./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:29:35,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:29:36,000 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:29:36,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:29:36,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:29:36,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:29:36,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:29:36,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:29:36,017 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:29:36,017 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:29:36,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:29:36,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:29:36,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:29:36,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:29:36,018 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:29:36,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:29:36,018 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:29:36,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:29:36,018 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:29:36,018 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:29:36,018 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:29:36,018 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:29:36,018 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:29:36,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:29:36,018 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:29:36,019 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:29:36,019 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:29:36,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:29:36,019 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 [2025-01-10 00:29:36,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:29:36,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:29:36,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:29:36,219 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:29:36,220 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:29:36,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2025-01-10 00:29:37,375 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c549b32a/a82ffcbfa93c4817b66b6d8aa7a75e9d/FLAG9c43b444c [2025-01-10 00:29:37,777 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:29:37,777 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2025-01-10 00:29:37,797 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c549b32a/a82ffcbfa93c4817b66b6d8aa7a75e9d/FLAG9c43b444c [2025-01-10 00:29:37,949 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c549b32a/a82ffcbfa93c4817b66b6d8aa7a75e9d [2025-01-10 00:29:37,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:29:37,952 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:29:37,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:29:37,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:29:37,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:29:37,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:29:37" (1/1) ... [2025-01-10 00:29:37,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e206d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:37, skipping insertion in model container [2025-01-10 00:29:37,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:29:37" (1/1) ... [2025-01-10 00:29:37,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:29:38,317 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,351 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,354 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,357 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,362 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,397 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,397 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,398 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,398 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,400 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,401 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,401 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,402 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,404 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:38,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:29:38,418 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-01-10 00:29:38,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@591cf810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:38, skipping insertion in model container [2025-01-10 00:29:38,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:29:38,419 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-10 00:29:38,420 INFO L158 Benchmark]: Toolchain (without parser) took 467.28ms. Allocated memory is still 142.6MB. Free memory was 108.0MB in the beginning and 85.6MB in the end (delta: 22.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 00:29:38,420 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:29:38,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.65ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 85.6MB in the end (delta: 21.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 00:29:38,423 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.65ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 85.6MB in the end (delta: 21.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1001]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:29:40,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:29:40,389 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 00:29:40,393 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:29:40,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:29:40,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:29:40,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:29:40,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:29:40,411 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:29:40,411 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:29:40,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:29:40,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:29:40,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:29:40,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:29:40,412 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:29:40,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:29:40,412 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:29:40,412 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:29:40,412 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:29:40,412 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:29:40,412 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:29:40,413 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:29:40,413 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:29:40,413 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:29:40,413 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:29:40,413 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 00:29:40,413 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 00:29:40,413 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:29:40,413 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:29:40,413 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:29:40,413 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:29:40,413 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:29:40,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:29:40,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:29:40,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:29:40,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:29:40,414 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 -> ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 [2025-01-10 00:29:40,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:29:40,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:29:40,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:29:40,673 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:29:40,673 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:29:40,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2025-01-10 00:29:41,877 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d151a0fda/b26adabf519e4a7f8bbb0f0e1e67d3c3/FLAG3d8534d15 [2025-01-10 00:29:42,263 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:29:42,264 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2025-01-10 00:29:42,279 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d151a0fda/b26adabf519e4a7f8bbb0f0e1e67d3c3/FLAG3d8534d15 [2025-01-10 00:29:42,469 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d151a0fda/b26adabf519e4a7f8bbb0f0e1e67d3c3 [2025-01-10 00:29:42,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:29:42,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:29:42,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:29:42,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:29:42,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:29:42,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:29:42" (1/1) ... [2025-01-10 00:29:42,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ce1051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:42, skipping insertion in model container [2025-01-10 00:29:42,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:29:42" (1/1) ... [2025-01-10 00:29:42,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:29:42,830 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,864 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,868 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,872 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,880 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,921 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,923 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,924 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,925 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,927 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,928 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,928 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,929 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,933 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:42,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:29:42,956 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-10 00:29:42,968 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:29:43,009 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,025 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,030 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,032 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,037 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,054 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,055 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,057 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,057 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,059 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,060 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,063 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,064 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,065 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:43,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:29:43,076 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:29:43,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:29:43,259 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:29:43,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43 WrapperNode [2025-01-10 00:29:43,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:29:43,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:29:43,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:29:43,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:29:43,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,301 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,341 INFO L138 Inliner]: procedures = 286, calls = 300, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1033 [2025-01-10 00:29:43,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:29:43,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:29:43,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:29:43,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:29:43,348 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,417 INFO L175 MemorySlicer]: Split 268 memory accesses to 4 slices as follows [2, 220, 12, 34]. 82 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 10, 0]. The 54 writes are split as follows [0, 49, 1, 4]. [2025-01-10 00:29:43,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,455 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:29:43,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:29:43,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:29:43,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:29:43,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (1/1) ... [2025-01-10 00:29:43,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:29:43,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:43,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 00:29:43,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 00:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-01-10 00:29:43,547 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-01-10 00:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-01-10 00:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-01-10 00:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-01-10 00:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2025-01-10 00:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-10 00:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-01-10 00:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-01-10 00:29:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2025-01-10 00:29:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 00:29:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2025-01-10 00:29:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2025-01-10 00:29:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2025-01-10 00:29:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2025-01-10 00:29:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2025-01-10 00:29:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-10 00:29:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-10 00:29:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 00:29:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:29:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2025-01-10 00:29:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2025-01-10 00:29:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-10 00:29:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-10 00:29:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-10 00:29:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-01-10 00:29:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2025-01-10 00:29:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2025-01-10 00:29:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:29:43,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:29:43,773 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:29:43,774 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:29:46,277 INFO L? ?]: Removed 1086 outVars from TransFormulas that were not future-live. [2025-01-10 00:29:46,277 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:29:46,303 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:29:46,306 INFO L312 CfgBuilder]: Removed 31 assume(true) statements. [2025-01-10 00:29:46,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:29:46 BoogieIcfgContainer [2025-01-10 00:29:46,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:29:46,308 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:29:46,308 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:29:46,312 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:29:46,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:29:42" (1/3) ... [2025-01-10 00:29:46,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513cb781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:29:46, skipping insertion in model container [2025-01-10 00:29:46,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:43" (2/3) ... [2025-01-10 00:29:46,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513cb781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:29:46, skipping insertion in model container [2025-01-10 00:29:46,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:29:46" (3/3) ... [2025-01-10 00:29:46,315 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-1.i [2025-01-10 00:29:46,325 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:29:46,326 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test6-1.i that has 6 procedures, 1083 locations, 1 initial locations, 36 loop locations, and 522 error locations. [2025-01-10 00:29:46,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:29:46,375 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;@46b2890e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:29:46,375 INFO L334 AbstractCegarLoop]: Starting to check reachability of 522 error locations. [2025-01-10 00:29:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 1083 states, 538 states have (on average 2.193308550185874) internal successors, (1180), 1063 states have internal predecessors, (1180), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-01-10 00:29:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-01-10 00:29:46,381 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:46,382 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-01-10 00:29:46,382 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:29:46,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:46,385 INFO L85 PathProgramCache]: Analyzing trace with hash 85465, now seen corresponding path program 1 times [2025-01-10 00:29:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057226200] [2025-01-10 00:29:46,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:46,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:46,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:46,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:29:46,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 00:29:46,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:29:46,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:29:46,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:46,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:46,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:29:46,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:46,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:29:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:46,573 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:46,573 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:46,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057226200] [2025-01-10 00:29:46,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057226200] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:46,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:46,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:29:46,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313332007] [2025-01-10 00:29:46,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:46,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:29:46,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:46,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:29:46,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:46,594 INFO L87 Difference]: Start difference. First operand has 1083 states, 538 states have (on average 2.193308550185874) internal successors, (1180), 1063 states have internal predecessors, (1180), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:47,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:47,658 INFO L93 Difference]: Finished difference Result 1163 states and 1233 transitions. [2025-01-10 00:29:47,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:29:47,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-01-10 00:29:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:47,669 INFO L225 Difference]: With dead ends: 1163 [2025-01-10 00:29:47,669 INFO L226 Difference]: Without dead ends: 1161 [2025-01-10 00:29:47,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:47,672 INFO L435 NwaCegarLoop]: 794 mSDtfsCounter, 719 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:47,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1039 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-10 00:29:47,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2025-01-10 00:29:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1104. [2025-01-10 00:29:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 574 states have (on average 2.0609756097560976) internal successors, (1183), 1086 states have internal predecessors, (1183), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:29:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1213 transitions. [2025-01-10 00:29:47,725 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1213 transitions. Word has length 3 [2025-01-10 00:29:47,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:47,725 INFO L471 AbstractCegarLoop]: Abstraction has 1104 states and 1213 transitions. [2025-01-10 00:29:47,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1213 transitions. [2025-01-10 00:29:47,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-01-10 00:29:47,725 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:47,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-01-10 00:29:47,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 00:29:47,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:47,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:29:47,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash 85466, now seen corresponding path program 1 times [2025-01-10 00:29:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:47,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138577101] [2025-01-10 00:29:47,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:47,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:47,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:47,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:29:47,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 00:29:48,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:29:48,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:29:48,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:48,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:48,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:29:48,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:48,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:29:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:48,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:48,040 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:48,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138577101] [2025-01-10 00:29:48,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138577101] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:48,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:48,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:29:48,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899629543] [2025-01-10 00:29:48,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:48,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:29:48,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:48,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:29:48,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:48,041 INFO L87 Difference]: Start difference. First operand 1104 states and 1213 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:49,658 INFO L93 Difference]: Finished difference Result 1508 states and 1654 transitions. [2025-01-10 00:29:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:29:49,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-01-10 00:29:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:49,663 INFO L225 Difference]: With dead ends: 1508 [2025-01-10 00:29:49,663 INFO L226 Difference]: Without dead ends: 1508 [2025-01-10 00:29:49,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:49,664 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 428 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:49,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1534 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-01-10 00:29:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2025-01-10 00:29:49,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1316. [2025-01-10 00:29:49,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 785 states have (on average 2.0471337579617837) internal successors, (1607), 1296 states have internal predecessors, (1607), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-01-10 00:29:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1641 transitions. [2025-01-10 00:29:49,694 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1641 transitions. Word has length 3 [2025-01-10 00:29:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:49,694 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1641 transitions. [2025-01-10 00:29:49,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1641 transitions. [2025-01-10 00:29:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-10 00:29:49,695 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:49,695 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:49,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 00:29:49,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:49,896 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:29:49,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1875000221, now seen corresponding path program 1 times [2025-01-10 00:29:49,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:49,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69989199] [2025-01-10 00:29:49,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:49,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:49,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:49,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:29:49,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 00:29:49,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:29:50,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:29:50,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:50,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:50,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 00:29:50,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:50,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:29:50,117 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-01-10 00:29:50,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2025-01-10 00:29:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:50,223 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:50,223 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:50,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69989199] [2025-01-10 00:29:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69989199] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:50,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:50,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:29:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506792847] [2025-01-10 00:29:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:50,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:29:50,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:50,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:29:50,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:50,224 INFO L87 Difference]: Start difference. First operand 1316 states and 1641 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:53,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:53,449 INFO L93 Difference]: Finished difference Result 2198 states and 2399 transitions. [2025-01-10 00:29:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:29:53,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-01-10 00:29:53,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:53,462 INFO L225 Difference]: With dead ends: 2198 [2025-01-10 00:29:53,462 INFO L226 Difference]: Without dead ends: 2198 [2025-01-10 00:29:53,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:53,462 INFO L435 NwaCegarLoop]: 1051 mSDtfsCounter, 1149 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:53,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 2233 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-01-10 00:29:53,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2025-01-10 00:29:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 1465. [2025-01-10 00:29:53,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 934 states have (on average 2.0278372591006426) internal successors, (1894), 1445 states have internal predecessors, (1894), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-01-10 00:29:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 1928 transitions. [2025-01-10 00:29:53,505 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 1928 transitions. Word has length 9 [2025-01-10 00:29:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:53,505 INFO L471 AbstractCegarLoop]: Abstraction has 1465 states and 1928 transitions. [2025-01-10 00:29:53,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-01-10 00:29:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 1928 transitions. [2025-01-10 00:29:53,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-10 00:29:53,506 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:53,506 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:53,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 00:29:53,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:53,711 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:29:53,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2004535318, now seen corresponding path program 1 times [2025-01-10 00:29:53,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:53,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666493365] [2025-01-10 00:29:53,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:53,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:53,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:53,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:29:53,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 00:29:53,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 00:29:53,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 00:29:53,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:53,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:53,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:29:53,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:53,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:29:53,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:53,925 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:53,925 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:53,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666493365] [2025-01-10 00:29:53,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666493365] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:53,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:53,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:29:53,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010327588] [2025-01-10 00:29:53,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:53,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:29:53,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:53,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:29:53,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:53,925 INFO L87 Difference]: Start difference. First operand 1465 states and 1928 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:55,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:55,985 INFO L93 Difference]: Finished difference Result 2011 states and 2702 transitions. [2025-01-10 00:29:55,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:29:55,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-10 00:29:55,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:55,990 INFO L225 Difference]: With dead ends: 2011 [2025-01-10 00:29:55,990 INFO L226 Difference]: Without dead ends: 2011 [2025-01-10 00:29:55,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:29:55,994 INFO L435 NwaCegarLoop]: 1013 mSDtfsCounter, 922 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:55,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 2089 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-01-10 00:29:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2025-01-10 00:29:56,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1420. [2025-01-10 00:29:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 934 states have (on average 1.9646680942184154) internal successors, (1835), 1400 states have internal predecessors, (1835), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-01-10 00:29:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1869 transitions. [2025-01-10 00:29:56,018 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1869 transitions. Word has length 10 [2025-01-10 00:29:56,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:56,018 INFO L471 AbstractCegarLoop]: Abstraction has 1420 states and 1869 transitions. [2025-01-10 00:29:56,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:56,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1869 transitions. [2025-01-10 00:29:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-10 00:29:56,018 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:56,019 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:56,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 00:29:56,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:56,222 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:29:56,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:56,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2004535319, now seen corresponding path program 1 times [2025-01-10 00:29:56,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:56,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761144883] [2025-01-10 00:29:56,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:56,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:56,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:56,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:29:56,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 00:29:56,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 00:29:56,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 00:29:56,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:56,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:56,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:29:56,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:56,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:29:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:56,376 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:56,377 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761144883] [2025-01-10 00:29:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761144883] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:56,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:56,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:29:56,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963117035] [2025-01-10 00:29:56,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:56,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:29:56,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:56,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:29:56,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:56,378 INFO L87 Difference]: Start difference. First operand 1420 states and 1869 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:58,921 INFO L93 Difference]: Finished difference Result 2076 states and 2725 transitions. [2025-01-10 00:29:58,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:29:58,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-10 00:29:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:58,932 INFO L225 Difference]: With dead ends: 2076 [2025-01-10 00:29:58,932 INFO L226 Difference]: Without dead ends: 2076 [2025-01-10 00:29:58,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:29:58,932 INFO L435 NwaCegarLoop]: 1189 mSDtfsCounter, 703 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:58,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 2443 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-01-10 00:29:58,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2025-01-10 00:29:58,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1412. [2025-01-10 00:29:58,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 936 states have (on average 1.936965811965812) internal successors, (1813), 1392 states have internal predecessors, (1813), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-01-10 00:29:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1847 transitions. [2025-01-10 00:29:58,978 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1847 transitions. Word has length 10 [2025-01-10 00:29:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:58,979 INFO L471 AbstractCegarLoop]: Abstraction has 1412 states and 1847 transitions. [2025-01-10 00:29:58,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1847 transitions. [2025-01-10 00:29:58,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-10 00:29:58,979 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:58,979 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:58,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 00:29:59,180 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 [2025-01-10 00:29:59,180 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:29:59,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash 830970191, now seen corresponding path program 1 times [2025-01-10 00:29:59,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:59,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442599680] [2025-01-10 00:29:59,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:59,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:59,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:59,184 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) [2025-01-10 00:29:59,185 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 [2025-01-10 00:29:59,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 00:29:59,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 00:29:59,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:59,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:59,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:29:59,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:59,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:59,358 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442599680] [2025-01-10 00:29:59,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442599680] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:59,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:59,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:29:59,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246924338] [2025-01-10 00:29:59,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:59,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:29:59,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:59,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:29:59,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:59,359 INFO L87 Difference]: Start difference. First operand 1412 states and 1847 transitions. Second operand has 4 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), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:59,766 INFO L93 Difference]: Finished difference Result 1858 states and 2403 transitions. [2025-01-10 00:29:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:29:59,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-10 00:29:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:59,771 INFO L225 Difference]: With dead ends: 1858 [2025-01-10 00:29:59,771 INFO L226 Difference]: Without dead ends: 1858 [2025-01-10 00:29:59,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:59,772 INFO L435 NwaCegarLoop]: 1153 mSDtfsCounter, 454 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:59,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 3189 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 00:29:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2025-01-10 00:29:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1666. [2025-01-10 00:29:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1190 states have (on average 1.9529411764705882) internal successors, (2324), 1646 states have internal predecessors, (2324), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-01-10 00:29:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2358 transitions. [2025-01-10 00:29:59,796 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2358 transitions. Word has length 13 [2025-01-10 00:29:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:59,796 INFO L471 AbstractCegarLoop]: Abstraction has 1666 states and 2358 transitions. [2025-01-10 00:29:59,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2358 transitions. [2025-01-10 00:29:59,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-10 00:29:59,797 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:59,797 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:59,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 00:29:59,997 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 [2025-01-10 00:29:59,998 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:29:59,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash 115249104, now seen corresponding path program 1 times [2025-01-10 00:29:59,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:59,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9636559] [2025-01-10 00:29:59,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:59,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:59,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:00,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:00,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 00:30:00,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 00:30:00,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 00:30:00,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:00,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:00,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:30:00,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:00,161 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:00,161 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:00,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9636559] [2025-01-10 00:30:00,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9636559] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:00,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:00,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:30:00,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562233530] [2025-01-10 00:30:00,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:00,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:30:00,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:00,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:30:00,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:30:00,162 INFO L87 Difference]: Start difference. First operand 1666 states and 2358 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:01,572 INFO L93 Difference]: Finished difference Result 1712 states and 2305 transitions. [2025-01-10 00:30:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:30:01,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-10 00:30:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:01,578 INFO L225 Difference]: With dead ends: 1712 [2025-01-10 00:30:01,578 INFO L226 Difference]: Without dead ends: 1712 [2025-01-10 00:30:01,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:01,578 INFO L435 NwaCegarLoop]: 815 mSDtfsCounter, 736 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:01,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1615 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-10 00:30:01,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2025-01-10 00:30:01,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1643. [2025-01-10 00:30:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1190 states have (on average 1.8756302521008403) internal successors, (2232), 1623 states have internal predecessors, (2232), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-01-10 00:30:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2266 transitions. [2025-01-10 00:30:01,625 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2266 transitions. Word has length 13 [2025-01-10 00:30:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:01,626 INFO L471 AbstractCegarLoop]: Abstraction has 1643 states and 2266 transitions. [2025-01-10 00:30:01,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2266 transitions. [2025-01-10 00:30:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-10 00:30:01,626 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:01,626 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:01,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 00:30:01,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:01,827 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr323REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:01,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash 115249105, now seen corresponding path program 1 times [2025-01-10 00:30:01,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:01,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690543250] [2025-01-10 00:30:01,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:01,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:01,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:01,830 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:01,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 00:30:01,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 00:30:01,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 00:30:01,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:01,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:01,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:30:01,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:01,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:30:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:02,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:02,066 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:02,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690543250] [2025-01-10 00:30:02,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690543250] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:02,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:02,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:30:02,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463618277] [2025-01-10 00:30:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:02,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:30:02,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:02,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:30:02,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:30:02,068 INFO L87 Difference]: Start difference. First operand 1643 states and 2266 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:04,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:04,200 INFO L93 Difference]: Finished difference Result 1768 states and 2204 transitions. [2025-01-10 00:30:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:30:04,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-10 00:30:04,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:04,205 INFO L225 Difference]: With dead ends: 1768 [2025-01-10 00:30:04,205 INFO L226 Difference]: Without dead ends: 1768 [2025-01-10 00:30:04,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:04,211 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 406 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:04,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1944 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-01-10 00:30:04,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2025-01-10 00:30:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1592. [2025-01-10 00:30:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1139 states have (on average 1.8744512730465321) internal successors, (2135), 1572 states have internal predecessors, (2135), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-01-10 00:30:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2169 transitions. [2025-01-10 00:30:04,229 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2169 transitions. Word has length 13 [2025-01-10 00:30:04,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:04,230 INFO L471 AbstractCegarLoop]: Abstraction has 1592 states and 2169 transitions. [2025-01-10 00:30:04,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:04,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2169 transitions. [2025-01-10 00:30:04,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-10 00:30:04,230 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:04,230 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:04,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 00:30:04,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:04,431 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr347REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:04,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:04,432 INFO L85 PathProgramCache]: Analyzing trace with hash -722189425, now seen corresponding path program 1 times [2025-01-10 00:30:04,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:04,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212360139] [2025-01-10 00:30:04,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:04,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:04,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:04,436 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:04,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 00:30:04,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 00:30:04,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 00:30:04,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:04,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:04,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:30:04,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:04,569 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:04,569 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:04,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212360139] [2025-01-10 00:30:04,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212360139] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:04,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:04,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:30:04,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009892413] [2025-01-10 00:30:04,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:04,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:30:04,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:04,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:30:04,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:30:04,570 INFO L87 Difference]: Start difference. First operand 1592 states and 2169 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-01-10 00:30:04,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:04,622 INFO L93 Difference]: Finished difference Result 1520 states and 2046 transitions. [2025-01-10 00:30:04,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:30:04,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-10 00:30:04,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:04,626 INFO L225 Difference]: With dead ends: 1520 [2025-01-10 00:30:04,626 INFO L226 Difference]: Without dead ends: 1520 [2025-01-10 00:30:04,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:04,626 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 45 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:04,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2878 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:30:04,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2025-01-10 00:30:04,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1520. [2025-01-10 00:30:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1086 states have (on average 1.852670349907919) internal successors, (2012), 1500 states have internal predecessors, (2012), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-01-10 00:30:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2046 transitions. [2025-01-10 00:30:04,640 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2046 transitions. Word has length 14 [2025-01-10 00:30:04,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:04,641 INFO L471 AbstractCegarLoop]: Abstraction has 1520 states and 2046 transitions. [2025-01-10 00:30:04,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-01-10 00:30:04,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2046 transitions. [2025-01-10 00:30:04,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-10 00:30:04,641 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:04,641 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:04,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 00:30:04,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:04,846 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:04,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1465858338, now seen corresponding path program 1 times [2025-01-10 00:30:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618745670] [2025-01-10 00:30:04,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:04,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:04,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:04,852 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:04,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 00:30:04,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 00:30:04,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 00:30:04,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:04,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:04,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:30:04,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:04,997 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:30:04,998 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:30:04,998 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:30:05,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-01-10 00:30:05,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:30:05,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-01-10 00:30:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:05,042 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:05,042 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:05,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618745670] [2025-01-10 00:30:05,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618745670] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:05,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:05,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:30:05,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082172553] [2025-01-10 00:30:05,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:05,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:30:05,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:05,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:30:05,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:30:05,044 INFO L87 Difference]: Start difference. First operand 1520 states and 2046 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:05,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:05,243 INFO L93 Difference]: Finished difference Result 2035 states and 2401 transitions. [2025-01-10 00:30:05,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:30:05,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-01-10 00:30:05,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:05,249 INFO L225 Difference]: With dead ends: 2035 [2025-01-10 00:30:05,249 INFO L226 Difference]: Without dead ends: 2035 [2025-01-10 00:30:05,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:05,249 INFO L435 NwaCegarLoop]: 1037 mSDtfsCounter, 858 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:05,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 3017 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 00:30:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2025-01-10 00:30:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1203. [2025-01-10 00:30:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 771 states have (on average 1.861219195849546) internal successors, (1435), 1185 states have internal predecessors, (1435), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:30:05,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1465 transitions. [2025-01-10 00:30:05,265 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1465 transitions. Word has length 16 [2025-01-10 00:30:05,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:05,265 INFO L471 AbstractCegarLoop]: Abstraction has 1203 states and 1465 transitions. [2025-01-10 00:30:05,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:05,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1465 transitions. [2025-01-10 00:30:05,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-10 00:30:05,266 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:05,266 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] [2025-01-10 00:30:05,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 00:30:05,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:05,467 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:05,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:05,467 INFO L85 PathProgramCache]: Analyzing trace with hash 418110114, now seen corresponding path program 1 times [2025-01-10 00:30:05,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:05,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566278059] [2025-01-10 00:30:05,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:05,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:05,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:05,470 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:05,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 00:30:05,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 00:30:05,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 00:30:05,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:05,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:05,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:30:05,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:05,662 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:05,662 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:05,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566278059] [2025-01-10 00:30:05,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566278059] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:05,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:05,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:30:05,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712098965] [2025-01-10 00:30:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:05,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:30:05,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:05,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:30:05,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:30:05,663 INFO L87 Difference]: Start difference. First operand 1203 states and 1465 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:07,154 INFO L93 Difference]: Finished difference Result 1583 states and 1940 transitions. [2025-01-10 00:30:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:30:07,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-01-10 00:30:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:07,157 INFO L225 Difference]: With dead ends: 1583 [2025-01-10 00:30:07,157 INFO L226 Difference]: Without dead ends: 1583 [2025-01-10 00:30:07,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:07,158 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 885 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:07,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1226 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-10 00:30:07,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2025-01-10 00:30:07,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1180. [2025-01-10 00:30:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 771 states have (on average 1.801556420233463) internal successors, (1389), 1162 states have internal predecessors, (1389), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:30:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1419 transitions. [2025-01-10 00:30:07,174 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1419 transitions. Word has length 20 [2025-01-10 00:30:07,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:07,174 INFO L471 AbstractCegarLoop]: Abstraction has 1180 states and 1419 transitions. [2025-01-10 00:30:07,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:07,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1419 transitions. [2025-01-10 00:30:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-10 00:30:07,175 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:07,176 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] [2025-01-10 00:30:07,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-10 00:30:07,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:07,382 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:07,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:07,383 INFO L85 PathProgramCache]: Analyzing trace with hash 418110115, now seen corresponding path program 1 times [2025-01-10 00:30:07,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:07,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335702154] [2025-01-10 00:30:07,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:07,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:07,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:07,385 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:07,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 00:30:07,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 00:30:07,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 00:30:07,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:07,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:07,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 00:30:07,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:07,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:30:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:07,593 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:07,593 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:07,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335702154] [2025-01-10 00:30:07,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335702154] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:07,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:07,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:30:07,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950835632] [2025-01-10 00:30:07,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:07,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:30:07,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:07,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:30:07,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:07,595 INFO L87 Difference]: Start difference. First operand 1180 states and 1419 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:10,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:10,246 INFO L93 Difference]: Finished difference Result 1824 states and 2186 transitions. [2025-01-10 00:30:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:30:10,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-01-10 00:30:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:10,252 INFO L225 Difference]: With dead ends: 1824 [2025-01-10 00:30:10,252 INFO L226 Difference]: Without dead ends: 1824 [2025-01-10 00:30:10,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:30:10,252 INFO L435 NwaCegarLoop]: 1129 mSDtfsCounter, 740 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:10,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 3015 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-01-10 00:30:10,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2025-01-10 00:30:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1294. [2025-01-10 00:30:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 885 states have (on average 1.7254237288135594) internal successors, (1527), 1276 states have internal predecessors, (1527), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:30:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1557 transitions. [2025-01-10 00:30:10,281 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1557 transitions. Word has length 20 [2025-01-10 00:30:10,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:10,282 INFO L471 AbstractCegarLoop]: Abstraction has 1294 states and 1557 transitions. [2025-01-10 00:30:10,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1557 transitions. [2025-01-10 00:30:10,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-10 00:30:10,283 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:10,283 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:10,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-10 00:30:10,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:10,484 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:10,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1774352497, now seen corresponding path program 1 times [2025-01-10 00:30:10,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:10,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938532421] [2025-01-10 00:30:10,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:10,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:10,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:10,487 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:10,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 00:30:10,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-10 00:30:10,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-10 00:30:10,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:10,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:10,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 00:30:10,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:10,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:30:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:10,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:30:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:11,199 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:11,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938532421] [2025-01-10 00:30:11,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938532421] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:30:11,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:30:11,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2025-01-10 00:30:11,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695258283] [2025-01-10 00:30:11,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:30:11,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 00:30:11,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:11,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 00:30:11,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-01-10 00:30:11,200 INFO L87 Difference]: Start difference. First operand 1294 states and 1557 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 10 states have internal predecessors, (73), 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) [2025-01-10 00:30:19,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:19,438 INFO L93 Difference]: Finished difference Result 2180 states and 2676 transitions. [2025-01-10 00:30:19,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 00:30:19,439 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-10 00:30:19,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:19,443 INFO L225 Difference]: With dead ends: 2180 [2025-01-10 00:30:19,443 INFO L226 Difference]: Without dead ends: 2180 [2025-01-10 00:30:19,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-01-10 00:30:19,445 INFO L435 NwaCegarLoop]: 1182 mSDtfsCounter, 1287 mSDsluCounter, 4666 mSDsCounter, 0 mSdLazyCounter, 4539 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 5848 SdHoareTripleChecker+Invalid, 4566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 4539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:19,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 5848 Invalid, 4566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 4539 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2025-01-10 00:30:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2025-01-10 00:30:19,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1458. [2025-01-10 00:30:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1049 states have (on average 1.676835081029552) internal successors, (1759), 1440 states have internal predecessors, (1759), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:30:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1789 transitions. [2025-01-10 00:30:19,465 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1789 transitions. Word has length 39 [2025-01-10 00:30:19,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:19,465 INFO L471 AbstractCegarLoop]: Abstraction has 1458 states and 1789 transitions. [2025-01-10 00:30:19,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 10 states have internal predecessors, (73), 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) [2025-01-10 00:30:19,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1789 transitions. [2025-01-10 00:30:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-01-10 00:30:19,468 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:19,468 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:19,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-10 00:30:19,668 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 [2025-01-10 00:30:19,669 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:19,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:19,669 INFO L85 PathProgramCache]: Analyzing trace with hash 815764365, now seen corresponding path program 1 times [2025-01-10 00:30:19,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:19,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409885962] [2025-01-10 00:30:19,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:19,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:19,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:19,673 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) [2025-01-10 00:30:19,673 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 [2025-01-10 00:30:19,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-01-10 00:30:19,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-01-10 00:30:19,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:19,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:19,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:30:19,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:19,920 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:19,920 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:19,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409885962] [2025-01-10 00:30:19,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409885962] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:19,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:19,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:30:19,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199411543] [2025-01-10 00:30:19,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:19,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:30:19,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:19,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:30:19,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:30:19,921 INFO L87 Difference]: Start difference. First operand 1458 states and 1789 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:19,979 INFO L93 Difference]: Finished difference Result 1147 states and 1353 transitions. [2025-01-10 00:30:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:30:19,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-01-10 00:30:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:19,982 INFO L225 Difference]: With dead ends: 1147 [2025-01-10 00:30:19,982 INFO L226 Difference]: Without dead ends: 1147 [2025-01-10 00:30:19,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:19,982 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 56 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:19,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2639 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:30:19,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2025-01-10 00:30:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1145. [2025-01-10 00:30:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 759 states have (on average 1.7404479578392622) internal successors, (1321), 1127 states have internal predecessors, (1321), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:30:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1351 transitions. [2025-01-10 00:30:19,990 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1351 transitions. Word has length 55 [2025-01-10 00:30:19,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:19,991 INFO L471 AbstractCegarLoop]: Abstraction has 1145 states and 1351 transitions. [2025-01-10 00:30:19,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:19,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1351 transitions. [2025-01-10 00:30:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-01-10 00:30:19,991 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:19,991 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:20,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 00:30:20,192 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 [2025-01-10 00:30:20,192 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:20,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1321271719, now seen corresponding path program 1 times [2025-01-10 00:30:20,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:20,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693698002] [2025-01-10 00:30:20,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:20,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:20,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:20,195 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:20,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 00:30:20,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-01-10 00:30:20,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-01-10 00:30:20,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:20,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:20,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 00:30:20,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:20,450 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-10 00:30:20,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-01-10 00:30:20,478 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2025-01-10 00:30:20,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2025-01-10 00:30:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:20,703 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:20,703 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:20,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693698002] [2025-01-10 00:30:20,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693698002] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:20,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:20,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:30:20,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088880447] [2025-01-10 00:30:20,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:20,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:30:20,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:20,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:30:20,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:20,704 INFO L87 Difference]: Start difference. First operand 1145 states and 1351 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:22,816 INFO L93 Difference]: Finished difference Result 2066 states and 2457 transitions. [2025-01-10 00:30:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:30:22,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-01-10 00:30:22,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:22,824 INFO L225 Difference]: With dead ends: 2066 [2025-01-10 00:30:22,827 INFO L226 Difference]: Without dead ends: 2066 [2025-01-10 00:30:22,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:22,828 INFO L435 NwaCegarLoop]: 574 mSDtfsCounter, 769 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:22,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 2102 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-01-10 00:30:22,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2025-01-10 00:30:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1592. [2025-01-10 00:30:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1191 states have (on average 1.7380352644836272) internal successors, (2070), 1562 states have internal predecessors, (2070), 29 states have call successors, (29), 9 states have call predecessors, (29), 7 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-01-10 00:30:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2124 transitions. [2025-01-10 00:30:22,844 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2124 transitions. Word has length 63 [2025-01-10 00:30:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:22,845 INFO L471 AbstractCegarLoop]: Abstraction has 1592 states and 2124 transitions. [2025-01-10 00:30:22,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2124 transitions. [2025-01-10 00:30:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-01-10 00:30:22,846 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:22,846 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:22,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 00:30:23,050 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 [2025-01-10 00:30:23,050 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:23,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:23,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1321271718, now seen corresponding path program 1 times [2025-01-10 00:30:23,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:23,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561378974] [2025-01-10 00:30:23,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:23,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:23,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:23,053 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) [2025-01-10 00:30:23,054 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 [2025-01-10 00:30:23,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-01-10 00:30:23,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-01-10 00:30:23,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:23,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:23,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-10 00:30:23,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:23,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:30:23,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-10 00:30:23,390 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-01-10 00:30:23,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-01-10 00:30:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:23,905 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:23,905 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:23,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561378974] [2025-01-10 00:30:23,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561378974] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:23,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:23,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:30:23,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703248105] [2025-01-10 00:30:23,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:23,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 00:30:23,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:23,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 00:30:23,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:30:23,906 INFO L87 Difference]: Start difference. First operand 1592 states and 2124 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:26,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:26,418 INFO L93 Difference]: Finished difference Result 1597 states and 2130 transitions. [2025-01-10 00:30:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:30:26,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-01-10 00:30:26,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:26,427 INFO L225 Difference]: With dead ends: 1597 [2025-01-10 00:30:26,427 INFO L226 Difference]: Without dead ends: 1597 [2025-01-10 00:30:26,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:30:26,427 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 79 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:26,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2652 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-01-10 00:30:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2025-01-10 00:30:26,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1597. [2025-01-10 00:30:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1195 states have (on average 1.7355648535564854) internal successors, (2074), 1566 states have internal predecessors, (2074), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2025-01-10 00:30:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2130 transitions. [2025-01-10 00:30:26,447 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2130 transitions. Word has length 63 [2025-01-10 00:30:26,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:26,447 INFO L471 AbstractCegarLoop]: Abstraction has 1597 states and 2130 transitions. [2025-01-10 00:30:26,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:26,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2130 transitions. [2025-01-10 00:30:26,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-10 00:30:26,448 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:26,448 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:26,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-10 00:30:26,649 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 [2025-01-10 00:30:26,649 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:26,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1071409701, now seen corresponding path program 1 times [2025-01-10 00:30:26,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:26,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818354894] [2025-01-10 00:30:26,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:26,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:26,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:26,653 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:26,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-10 00:30:26,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-10 00:30:26,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-10 00:30:26,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:26,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:26,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 00:30:26,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:27,043 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:27,043 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:27,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818354894] [2025-01-10 00:30:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818354894] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:27,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:27,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-10 00:30:27,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533820886] [2025-01-10 00:30:27,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:27,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:30:27,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:27,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:30:27,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:30:27,044 INFO L87 Difference]: Start difference. First operand 1597 states and 2130 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:27,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:27,115 INFO L93 Difference]: Finished difference Result 1605 states and 2138 transitions. [2025-01-10 00:30:27,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 00:30:27,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2025-01-10 00:30:27,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:27,119 INFO L225 Difference]: With dead ends: 1605 [2025-01-10 00:30:27,119 INFO L226 Difference]: Without dead ends: 1605 [2025-01-10 00:30:27,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-01-10 00:30:27,120 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 25 mSDsluCounter, 4626 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5538 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:27,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5538 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 00:30:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2025-01-10 00:30:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1604. [2025-01-10 00:30:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1200 states have (on average 1.7325) internal successors, (2079), 1572 states have internal predecessors, (2079), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2025-01-10 00:30:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2137 transitions. [2025-01-10 00:30:27,147 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2137 transitions. Word has length 71 [2025-01-10 00:30:27,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:27,147 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2137 transitions. [2025-01-10 00:30:27,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:30:27,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2137 transitions. [2025-01-10 00:30:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-10 00:30:27,148 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:27,149 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:27,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-10 00:30:27,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:27,353 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:27,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash 766601637, now seen corresponding path program 1 times [2025-01-10 00:30:27,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:27,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486458312] [2025-01-10 00:30:27,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:27,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:27,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:27,356 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:27,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-10 00:30:27,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-10 00:30:27,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-10 00:30:27,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:27,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:27,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:30:27,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:27,700 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-10 00:30:27,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-01-10 00:30:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:27,703 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:27,703 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:27,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486458312] [2025-01-10 00:30:27,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486458312] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:27,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:27,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:30:27,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329733428] [2025-01-10 00:30:27,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:27,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:30:27,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:27,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:30:27,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:27,705 INFO L87 Difference]: Start difference. First operand 1604 states and 2137 transitions. Second operand has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 00:30:32,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:30:36,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:30:37,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:37,494 INFO L93 Difference]: Finished difference Result 1996 states and 2644 transitions. [2025-01-10 00:30:37,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:30:37,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2025-01-10 00:30:37,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:37,498 INFO L225 Difference]: With dead ends: 1996 [2025-01-10 00:30:37,498 INFO L226 Difference]: Without dead ends: 1996 [2025-01-10 00:30:37,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:30:37,499 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 759 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 27 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:37,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1599 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1558 Invalid, 6 Unknown, 0 Unchecked, 9.7s Time] [2025-01-10 00:30:37,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2025-01-10 00:30:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1601. [2025-01-10 00:30:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1200 states have (on average 1.7275) internal successors, (2073), 1569 states have internal predecessors, (2073), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2025-01-10 00:30:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2131 transitions. [2025-01-10 00:30:37,535 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2131 transitions. Word has length 74 [2025-01-10 00:30:37,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:37,535 INFO L471 AbstractCegarLoop]: Abstraction has 1601 states and 2131 transitions. [2025-01-10 00:30:37,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 00:30:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2131 transitions. [2025-01-10 00:30:37,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-10 00:30:37,536 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:37,536 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:37,560 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 [2025-01-10 00:30:37,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:37,737 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:37,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash 766601638, now seen corresponding path program 1 times [2025-01-10 00:30:37,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:37,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068882576] [2025-01-10 00:30:37,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:37,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:37,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:37,740 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:37,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-10 00:30:37,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-10 00:30:38,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-10 00:30:38,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:38,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:38,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-10 00:30:38,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:38,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:30:38,421 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |alt_malloc_#res.base| (select |c_#length| |alt_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2025-01-10 00:30:38,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:30:38,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-10 00:30:38,447 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:30:38,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-10 00:30:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:38,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:38,453 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:38,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068882576] [2025-01-10 00:30:38,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068882576] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:38,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:38,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:30:38,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658378552] [2025-01-10 00:30:38,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:38,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:30:38,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:38,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:30:38,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2025-01-10 00:30:38,454 INFO L87 Difference]: Start difference. First operand 1601 states and 2131 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 7 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 00:30:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:42,189 INFO L93 Difference]: Finished difference Result 2629 states and 3453 transitions. [2025-01-10 00:30:42,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:30:42,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 7 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2025-01-10 00:30:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:42,198 INFO L225 Difference]: With dead ends: 2629 [2025-01-10 00:30:42,198 INFO L226 Difference]: Without dead ends: 2629 [2025-01-10 00:30:42,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2025-01-10 00:30:42,199 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 1400 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 4410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1709 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:42,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 2436 Invalid, 4410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2674 Invalid, 0 Unknown, 1709 Unchecked, 3.7s Time] [2025-01-10 00:30:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2025-01-10 00:30:42,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 1593. [2025-01-10 00:30:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1200 states have (on average 1.7141666666666666) internal successors, (2057), 1561 states have internal predecessors, (2057), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2025-01-10 00:30:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2115 transitions. [2025-01-10 00:30:42,221 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2115 transitions. Word has length 74 [2025-01-10 00:30:42,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:42,221 INFO L471 AbstractCegarLoop]: Abstraction has 1593 states and 2115 transitions. [2025-01-10 00:30:42,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 7 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 00:30:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2115 transitions. [2025-01-10 00:30:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-01-10 00:30:42,222 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:42,222 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:42,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-10 00:30:42,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:42,425 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:42,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash -553492728, now seen corresponding path program 1 times [2025-01-10 00:30:42,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:42,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582740692] [2025-01-10 00:30:42,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:42,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:42,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:42,430 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:42,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-10 00:30:42,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-01-10 00:30:42,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-01-10 00:30:42,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:42,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:42,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 00:30:42,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:42,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:30:42,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-10 00:30:42,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-01-10 00:30:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:42,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:42,734 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582740692] [2025-01-10 00:30:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582740692] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:42,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:42,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-10 00:30:42,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248176603] [2025-01-10 00:30:42,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:42,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:30:42,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:42,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:30:42,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:30:42,737 INFO L87 Difference]: Start difference. First operand 1593 states and 2115 transitions. Second operand has 8 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:30:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:45,138 INFO L93 Difference]: Finished difference Result 1608 states and 2131 transitions. [2025-01-10 00:30:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 00:30:45,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2025-01-10 00:30:45,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:45,143 INFO L225 Difference]: With dead ends: 1608 [2025-01-10 00:30:45,143 INFO L226 Difference]: Without dead ends: 1608 [2025-01-10 00:30:45,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-01-10 00:30:45,143 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 16 mSDsluCounter, 3026 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:45,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3924 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-01-10 00:30:45,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2025-01-10 00:30:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1607. [2025-01-10 00:30:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1212 states have (on average 1.7103960396039604) internal successors, (2073), 1573 states have internal predecessors, (2073), 31 states have call successors, (31), 13 states have call predecessors, (31), 10 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2025-01-10 00:30:45,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2131 transitions. [2025-01-10 00:30:45,158 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2131 transitions. Word has length 81 [2025-01-10 00:30:45,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:45,158 INFO L471 AbstractCegarLoop]: Abstraction has 1607 states and 2131 transitions. [2025-01-10 00:30:45,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:30:45,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2131 transitions. [2025-01-10 00:30:45,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-01-10 00:30:45,159 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:45,159 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:45,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-10 00:30:45,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:45,363 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:45,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:45,363 INFO L85 PathProgramCache]: Analyzing trace with hash 21594692, now seen corresponding path program 1 times [2025-01-10 00:30:45,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:45,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539923548] [2025-01-10 00:30:45,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:45,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:45,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:45,366 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:45,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-10 00:30:45,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-01-10 00:30:45,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-01-10 00:30:45,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:45,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:45,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-10 00:30:45,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:45,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:30:45,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-10 00:30:45,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-01-10 00:30:45,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-01-10 00:30:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:45,795 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:45,795 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:45,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539923548] [2025-01-10 00:30:45,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539923548] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:45,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:45,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 00:30:45,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686498505] [2025-01-10 00:30:45,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:45,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 00:30:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:45,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 00:30:45,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-01-10 00:30:45,796 INFO L87 Difference]: Start difference. First operand 1607 states and 2131 transitions. Second operand has 9 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 00:30:49,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:49,048 INFO L93 Difference]: Finished difference Result 1607 states and 2129 transitions. [2025-01-10 00:30:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 00:30:49,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 82 [2025-01-10 00:30:49,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:49,051 INFO L225 Difference]: With dead ends: 1607 [2025-01-10 00:30:49,051 INFO L226 Difference]: Without dead ends: 1607 [2025-01-10 00:30:49,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-01-10 00:30:49,052 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 13 mSDsluCounter, 3727 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:49,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4621 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-01-10 00:30:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2025-01-10 00:30:49,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1607. [2025-01-10 00:30:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1212 states have (on average 1.7087458745874586) internal successors, (2071), 1573 states have internal predecessors, (2071), 31 states have call successors, (31), 13 states have call predecessors, (31), 10 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2025-01-10 00:30:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2129 transitions. [2025-01-10 00:30:49,066 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2129 transitions. Word has length 82 [2025-01-10 00:30:49,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:49,066 INFO L471 AbstractCegarLoop]: Abstraction has 1607 states and 2129 transitions. [2025-01-10 00:30:49,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 00:30:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2129 transitions. [2025-01-10 00:30:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-01-10 00:30:49,067 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:49,067 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:49,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-01-10 00:30:49,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:49,268 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:49,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash 605089873, now seen corresponding path program 1 times [2025-01-10 00:30:49,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:49,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185380893] [2025-01-10 00:30:49,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:49,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:49,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:49,272 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:49,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-10 00:30:49,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-01-10 00:30:49,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-01-10 00:30:49,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:49,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:49,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 00:30:49,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:49,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-10 00:30:49,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-01-10 00:30:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:49,637 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:49,638 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185380893] [2025-01-10 00:30:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185380893] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:49,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:49,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-10 00:30:49,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307927295] [2025-01-10 00:30:49,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:49,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:30:49,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:49,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:30:49,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:30:49,639 INFO L87 Difference]: Start difference. First operand 1607 states and 2129 transitions. Second operand has 8 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 00:30:51,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:51,963 INFO L93 Difference]: Finished difference Result 1638 states and 2169 transitions. [2025-01-10 00:30:51,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 00:30:51,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 89 [2025-01-10 00:30:51,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:51,969 INFO L225 Difference]: With dead ends: 1638 [2025-01-10 00:30:51,969 INFO L226 Difference]: Without dead ends: 1638 [2025-01-10 00:30:51,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-01-10 00:30:51,976 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 43 mSDsluCounter, 3428 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 4288 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:51,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 4288 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-01-10 00:30:51,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2025-01-10 00:30:51,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1621. [2025-01-10 00:30:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1224 states have (on average 1.7050653594771241) internal successors, (2087), 1585 states have internal predecessors, (2087), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 24 states have call predecessors, (29), 27 states have call successors, (29) [2025-01-10 00:30:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2147 transitions. [2025-01-10 00:30:52,002 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2147 transitions. Word has length 89 [2025-01-10 00:30:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:52,002 INFO L471 AbstractCegarLoop]: Abstraction has 1621 states and 2147 transitions. [2025-01-10 00:30:52,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 00:30:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2147 transitions. [2025-01-10 00:30:52,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-01-10 00:30:52,003 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:52,003 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:52,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-10 00:30:52,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:52,204 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:52,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash 605089874, now seen corresponding path program 1 times [2025-01-10 00:30:52,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:52,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227993156] [2025-01-10 00:30:52,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:52,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:52,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:52,207 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:52,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-10 00:30:52,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-01-10 00:30:52,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-01-10 00:30:52,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:52,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:52,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:30:52,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:52,474 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:30:52,474 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:52,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227993156] [2025-01-10 00:30:52,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227993156] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:30:52,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:30:52,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:30:52,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821965600] [2025-01-10 00:30:52,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:30:52,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:30:52,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:52,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:30:52,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:52,476 INFO L87 Difference]: Start difference. First operand 1621 states and 2147 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-10 00:30:52,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:52,530 INFO L93 Difference]: Finished difference Result 1623 states and 2147 transitions. [2025-01-10 00:30:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:30:52,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 89 [2025-01-10 00:30:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:52,533 INFO L225 Difference]: With dead ends: 1623 [2025-01-10 00:30:52,533 INFO L226 Difference]: Without dead ends: 1617 [2025-01-10 00:30:52,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:30:52,534 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 3 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3596 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:52,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3596 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:30:52,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2025-01-10 00:30:52,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1617. [2025-01-10 00:30:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1220 states have (on average 1.705737704918033) internal successors, (2081), 1583 states have internal predecessors, (2081), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2025-01-10 00:30:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2141 transitions. [2025-01-10 00:30:52,551 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2141 transitions. Word has length 89 [2025-01-10 00:30:52,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:52,551 INFO L471 AbstractCegarLoop]: Abstraction has 1617 states and 2141 transitions. [2025-01-10 00:30:52,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-10 00:30:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2141 transitions. [2025-01-10 00:30:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-01-10 00:30:52,552 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:52,552 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:52,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-01-10 00:30:52,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:52,756 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:52,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -904672503, now seen corresponding path program 1 times [2025-01-10 00:30:52,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:52,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794614950] [2025-01-10 00:30:52,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:52,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:52,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:52,760 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:30:52,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-10 00:30:52,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-01-10 00:30:53,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-01-10 00:30:53,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:53,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:53,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:30:53,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:53,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:30:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:53,170 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:53,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794614950] [2025-01-10 00:30:53,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794614950] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:30:53,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:30:53,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-01-10 00:30:53,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18738927] [2025-01-10 00:30:53,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:30:53,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 00:30:53,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:53,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 00:30:53,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-01-10 00:30:53,171 INFO L87 Difference]: Start difference. First operand 1617 states and 2141 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-10 00:30:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:53,325 INFO L93 Difference]: Finished difference Result 1643 states and 2171 transitions. [2025-01-10 00:30:53,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 00:30:53,326 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 90 [2025-01-10 00:30:53,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:53,328 INFO L225 Difference]: With dead ends: 1643 [2025-01-10 00:30:53,328 INFO L226 Difference]: Without dead ends: 1631 [2025-01-10 00:30:53,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2025-01-10 00:30:53,330 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 22 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:53,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3601 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 00:30:53,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2025-01-10 00:30:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1625. [2025-01-10 00:30:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1228 states have (on average 1.7027687296416938) internal successors, (2091), 1591 states have internal predecessors, (2091), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2025-01-10 00:30:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2151 transitions. [2025-01-10 00:30:53,340 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2151 transitions. Word has length 90 [2025-01-10 00:30:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:53,340 INFO L471 AbstractCegarLoop]: Abstraction has 1625 states and 2151 transitions. [2025-01-10 00:30:53,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-10 00:30:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2151 transitions. [2025-01-10 00:30:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-10 00:30:53,340 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:53,340 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:53,351 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 [2025-01-10 00:30:53,541 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 [2025-01-10 00:30:53,542 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-01-10 00:30:53,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash -78782895, now seen corresponding path program 2 times [2025-01-10 00:30:53,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:53,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405518355] [2025-01-10 00:30:53,543 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:30:53,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:53,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:53,545 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) [2025-01-10 00:30:53,547 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 [2025-01-10 00:30:53,726 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes.