:39,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:27:39,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:39,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:27:39,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:39,341 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:39,398 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2025-02-06 10:27:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:27:39,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2025-02-06 10:27:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:39,399 INFO L225 Difference]: With dead ends: 50 [2025-02-06 10:27:39,399 INFO L226 Difference]: Without dead ends: 50 [2025-02-06 10:27:39,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:27:39,400 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:39,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 66 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:39,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-06 10:27:39,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2025-02-06 10:27:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.225) internal successors, (49), 45 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:39,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2025-02-06 10:27:39,402 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 18 [2025-02-06 10:27:39,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:39,402 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2025-02-06 10:27:39,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2025-02-06 10:27:39,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:27:39,402 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:39,402 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:39,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 10:27:39,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:39,607 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:39,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:39,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1660708231, now seen corresponding path program 1 times [2025-02-06 10:27:39,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:39,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070849736] [2025-02-06 10:27:39,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:39,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:39,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:39,610 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:39,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 10:27:39,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:27:39,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:27:39,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:39,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:39,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 10:27:39,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:39,735 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:39,735 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070849736] [2025-02-06 10:27:39,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070849736] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:39,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:39,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:27:39,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513353320] [2025-02-06 10:27:39,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:39,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:27:39,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:39,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:27:39,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:27:39,736 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:39,800 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2025-02-06 10:27:39,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:27:39,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2025-02-06 10:27:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:39,801 INFO L225 Difference]: With dead ends: 49 [2025-02-06 10:27:39,801 INFO L226 Difference]: Without dead ends: 49 [2025-02-06 10:27:39,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:27:39,802 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 50 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:39,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 101 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-06 10:27:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2025-02-06 10:27:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.2) internal successors, (48), 44 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2025-02-06 10:27:39,803 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 18 [2025-02-06 10:27:39,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:39,804 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2025-02-06 10:27:39,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2025-02-06 10:27:39,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 10:27:39,804 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:39,804 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:39,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 10:27:40,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:40,008 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:40,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:40,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1899028892, now seen corresponding path program 1 times [2025-02-06 10:27:40,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:40,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15950394] [2025-02-06 10:27:40,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:40,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:40,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:40,011 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:40,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 10:27:40,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 10:27:40,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 10:27:40,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:40,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:40,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:27:40,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:40,132 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_probe1_6_~p~0#1.base_13| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_probe1_6_~p~0#1.base_13|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_probe1_6_~p~0#1.base_13| (_ bv0 1))))) is different from true [2025-02-06 10:27:40,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:40,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:40,158 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:40,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15950394] [2025-02-06 10:27:40,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15950394] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:40,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:40,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 10:27:40,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435605413] [2025-02-06 10:27:40,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:40,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:27:40,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:40,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:27:40,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=32, Unknown=1, NotChecked=10, Total=56 [2025-02-06 10:27:40,159 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:40,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:40,275 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2025-02-06 10:27:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:27:40,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 19 [2025-02-06 10:27:40,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:40,276 INFO L225 Difference]: With dead ends: 58 [2025-02-06 10:27:40,276 INFO L226 Difference]: Without dead ends: 50 [2025-02-06 10:27:40,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2025-02-06 10:27:40,276 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:40,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 177 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2025-02-06 10:27:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-06 10:27:40,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2025-02-06 10:27:40,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2025-02-06 10:27:40,278 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 19 [2025-02-06 10:27:40,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:40,278 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2025-02-06 10:27:40,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:40,278 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2025-02-06 10:27:40,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 10:27:40,278 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:40,278 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:40,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-06 10:27:40,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:40,484 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:40,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:40,485 INFO L85 PathProgramCache]: Analyzing trace with hash -57652436, now seen corresponding path program 1 times [2025-02-06 10:27:40,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:40,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969819475] [2025-02-06 10:27:40,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:40,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:40,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:40,487 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:40,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 10:27:40,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 10:27:40,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 10:27:40,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:40,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:40,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 10:27:40,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:40,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 10:27:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:40,656 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:40,656 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:40,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969819475] [2025-02-06 10:27:40,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969819475] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:40,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:40,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:27:40,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438161082] [2025-02-06 10:27:40,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:40,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:27:40,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:40,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:27:40,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:27:40,657 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:40,777 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2025-02-06 10:27:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:27:40,778 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 19 [2025-02-06 10:27:40,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:40,778 INFO L225 Difference]: With dead ends: 42 [2025-02-06 10:27:40,778 INFO L226 Difference]: Without dead ends: 42 [2025-02-06 10:27:40,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:27:40,778 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:40,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 89 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:27:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-06 10:27:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2025-02-06 10:27:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 38 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2025-02-06 10:27:40,780 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 19 [2025-02-06 10:27:40,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:40,780 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2025-02-06 10:27:40,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2025-02-06 10:27:40,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-06 10:27:40,780 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:40,780 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:40,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-06 10:27:40,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:40,981 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:40,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:40,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1787225532, now seen corresponding path program 1 times [2025-02-06 10:27:40,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:40,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324198990] [2025-02-06 10:27:40,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:40,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:40,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:40,983 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:40,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 10:27:41,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 10:27:41,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 10:27:41,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:41,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:41,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:27:41,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:41,143 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 [2025-02-06 10:27:41,172 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 15 treesize of output 7 [2025-02-06 10:27:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:41,184 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:41,184 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:41,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324198990] [2025-02-06 10:27:41,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324198990] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:41,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:41,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:27:41,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223118099] [2025-02-06 10:27:41,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:41,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:27:41,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:41,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:27:41,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:27:41,185 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:41,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:41,336 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2025-02-06 10:27:41,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:27:41,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 20 [2025-02-06 10:27:41,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:41,337 INFO L225 Difference]: With dead ends: 41 [2025-02-06 10:27:41,337 INFO L226 Difference]: Without dead ends: 41 [2025-02-06 10:27:41,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:27:41,338 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:41,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 66 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:27:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-06 10:27:41,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-02-06 10:27:41,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 37 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:41,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2025-02-06 10:27:41,339 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 20 [2025-02-06 10:27:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:41,339 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2025-02-06 10:27:41,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:41,339 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2025-02-06 10:27:41,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-06 10:27:41,339 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:41,339 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:41,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 10:27:41,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:41,540 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:41,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1787205639, now seen corresponding path program 1 times [2025-02-06 10:27:41,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:41,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686530856] [2025-02-06 10:27:41,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:41,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:41,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:41,543 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:41,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 10:27:41,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 10:27:41,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 10:27:41,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:41,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:41,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 10:27:41,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:41,598 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:41,599 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:41,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686530856] [2025-02-06 10:27:41,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686530856] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:41,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:41,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:27:41,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58274130] [2025-02-06 10:27:41,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:41,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:27:41,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:41,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:27:41,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:27:41,600 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:41,607 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2025-02-06 10:27:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:27:41,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 20 [2025-02-06 10:27:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:41,608 INFO L225 Difference]: With dead ends: 40 [2025-02-06 10:27:41,608 INFO L226 Difference]: Without dead ends: 40 [2025-02-06 10:27:41,608 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 [2025-02-06 10:27:41,608 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:41,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-02-06 10:27:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2025-02-06 10:27:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2025-02-06 10:27:41,609 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 20 [2025-02-06 10:27:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:41,610 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2025-02-06 10:27:41,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:41,610 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2025-02-06 10:27:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:27:41,610 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:41,610 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:41,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-06 10:27:41,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:41,811 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:41,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash 430583338, now seen corresponding path program 1 times [2025-02-06 10:27:41,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:41,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625065037] [2025-02-06 10:27:41,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:41,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:41,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:41,814 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:41,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 10:27:41,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:27:41,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:27:41,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:41,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:41,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 10:27:41,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:41,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:27:41,980 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 [2025-02-06 10:27:42,006 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 [2025-02-06 10:27:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:42,022 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:42,022 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:42,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625065037] [2025-02-06 10:27:42,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625065037] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:42,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:42,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:27:42,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882262335] [2025-02-06 10:27:42,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:42,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:27:42,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:42,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:27:42,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:27:42,023 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:42,127 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2025-02-06 10:27:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:27:42,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 21 [2025-02-06 10:27:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:42,128 INFO L225 Difference]: With dead ends: 44 [2025-02-06 10:27:42,128 INFO L226 Difference]: Without dead ends: 44 [2025-02-06 10:27:42,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:27:42,129 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:42,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 88 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:27:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-06 10:27:42,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-02-06 10:27:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 40 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2025-02-06 10:27:42,130 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 21 [2025-02-06 10:27:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:42,130 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2025-02-06 10:27:42,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2025-02-06 10:27:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:27:42,130 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:42,130 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:42,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-06 10:27:42,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:42,331 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:42,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:42,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1783893035, now seen corresponding path program 1 times [2025-02-06 10:27:42,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:42,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404273397] [2025-02-06 10:27:42,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:42,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:42,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:42,334 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:42,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-06 10:27:42,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:27:42,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:27:42,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:42,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:42,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:27:42,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:42,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 10:27:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:42,483 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:42,483 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:42,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404273397] [2025-02-06 10:27:42,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404273397] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:42,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:42,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:27:42,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127480998] [2025-02-06 10:27:42,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:42,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:27:42,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:42,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:27:42,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:27:42,484 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:42,638 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2025-02-06 10:27:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:27:42,641 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 21 [2025-02-06 10:27:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:42,642 INFO L225 Difference]: With dead ends: 46 [2025-02-06 10:27:42,642 INFO L226 Difference]: Without dead ends: 46 [2025-02-06 10:27:42,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:27:42,643 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:42,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 182 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:27:42,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-06 10:27:42,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 27. [2025-02-06 10:27:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2025-02-06 10:27:42,644 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2025-02-06 10:27:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:42,644 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2025-02-06 10:27:42,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2025-02-06 10:27:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-06 10:27:42,645 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:42,645 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:42,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-06 10:27:42,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:42,845 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:42,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:42,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1473726791, now seen corresponding path program 1 times [2025-02-06 10:27:42,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:42,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637546899] [2025-02-06 10:27:42,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:42,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:42,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:42,849 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:42,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-06 10:27:42,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 10:27:42,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 10:27:42,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:42,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:42,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 10:27:42,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:42,968 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:27:42,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 10:27:43,068 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 [2025-02-06 10:27:43,131 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 [2025-02-06 10:27:43,163 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 [2025-02-06 10:27:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:43,168 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:43,169 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:43,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637546899] [2025-02-06 10:27:43,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637546899] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:43,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:43,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 10:27:43,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182915732] [2025-02-06 10:27:43,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:43,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:27:43,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:43,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:27:43,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:27:43,170 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:43,374 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2025-02-06 10:27:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:27:43,375 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 23 [2025-02-06 10:27:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:43,376 INFO L225 Difference]: With dead ends: 48 [2025-02-06 10:27:43,376 INFO L226 Difference]: Without dead ends: 48 [2025-02-06 10:27:43,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:27:43,376 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 64 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:43,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 99 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:27:43,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-02-06 10:27:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2025-02-06 10:27:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:27:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2025-02-06 10:27:43,378 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 23 [2025-02-06 10:27:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:43,378 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2025-02-06 10:27:43,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2025-02-06 10:27:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-06 10:27:43,378 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:43,378 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:43,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-06 10:27:43,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:43,579 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:43,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash 629254920, now seen corresponding path program 1 times [2025-02-06 10:27:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403359653] [2025-02-06 10:27:43,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:43,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:43,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:43,582 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:43,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-06 10:27:43,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 10:27:43,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 10:27:43,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:43,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:43,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:27:43,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:43,656 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:43,656 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403359653] [2025-02-06 10:27:43,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403359653] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:43,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:43,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:27:43,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379900691] [2025-02-06 10:27:43,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:43,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:27:43,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:43,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:27:43,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:43,657 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:43,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:43,669 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2025-02-06 10:27:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:27:43,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 23 [2025-02-06 10:27:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:43,670 INFO L225 Difference]: With dead ends: 30 [2025-02-06 10:27:43,670 INFO L226 Difference]: Without dead ends: 26 [2025-02-06 10:27:43,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:27:43,670 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:43,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-02-06 10:27:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-02-06 10:27:43,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.0) internal successors, (23), 23 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:43,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2025-02-06 10:27:43,671 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 23 [2025-02-06 10:27:43,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:43,671 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2025-02-06 10:27:43,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:43,672 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2025-02-06 10:27:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-06 10:27:43,672 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:43,672 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:43,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-02-06 10:27:43,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:43,872 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-02-06 10:27:43,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:43,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1087762267, now seen corresponding path program 1 times [2025-02-06 10:27:43,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:43,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092161060] [2025-02-06 10:27:43,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:43,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:43,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:43,875 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:43,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-06 10:27:43,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 10:27:43,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 10:27:43,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:43,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:43,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 10:27:43,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:44,051 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 [2025-02-06 10:27:44,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2025-02-06 10:27:44,149 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_10| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_10| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_10|)))) is different from true [2025-02-06 10:27:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:44,162 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:44,162 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:44,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092161060] [2025-02-06 10:27:44,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092161060] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:44,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:44,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 10:27:44,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273188308] [2025-02-06 10:27:44,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:44,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:27:44,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:44,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:27:44,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=74, Unknown=1, NotChecked=16, Total=110 [2025-02-06 10:27:44,163 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:44,358 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2025-02-06 10:27:44,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:27:44,359 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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 25 [2025-02-06 10:27:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:44,359 INFO L225 Difference]: With dead ends: 25 [2025-02-06 10:27:44,359 INFO L226 Difference]: Without dead ends: 0 [2025-02-06 10:27:44,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2025-02-06 10:27:44,360 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:44,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 78 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2025-02-06 10:27:44,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-06 10:27:44,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-06 10:27:44,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:27:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-06 10:27:44,360 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2025-02-06 10:27:44,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:44,360 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 10:27:44,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:27:44,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-06 10:27:44,361 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-06 10:27:44,362 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2025-02-06 10:27:44,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2025-02-06 10:27:44,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2025-02-06 10:27:44,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (9 of 13 remaining) [2025-02-06 10:27:44,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 13 remaining) [2025-02-06 10:27:44,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (7 of 13 remaining) [2025-02-06 10:27:44,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2025-02-06 10:27:44,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2025-02-06 10:27:44,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (4 of 13 remaining) [2025-02-06 10:27:44,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (3 of 13 remaining) [2025-02-06 10:27:44,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (2 of 13 remaining) [2025-02-06 10:27:44,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2025-02-06 10:27:44,364 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2025-02-06 10:27:44,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-06 10:27:44,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:44,567 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:44,568 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 10:27:44,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 10:27:44 BoogieIcfgContainer [2025-02-06 10:27:44,570 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 10:27:44,571 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 10:27:44,571 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 10:27:44,571 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 10:27:44,571 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:27:33" (3/4) ... [2025-02-06 10:27:44,573 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 10:27:44,577 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2025-02-06 10:27:44,579 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-02-06 10:27:44,579 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-06 10:27:44,579 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-06 10:27:44,635 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 10:27:44,635 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 10:27:44,635 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 10:27:44,636 INFO L158 Benchmark]: Toolchain (without parser) took 12218.66ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 58.0MB in the beginning and 46.7MB in the end (delta: 11.3MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2025-02-06 10:27:44,636 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 61.7MB in the beginning and 61.6MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:27:44,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.30ms. Allocated memory is still 83.9MB. Free memory was 58.0MB in the beginning and 30.4MB in the end (delta: 27.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:27:44,636 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.37ms. Allocated memory is still 83.9MB. Free memory was 30.4MB in the beginning and 28.5MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 10:27:44,637 INFO L158 Benchmark]: Boogie Preprocessor took 30.62ms. Allocated memory is still 83.9MB. Free memory was 28.2MB in the beginning and 26.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:27:44,637 INFO L158 Benchmark]: IcfgBuilder took 334.29ms. Allocated memory is still 83.9MB. Free memory was 26.3MB in the beginning and 48.7MB in the end (delta: -22.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2025-02-06 10:27:44,637 INFO L158 Benchmark]: TraceAbstraction took 11269.47ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 48.2MB in the beginning and 53.0MB in the end (delta: -4.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2025-02-06 10:27:44,640 INFO L158 Benchmark]: Witness Printer took 64.76ms. Allocated memory is still 100.7MB. Free memory was 53.0MB in the beginning and 46.7MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 10:27:44,641 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 61.7MB in the beginning and 61.6MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.30ms. Allocated memory is still 83.9MB. Free memory was 58.0MB in the beginning and 30.4MB in the end (delta: 27.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.37ms. Allocated memory is still 83.9MB. Free memory was 30.4MB in the beginning and 28.5MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.62ms. Allocated memory is still 83.9MB. Free memory was 28.2MB in the beginning and 26.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 334.29ms. Allocated memory is still 83.9MB. Free memory was 26.3MB in the beginning and 48.7MB in the end (delta: -22.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 11269.47ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 48.2MB in the beginning and 53.0MB in the end (delta: -4.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Witness Printer took 64.76ms. Allocated memory is still 100.7MB. Free memory was 53.0MB in the beginning and 46.7MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 791]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 11.2s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 552 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 551 mSDsluCounter, 2899 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 138 IncrementalHoareTripleChecker+Unchecked, 2051 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1477 IncrementalHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 848 mSDtfsCounter, 1477 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 443 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, InterpolantAutomatonStates: 163, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 25 MinimizatonAttempts, 128 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 395 ConstructedInterpolants, 15 QuantifiedInterpolants, 2914 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1585 ConjunctsInSsa, 235 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 10:27:44,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE