./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:46:01,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:46:01,817 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 07:46:01,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:46:01,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:46:01,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:46:01,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:46:01,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:46:01,861 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:46:01,861 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:46:01,862 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:46:01,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:46:01,863 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:46:01,863 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:46:01,863 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:46:01,864 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:46:01,864 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:46:01,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:46:01,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:46:01,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:46:01,864 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:46:01,864 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:46:01,865 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:46:01,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:46:01,865 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:46:01,865 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:46:01,865 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:46:01,865 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:46:01,865 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:46:01,865 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:46:01,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:46:01,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:46:01,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:46:01,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:46:01,867 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:46:01,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:46:01,867 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 07:46:01,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 07:46:01,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:46:01,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:46:01,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:46:01,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:46:01,868 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2025-02-08 07:46:02,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:46:02,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:46:02,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:46:02,233 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:46:02,234 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:46:02,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2025-02-08 07:46:03,636 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c8223e1fa/3babad6853bb49e9a2abbb3befdff3c0/FLAG6f23cb58f [2025-02-08 07:46:03,993 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:46:03,994 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2025-02-08 07:46:04,010 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c8223e1fa/3babad6853bb49e9a2abbb3befdff3c0/FLAG6f23cb58f [2025-02-08 07:46:04,225 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c8223e1fa/3babad6853bb49e9a2abbb3befdff3c0 [2025-02-08 07:46:04,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:46:04,229 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:46:04,230 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:46:04,230 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:46:04,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:46:04,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:46:04" (1/1) ... [2025-02-08 07:46:04,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64bc7117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:04, skipping insertion in model container [2025-02-08 07:46:04,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:46:04" (1/1) ... [2025-02-08 07:46:04,280 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:46:04,672 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,710 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,714 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,721 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,729 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,766 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,766 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,769 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,769 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,771 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,777 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,778 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,779 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,782 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:04,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:46:04,807 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-08 07:46:04,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1cb19ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:04, skipping insertion in model container [2025-02-08 07:46:04,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:46:04,808 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-08 07:46:04,810 INFO L158 Benchmark]: Toolchain (without parser) took 580.25ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 91.0MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 07:46:04,811 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 201.3MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 07:46:04,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 578.22ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 91.0MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 07:46:04,812 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 201.3MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 578.22ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 91.0MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 750]: 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_BER_nondet_test3-1.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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:46:07,222 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:46:07,370 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 07:46:07,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:46:07,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:46:07,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:46:07,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:46:07,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:46:07,409 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:46:07,409 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:46:07,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:46:07,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:46:07,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:46:07,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:46:07,410 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:46:07,410 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:46:07,410 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:46:07,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:46:07,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:46:07,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:46:07,410 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:46:07,412 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:46:07,412 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:46:07,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:46:07,412 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:46:07,412 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 07:46:07,412 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 07:46:07,412 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:46:07,412 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:46:07,412 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:46:07,413 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:46:07,413 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:46:07,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:46:07,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:46:07,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:46:07,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:46:07,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:46:07,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:46:07,415 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 07:46:07,415 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 07:46:07,416 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:46:07,416 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:46:07,416 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:46:07,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:46:07,416 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 -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2025-02-08 07:46:07,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:46:07,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:46:07,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:46:07,769 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:46:07,770 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:46:07,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2025-02-08 07:46:09,187 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1d6893843/25cb7f0861e045c5baae06f607536e6f/FLAG4ceb2fdc8 [2025-02-08 07:46:09,579 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:46:09,580 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2025-02-08 07:46:09,598 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1d6893843/25cb7f0861e045c5baae06f607536e6f/FLAG4ceb2fdc8 [2025-02-08 07:46:09,800 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1d6893843/25cb7f0861e045c5baae06f607536e6f [2025-02-08 07:46:09,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:46:09,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:46:09,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:46:09,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:46:09,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:46:09,811 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:46:09" (1/1) ... [2025-02-08 07:46:09,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284b690c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:09, skipping insertion in model container [2025-02-08 07:46:09,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:46:09" (1/1) ... [2025-02-08 07:46:09,865 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:46:10,216 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,258 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,262 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,267 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,276 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,315 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,316 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,319 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,322 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,325 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,327 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,328 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,329 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,333 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:46:10,361 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-08 07:46:10,381 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:46:10,414 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,441 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,447 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,450 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,456 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,496 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,496 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,498 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,498 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,500 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,501 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,502 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,502 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,507 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:10,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:46:10,518 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 07:46:10,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:46:10,634 INFO L204 MainTranslator]: Completed translation [2025-02-08 07:46:10,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10 WrapperNode [2025-02-08 07:46:10,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:46:10,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 07:46:10,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 07:46:10,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 07:46:10,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,703 INFO L138 Inliner]: procedures = 180, calls = 274, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1005 [2025-02-08 07:46:10,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 07:46:10,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 07:46:10,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 07:46:10,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 07:46:10,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,722 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,803 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [218, 2, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 54 writes are split as follows [50, 0, 4]. [2025-02-08 07:46:10,803 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,804 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,878 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 07:46:10,916 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 07:46:10,916 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 07:46:10,916 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 07:46:10,917 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (1/1) ... [2025-02-08 07:46:10,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:46:10,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:10,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 07:46:10,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 07:46:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 07:46:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 07:46:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-08 07:46:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 07:46:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 07:46:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-08 07:46:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 07:46:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 07:46:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 07:46:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 07:46:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 07:46:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 07:46:10,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 07:46:10,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-08 07:46:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 07:46:10,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 07:46:11,167 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 07:46:11,169 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 07:46:14,792 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-08 07:46:14,894 INFO L? ?]: Removed 1080 outVars from TransFormulas that were not future-live. [2025-02-08 07:46:14,894 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 07:46:14,934 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 07:46:14,936 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 07:46:14,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:46:14 BoogieIcfgContainer [2025-02-08 07:46:14,936 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 07:46:14,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 07:46:14,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 07:46:14,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 07:46:14,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 07:46:09" (1/3) ... [2025-02-08 07:46:14,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781f3af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:46:14, skipping insertion in model container [2025-02-08 07:46:14,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:10" (2/3) ... [2025-02-08 07:46:14,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781f3af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:46:14, skipping insertion in model container [2025-02-08 07:46:14,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:46:14" (3/3) ... [2025-02-08 07:46:14,944 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test3-1.i [2025-02-08 07:46:14,968 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 07:46:14,970 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_nondet_test3-1.i that has 5 procedures, 1079 locations, 1 initial locations, 38 loop locations, and 525 error locations. [2025-02-08 07:46:15,027 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 07:46:15,037 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;@1444a173, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 07:46:15,037 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2025-02-08 07:46:15,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 1069 states, 539 states have (on average 2.1910946196660483) internal successors, (1181), 1062 states have internal predecessors, (1181), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 07:46:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 07:46:15,053 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:15,054 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 07:46:15,054 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:15,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1210225, now seen corresponding path program 1 times [2025-02-08 07:46:15,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:15,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801900275] [2025-02-08 07:46:15,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:15,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:15,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:15,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:15,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 07:46:15,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 07:46:15,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 07:46:15,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:15,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:15,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:46:15,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:15,330 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48| (_ bv0 1))))) is different from true [2025-02-08 07:46:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:15,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:15,336 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:15,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801900275] [2025-02-08 07:46:15,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801900275] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:15,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:15,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:15,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009872564] [2025-02-08 07:46:15,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:15,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:15,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:15,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:15,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 07:46:15,369 INFO L87 Difference]: Start difference. First operand has 1069 states, 539 states have (on average 2.1910946196660483) internal successors, (1181), 1062 states have internal predecessors, (1181), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.0) 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) [2025-02-08 07:46:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:17,402 INFO L93 Difference]: Finished difference Result 1463 states and 1566 transitions. [2025-02-08 07:46:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:46:17,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) 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 [2025-02-08 07:46:17,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:17,422 INFO L225 Difference]: With dead ends: 1463 [2025-02-08 07:46:17,422 INFO L226 Difference]: Without dead ends: 1460 [2025-02-08 07:46:17,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 07:46:17,425 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 430 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1567 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:17,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1505 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 746 Invalid, 0 Unknown, 1567 Unchecked, 1.9s Time] [2025-02-08 07:46:17,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2025-02-08 07:46:17,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1057. [2025-02-08 07:46:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 533 states have (on average 2.071294559099437) internal successors, (1104), 1050 states have internal predecessors, (1104), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 07:46:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1114 transitions. [2025-02-08 07:46:17,527 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1114 transitions. Word has length 3 [2025-02-08 07:46:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:17,527 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1114 transitions. [2025-02-08 07:46:17,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) 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) [2025-02-08 07:46:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1114 transitions. [2025-02-08 07:46:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 07:46:17,528 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:17,528 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 07:46:17,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 07:46:17,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:17,729 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:17,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1211425, now seen corresponding path program 1 times [2025-02-08 07:46:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:17,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152250538] [2025-02-08 07:46:17,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:17,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:17,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:17,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:17,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 07:46:17,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 07:46:17,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 07:46:17,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:17,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:17,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:46:17,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:17,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:46:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:17,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:17,865 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:17,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152250538] [2025-02-08 07:46:17,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152250538] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:17,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:17,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:46:17,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040960886] [2025-02-08 07:46:17,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:17,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:46:17,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:17,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:46:17,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:17,867 INFO L87 Difference]: Start difference. First operand 1057 states and 1114 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2025-02-08 07:46:19,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:19,196 INFO L93 Difference]: Finished difference Result 1064 states and 1123 transitions. [2025-02-08 07:46:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:46:19,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2025-02-08 07:46:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:19,201 INFO L225 Difference]: With dead ends: 1064 [2025-02-08 07:46:19,201 INFO L226 Difference]: Without dead ends: 1064 [2025-02-08 07:46:19,202 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 [2025-02-08 07:46:19,203 INFO L435 NwaCegarLoop]: 640 mSDtfsCounter, 975 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:19,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 701 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 07:46:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2025-02-08 07:46:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1056. [2025-02-08 07:46:19,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 542 states have (on average 2.0387453874538743) internal successors, (1105), 1048 states have internal predecessors, (1105), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 07:46:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1115 transitions. [2025-02-08 07:46:19,230 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1115 transitions. Word has length 3 [2025-02-08 07:46:19,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:19,230 INFO L471 AbstractCegarLoop]: Abstraction has 1056 states and 1115 transitions. [2025-02-08 07:46:19,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2025-02-08 07:46:19,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1115 transitions. [2025-02-08 07:46:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 07:46:19,231 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:19,231 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 07:46:19,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 07:46:19,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:19,432 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:19,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:19,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1211426, now seen corresponding path program 1 times [2025-02-08 07:46:19,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:19,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950435128] [2025-02-08 07:46:19,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:19,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:19,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:19,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:19,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 07:46:19,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 07:46:19,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 07:46:19,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:19,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:19,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:46:19,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:19,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:46:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:19,565 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:19,566 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950435128] [2025-02-08 07:46:19,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950435128] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:19,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:19,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:46:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268905829] [2025-02-08 07:46:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:19,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:46:19,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:19,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:46:19,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:19,569 INFO L87 Difference]: Start difference. First operand 1056 states and 1115 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2025-02-08 07:46:21,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:21,582 INFO L93 Difference]: Finished difference Result 1468 states and 1561 transitions. [2025-02-08 07:46:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:46:21,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2025-02-08 07:46:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:21,588 INFO L225 Difference]: With dead ends: 1468 [2025-02-08 07:46:21,588 INFO L226 Difference]: Without dead ends: 1468 [2025-02-08 07:46:21,589 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 [2025-02-08 07:46:21,590 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 440 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:21,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1500 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-08 07:46:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2025-02-08 07:46:21,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1274. [2025-02-08 07:46:21,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 760 states have (on average 2.0210526315789474) internal successors, (1536), 1265 states have internal predecessors, (1536), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 07:46:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1548 transitions. [2025-02-08 07:46:21,617 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1548 transitions. Word has length 3 [2025-02-08 07:46:21,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:21,617 INFO L471 AbstractCegarLoop]: Abstraction has 1274 states and 1548 transitions. [2025-02-08 07:46:21,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2025-02-08 07:46:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1548 transitions. [2025-02-08 07:46:21,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 07:46:21,618 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:21,618 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:21,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 07:46:21,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:21,819 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:21,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:21,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1307600859, now seen corresponding path program 1 times [2025-02-08 07:46:21,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:21,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884953150] [2025-02-08 07:46:21,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:21,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:21,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:21,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:21,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 07:46:21,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 07:46:21,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 07:46:21,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:21,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:21,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:46:21,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:21,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:46:22,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 07:46:22,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 07:46:22,070 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:46:22,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 07:46:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:22,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:22,094 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:22,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884953150] [2025-02-08 07:46:22,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884953150] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:22,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:22,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:22,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398596214] [2025-02-08 07:46:22,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:22,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:22,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:22,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:22,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:22,095 INFO L87 Difference]: Start difference. First operand 1274 states and 1548 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:24,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:24,318 INFO L93 Difference]: Finished difference Result 1276 states and 1551 transitions. [2025-02-08 07:46:24,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:46:24,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 07:46:24,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:24,322 INFO L225 Difference]: With dead ends: 1276 [2025-02-08 07:46:24,323 INFO L226 Difference]: Without dead ends: 1276 [2025-02-08 07:46:24,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:24,323 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 2038 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:24,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2043 Valid, 414 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-08 07:46:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2025-02-08 07:46:24,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1044. [2025-02-08 07:46:24,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 542 states have (on average 2.0129151291512914) internal successors, (1091), 1036 states have internal predecessors, (1091), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 07:46:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1101 transitions. [2025-02-08 07:46:24,348 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1101 transitions. Word has length 8 [2025-02-08 07:46:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:24,348 INFO L471 AbstractCegarLoop]: Abstraction has 1044 states and 1101 transitions. [2025-02-08 07:46:24,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1101 transitions. [2025-02-08 07:46:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 07:46:24,349 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:24,349 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:24,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 07:46:24,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:24,551 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr516REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:24,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:24,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1880922071, now seen corresponding path program 1 times [2025-02-08 07:46:24,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:24,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141930375] [2025-02-08 07:46:24,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:24,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:24,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:24,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:24,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 07:46:24,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 07:46:24,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 07:46:24,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:24,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:24,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:46:24,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:24,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:46:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:24,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:24,699 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:24,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141930375] [2025-02-08 07:46:24,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141930375] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:24,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:24,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:24,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734036549] [2025-02-08 07:46:24,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:24,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:46:24,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:24,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:46:24,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:24,701 INFO L87 Difference]: Start difference. First operand 1044 states and 1101 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-02-08 07:46:26,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:26,173 INFO L93 Difference]: Finished difference Result 1389 states and 1477 transitions. [2025-02-08 07:46:26,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:46:26,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2025-02-08 07:46:26,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:26,177 INFO L225 Difference]: With dead ends: 1389 [2025-02-08 07:46:26,177 INFO L226 Difference]: Without dead ends: 1389 [2025-02-08 07:46:26,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:26,178 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 941 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:26,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1226 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-08 07:46:26,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2025-02-08 07:46:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 996. [2025-02-08 07:46:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 542 states have (on average 1.9243542435424354) internal successors, (1043), 988 states have internal predecessors, (1043), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 07:46:26,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1053 transitions. [2025-02-08 07:46:26,196 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1053 transitions. Word has length 9 [2025-02-08 07:46:26,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:26,197 INFO L471 AbstractCegarLoop]: Abstraction has 996 states and 1053 transitions. [2025-02-08 07:46:26,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-02-08 07:46:26,197 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1053 transitions. [2025-02-08 07:46:26,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 07:46:26,198 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:26,198 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:26,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 07:46:26,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:26,399 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:26,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:26,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1880922072, now seen corresponding path program 1 times [2025-02-08 07:46:26,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:26,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114812280] [2025-02-08 07:46:26,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:26,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:26,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:26,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:26,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 07:46:26,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 07:46:26,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 07:46:26,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:26,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:26,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:46:26,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:26,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:46:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:26,566 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:26,567 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:26,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114812280] [2025-02-08 07:46:26,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114812280] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:26,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:26,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617030748] [2025-02-08 07:46:26,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:26,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:46:26,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:26,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:46:26,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:26,569 INFO L87 Difference]: Start difference. First operand 996 states and 1053 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-02-08 07:46:28,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:28,441 INFO L93 Difference]: Finished difference Result 1478 states and 1569 transitions. [2025-02-08 07:46:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:46:28,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2025-02-08 07:46:28,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:28,446 INFO L225 Difference]: With dead ends: 1478 [2025-02-08 07:46:28,446 INFO L226 Difference]: Without dead ends: 1478 [2025-02-08 07:46:28,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:28,447 INFO L435 NwaCegarLoop]: 1162 mSDtfsCounter, 702 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:28,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1597 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-08 07:46:28,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2025-02-08 07:46:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1025. [2025-02-08 07:46:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 581 states have (on average 1.9087779690189328) internal successors, (1109), 1017 states have internal predecessors, (1109), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 07:46:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1119 transitions. [2025-02-08 07:46:28,476 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1119 transitions. Word has length 9 [2025-02-08 07:46:28,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:28,476 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1119 transitions. [2025-02-08 07:46:28,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-02-08 07:46:28,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1119 transitions. [2025-02-08 07:46:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 07:46:28,477 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:28,477 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:28,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 07:46:28,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:28,682 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:28,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:28,682 INFO L85 PathProgramCache]: Analyzing trace with hash -7201182, now seen corresponding path program 1 times [2025-02-08 07:46:28,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:28,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391605889] [2025-02-08 07:46:28,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:28,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:28,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:28,685 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:28,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 07:46:28,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 07:46:28,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 07:46:28,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:28,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:28,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:46:28,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:28,928 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_49| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49|)))) is different from true [2025-02-08 07:46:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:28,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:28,929 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:28,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391605889] [2025-02-08 07:46:28,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391605889] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:28,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:28,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:28,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985896562] [2025-02-08 07:46:28,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:28,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:28,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:28,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:28,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 07:46:28,930 INFO L87 Difference]: Start difference. First operand 1025 states and 1119 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2025-02-08 07:46:30,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:30,294 INFO L93 Difference]: Finished difference Result 1428 states and 1554 transitions. [2025-02-08 07:46:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:46:30,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 [2025-02-08 07:46:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:30,298 INFO L225 Difference]: With dead ends: 1428 [2025-02-08 07:46:30,298 INFO L226 Difference]: Without dead ends: 1427 [2025-02-08 07:46:30,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 07:46:30,299 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 419 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1468 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:30,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1423 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 654 Invalid, 0 Unknown, 1468 Unchecked, 1.3s Time] [2025-02-08 07:46:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2025-02-08 07:46:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1162. [2025-02-08 07:46:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 716 states have (on average 1.8868715083798884) internal successors, (1351), 1152 states have internal predecessors, (1351), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 07:46:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1365 transitions. [2025-02-08 07:46:30,317 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1365 transitions. Word has length 13 [2025-02-08 07:46:30,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:30,318 INFO L471 AbstractCegarLoop]: Abstraction has 1162 states and 1365 transitions. [2025-02-08 07:46:30,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2025-02-08 07:46:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1365 transitions. [2025-02-08 07:46:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 07:46:30,318 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:30,319 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:30,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 07:46:30,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:30,519 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:30,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:30,520 INFO L85 PathProgramCache]: Analyzing trace with hash -7200861, now seen corresponding path program 1 times [2025-02-08 07:46:30,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:30,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45844370] [2025-02-08 07:46:30,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:30,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:30,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:30,522 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:30,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 07:46:30,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 07:46:30,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 07:46:30,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:30,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:30,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 07:46:30,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:30,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:30,720 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:30,720 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:30,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45844370] [2025-02-08 07:46:30,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45844370] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:30,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:30,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:46:30,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938238761] [2025-02-08 07:46:30,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:30,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:30,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:30,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:30,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:30,722 INFO L87 Difference]: Start difference. First operand 1162 states and 1365 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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) [2025-02-08 07:46:31,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:31,237 INFO L93 Difference]: Finished difference Result 1541 states and 1751 transitions. [2025-02-08 07:46:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:46:31,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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 [2025-02-08 07:46:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:31,249 INFO L225 Difference]: With dead ends: 1541 [2025-02-08 07:46:31,249 INFO L226 Difference]: Without dead ends: 1539 [2025-02-08 07:46:31,250 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 [2025-02-08 07:46:31,251 INFO L435 NwaCegarLoop]: 1104 mSDtfsCounter, 451 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:31,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 3056 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 07:46:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2025-02-08 07:46:31,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1359. [2025-02-08 07:46:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 913 states have (on average 1.87842278203724) internal successors, (1715), 1349 states have internal predecessors, (1715), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 07:46:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1729 transitions. [2025-02-08 07:46:31,271 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1729 transitions. Word has length 13 [2025-02-08 07:46:31,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:31,271 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1729 transitions. [2025-02-08 07:46:31,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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) [2025-02-08 07:46:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1729 transitions. [2025-02-08 07:46:31,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 07:46:31,272 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:31,272 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:31,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 07:46:31,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:31,473 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr193REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:31,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:31,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2076411147, now seen corresponding path program 1 times [2025-02-08 07:46:31,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:31,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621111648] [2025-02-08 07:46:31,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:31,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:31,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:31,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:31,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 07:46:31,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 07:46:31,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 07:46:31,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:31,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:31,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:46:31,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:31,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:46:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:31,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:31,711 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:31,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621111648] [2025-02-08 07:46:31,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621111648] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:31,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:31,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:31,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751713697] [2025-02-08 07:46:31,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:31,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:31,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:31,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:31,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:31,714 INFO L87 Difference]: Start difference. First operand 1359 states and 1729 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:33,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:33,969 INFO L93 Difference]: Finished difference Result 1862 states and 2354 transitions. [2025-02-08 07:46:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:46:33,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 07:46:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:33,974 INFO L225 Difference]: With dead ends: 1862 [2025-02-08 07:46:33,974 INFO L226 Difference]: Without dead ends: 1862 [2025-02-08 07:46:33,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:46:33,974 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 431 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:33,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1911 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-08 07:46:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2025-02-08 07:46:33,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1651. [2025-02-08 07:46:33,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1203 states have (on average 1.8786367414796343) internal successors, (2260), 1639 states have internal predecessors, (2260), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:46:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2278 transitions. [2025-02-08 07:46:34,003 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2278 transitions. Word has length 15 [2025-02-08 07:46:34,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:34,004 INFO L471 AbstractCegarLoop]: Abstraction has 1651 states and 2278 transitions. [2025-02-08 07:46:34,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2278 transitions. [2025-02-08 07:46:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 07:46:34,004 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:34,004 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:34,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 07:46:34,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:34,205 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr192REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:34,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:34,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2076411146, now seen corresponding path program 1 times [2025-02-08 07:46:34,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:34,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157888227] [2025-02-08 07:46:34,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:34,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:34,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:34,208 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:34,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 07:46:34,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 07:46:34,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 07:46:34,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:34,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:34,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:46:34,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:34,348 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 7 [2025-02-08 07:46:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:34,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:34,398 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:34,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157888227] [2025-02-08 07:46:34,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157888227] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:34,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:34,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:34,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120354605] [2025-02-08 07:46:34,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:34,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:34,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:34,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:34,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:34,399 INFO L87 Difference]: Start difference. First operand 1651 states and 2278 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:35,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:35,833 INFO L93 Difference]: Finished difference Result 1661 states and 2244 transitions. [2025-02-08 07:46:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:46:35,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 07:46:35,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:35,837 INFO L225 Difference]: With dead ends: 1661 [2025-02-08 07:46:35,837 INFO L226 Difference]: Without dead ends: 1661 [2025-02-08 07:46:35,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:46:35,838 INFO L435 NwaCegarLoop]: 596 mSDtfsCounter, 970 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:35,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1150 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-08 07:46:35,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2025-02-08 07:46:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1628. [2025-02-08 07:46:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1203 states have (on average 1.8204488778054864) internal successors, (2190), 1616 states have internal predecessors, (2190), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:46:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2208 transitions. [2025-02-08 07:46:35,863 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2208 transitions. Word has length 15 [2025-02-08 07:46:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:35,863 INFO L471 AbstractCegarLoop]: Abstraction has 1628 states and 2208 transitions. [2025-02-08 07:46:35,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2208 transitions. [2025-02-08 07:46:35,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 07:46:35,864 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:35,864 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:35,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 07:46:36,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:36,065 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr169REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:36,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:36,065 INFO L85 PathProgramCache]: Analyzing trace with hash -55808121, now seen corresponding path program 1 times [2025-02-08 07:46:36,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:36,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788866678] [2025-02-08 07:46:36,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:36,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:36,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:36,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:36,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 07:46:36,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 07:46:36,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 07:46:36,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:36,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:36,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:46:36,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:36,215 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:36,215 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:36,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788866678] [2025-02-08 07:46:36,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788866678] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:36,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:36,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:46:36,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212538346] [2025-02-08 07:46:36,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:36,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:36,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:36,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:36,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:36,216 INFO L87 Difference]: Start difference. First operand 1628 states and 2208 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:36,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:36,300 INFO L93 Difference]: Finished difference Result 1562 states and 2083 transitions. [2025-02-08 07:46:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:46:36,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2025-02-08 07:46:36,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:36,308 INFO L225 Difference]: With dead ends: 1562 [2025-02-08 07:46:36,308 INFO L226 Difference]: Without dead ends: 1562 [2025-02-08 07:46:36,308 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 [2025-02-08 07:46:36,309 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 45 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:36,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2770 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:46:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2025-02-08 07:46:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2025-02-08 07:46:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1156 states have (on average 1.7863321799307958) internal successors, (2065), 1550 states have internal predecessors, (2065), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:46:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2083 transitions. [2025-02-08 07:46:36,340 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2083 transitions. Word has length 16 [2025-02-08 07:46:36,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:36,340 INFO L471 AbstractCegarLoop]: Abstraction has 1562 states and 2083 transitions. [2025-02-08 07:46:36,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:36,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2083 transitions. [2025-02-08 07:46:36,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 07:46:36,340 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:36,340 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:36,353 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 [2025-02-08 07:46:36,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:36,541 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr508REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:36,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1380000234, now seen corresponding path program 1 times [2025-02-08 07:46:36,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:36,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990647779] [2025-02-08 07:46:36,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:36,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:36,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:36,544 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:36,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 07:46:36,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 07:46:36,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 07:46:36,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:36,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:36,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:46:36,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:36,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:46:36,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:36,747 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:36,747 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:36,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990647779] [2025-02-08 07:46:36,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990647779] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:36,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:36,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:46:36,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073645890] [2025-02-08 07:46:36,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:36,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:36,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:36,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:36,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:36,749 INFO L87 Difference]: Start difference. First operand 1562 states and 2083 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:38,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:38,664 INFO L93 Difference]: Finished difference Result 2002 states and 2628 transitions. [2025-02-08 07:46:38,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:46:38,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-02-08 07:46:38,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:38,668 INFO L225 Difference]: With dead ends: 2002 [2025-02-08 07:46:38,668 INFO L226 Difference]: Without dead ends: 2002 [2025-02-08 07:46:38,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:46:38,669 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 905 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:38,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1641 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-08 07:46:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2025-02-08 07:46:38,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1539. [2025-02-08 07:46:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1156 states have (on average 1.7465397923875432) internal successors, (2019), 1527 states have internal predecessors, (2019), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:46:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 2037 transitions. [2025-02-08 07:46:38,690 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 2037 transitions. Word has length 19 [2025-02-08 07:46:38,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:38,691 INFO L471 AbstractCegarLoop]: Abstraction has 1539 states and 2037 transitions. [2025-02-08 07:46:38,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:38,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 2037 transitions. [2025-02-08 07:46:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 07:46:38,692 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:38,692 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:38,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 07:46:38,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:38,895 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:38,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1380000235, now seen corresponding path program 1 times [2025-02-08 07:46:38,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:38,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765981] [2025-02-08 07:46:38,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:38,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:38,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:38,899 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:38,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 07:46:39,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 07:46:39,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 07:46:39,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:39,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:39,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:46:39,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:39,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:46:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:39,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:39,169 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:39,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765981] [2025-02-08 07:46:39,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765981] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:39,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:39,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:46:39,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045282975] [2025-02-08 07:46:39,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:39,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:39,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:39,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:39,170 INFO L87 Difference]: Start difference. First operand 1539 states and 2037 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:41,330 INFO L93 Difference]: Finished difference Result 2189 states and 2807 transitions. [2025-02-08 07:46:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:46:41,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-02-08 07:46:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:41,335 INFO L225 Difference]: With dead ends: 2189 [2025-02-08 07:46:41,335 INFO L226 Difference]: Without dead ends: 2189 [2025-02-08 07:46:41,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:46:41,336 INFO L435 NwaCegarLoop]: 1103 mSDtfsCounter, 739 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:41,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 2225 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-08 07:46:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2025-02-08 07:46:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 1653. [2025-02-08 07:46:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1270 states have (on average 1.6984251968503936) internal successors, (2157), 1641 states have internal predecessors, (2157), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:46:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2175 transitions. [2025-02-08 07:46:41,360 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2175 transitions. Word has length 19 [2025-02-08 07:46:41,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:41,360 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2175 transitions. [2025-02-08 07:46:41,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:41,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2175 transitions. [2025-02-08 07:46:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-08 07:46:41,362 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:41,362 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] [2025-02-08 07:46:41,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-08 07:46:41,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:41,566 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:41,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:41,566 INFO L85 PathProgramCache]: Analyzing trace with hash -212335079, now seen corresponding path program 1 times [2025-02-08 07:46:41,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:41,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417056265] [2025-02-08 07:46:41,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:41,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:41,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:41,571 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:41,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 07:46:41,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 07:46:41,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 07:46:41,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:41,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:41,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:46:41,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:41,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:46:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:41,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:46:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:42,383 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:42,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417056265] [2025-02-08 07:46:42,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417056265] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:46:42,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:46:42,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 07:46:42,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423345454] [2025-02-08 07:46:42,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:46:42,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:46:42,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:42,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:46:42,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:46:42,385 INFO L87 Difference]: Start difference. First operand 1653 states and 2175 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:48,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:48,490 INFO L93 Difference]: Finished difference Result 2545 states and 3297 transitions. [2025-02-08 07:46:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 07:46:48,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 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 38 [2025-02-08 07:46:48,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:48,495 INFO L225 Difference]: With dead ends: 2545 [2025-02-08 07:46:48,496 INFO L226 Difference]: Without dead ends: 2545 [2025-02-08 07:46:48,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-08 07:46:48,496 INFO L435 NwaCegarLoop]: 1130 mSDtfsCounter, 2214 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 3756 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:48,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2216 Valid, 3756 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2025-02-08 07:46:48,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2025-02-08 07:46:48,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1817. [2025-02-08 07:46:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1434 states have (on average 1.6659693165969316) internal successors, (2389), 1805 states have internal predecessors, (2389), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:46:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2407 transitions. [2025-02-08 07:46:48,519 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2407 transitions. Word has length 38 [2025-02-08 07:46:48,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:48,519 INFO L471 AbstractCegarLoop]: Abstraction has 1817 states and 2407 transitions. [2025-02-08 07:46:48,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:48,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2407 transitions. [2025-02-08 07:46:48,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-08 07:46:48,521 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:48,521 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] [2025-02-08 07:46:48,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-08 07:46:48,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:48,722 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:48,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:48,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1482816140, now seen corresponding path program 1 times [2025-02-08 07:46:48,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:48,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079604320] [2025-02-08 07:46:48,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:48,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:48,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:48,724 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:48,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 07:46:48,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-08 07:46:48,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-08 07:46:48,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:48,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:48,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:46:48,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:48,902 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:48,902 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:48,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079604320] [2025-02-08 07:46:48,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079604320] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:48,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:48,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:46:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701677422] [2025-02-08 07:46:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:48,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:46:48,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:48,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:46:48,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:48,905 INFO L87 Difference]: Start difference. First operand 1817 states and 2407 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:48,966 INFO L93 Difference]: Finished difference Result 1600 states and 1852 transitions. [2025-02-08 07:46:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:46:48,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2025-02-08 07:46:48,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:48,979 INFO L225 Difference]: With dead ends: 1600 [2025-02-08 07:46:48,979 INFO L226 Difference]: Without dead ends: 1600 [2025-02-08 07:46:48,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:48,981 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 107 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:48,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1850 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:46:48,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2025-02-08 07:46:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1431. [2025-02-08 07:46:48,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1050 states have (on average 1.5714285714285714) internal successors, (1650), 1421 states have internal predecessors, (1650), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 07:46:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1664 transitions. [2025-02-08 07:46:48,992 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1664 transitions. Word has length 49 [2025-02-08 07:46:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:48,992 INFO L471 AbstractCegarLoop]: Abstraction has 1431 states and 1664 transitions. [2025-02-08 07:46:48,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1664 transitions. [2025-02-08 07:46:48,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-08 07:46:48,993 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:48,994 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:49,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 07:46:49,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:49,194 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:49,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:49,195 INFO L85 PathProgramCache]: Analyzing trace with hash 109827129, now seen corresponding path program 1 times [2025-02-08 07:46:49,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:49,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294163450] [2025-02-08 07:46:49,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:49,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:49,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:49,197 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:49,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 07:46:49,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-08 07:46:49,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-08 07:46:49,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:49,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:49,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:46:49,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:49,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:49,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:49,381 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:49,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294163450] [2025-02-08 07:46:49,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294163450] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:49,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:49,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:46:49,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478423339] [2025-02-08 07:46:49,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:49,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:49,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:49,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:49,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:49,382 INFO L87 Difference]: Start difference. First operand 1431 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-02-08 07:46:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:49,423 INFO L93 Difference]: Finished difference Result 1413 states and 1634 transitions. [2025-02-08 07:46:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:46:49,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 52 [2025-02-08 07:46:49,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:49,428 INFO L225 Difference]: With dead ends: 1413 [2025-02-08 07:46:49,428 INFO L226 Difference]: Without dead ends: 1413 [2025-02-08 07:46:49,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:46:49,428 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 27 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:49,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2693 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:46:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2025-02-08 07:46:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1413. [2025-02-08 07:46:49,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1032 states have (on average 1.569767441860465) internal successors, (1620), 1403 states have internal predecessors, (1620), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 07:46:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1634 transitions. [2025-02-08 07:46:49,445 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1634 transitions. Word has length 52 [2025-02-08 07:46:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:49,445 INFO L471 AbstractCegarLoop]: Abstraction has 1413 states and 1634 transitions. [2025-02-08 07:46:49,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-02-08 07:46:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1634 transitions. [2025-02-08 07:46:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-08 07:46:49,446 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:49,446 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:49,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 07:46:49,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:49,647 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:49,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:49,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1372573612, now seen corresponding path program 1 times [2025-02-08 07:46:49,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:49,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290220813] [2025-02-08 07:46:49,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:49,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:49,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:49,651 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:49,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 07:46:49,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-08 07:46:49,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 07:46:49,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:49,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:49,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:46:49,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:49,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:49,865 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:49,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290220813] [2025-02-08 07:46:49,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290220813] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:49,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:49,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:46:49,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107103647] [2025-02-08 07:46:49,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:49,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:49,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:49,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:49,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:49,867 INFO L87 Difference]: Start difference. First operand 1413 states and 1634 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:49,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:49,929 INFO L93 Difference]: Finished difference Result 1102 states and 1198 transitions. [2025-02-08 07:46:49,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:46:49,930 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), 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 54 [2025-02-08 07:46:49,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:49,933 INFO L225 Difference]: With dead ends: 1102 [2025-02-08 07:46:49,933 INFO L226 Difference]: Without dead ends: 1102 [2025-02-08 07:46:49,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:46:49,933 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 56 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:49,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2519 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:46:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2025-02-08 07:46:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1100. [2025-02-08 07:46:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 742 states have (on average 1.5929919137466306) internal successors, (1182), 1090 states have internal predecessors, (1182), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 07:46:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1196 transitions. [2025-02-08 07:46:49,942 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1196 transitions. Word has length 54 [2025-02-08 07:46:49,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:49,943 INFO L471 AbstractCegarLoop]: Abstraction has 1100 states and 1196 transitions. [2025-02-08 07:46:49,943 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1196 transitions. [2025-02-08 07:46:49,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 07:46:49,944 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:49,944 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] [2025-02-08 07:46:49,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 07:46:50,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:50,144 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:50,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:50,145 INFO L85 PathProgramCache]: Analyzing trace with hash -396913407, now seen corresponding path program 1 times [2025-02-08 07:46:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:50,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150955495] [2025-02-08 07:46:50,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:50,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:50,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:50,147 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:50,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 07:46:50,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 07:46:50,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 07:46:50,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:50,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:50,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:46:50,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:50,314 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:46:50,315 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:46:50,316 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:46:50,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-02-08 07:46:50,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 07:46:50,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-02-08 07:46:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:50,420 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:50,420 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:50,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150955495] [2025-02-08 07:46:50,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150955495] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:50,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:50,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 07:46:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589955882] [2025-02-08 07:46:50,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:50,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 07:46:50,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:50,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 07:46:50,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:46:50,422 INFO L87 Difference]: Start difference. First operand 1100 states and 1196 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2025-02-08 07:46:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:50,705 INFO L93 Difference]: Finished difference Result 1779 states and 1911 transitions. [2025-02-08 07:46:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 07:46:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 60 [2025-02-08 07:46:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:50,710 INFO L225 Difference]: With dead ends: 1779 [2025-02-08 07:46:50,710 INFO L226 Difference]: Without dead ends: 1775 [2025-02-08 07:46:50,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:46:50,711 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 1642 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 4079 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:50,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 4079 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 07:46:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2025-02-08 07:46:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1047. [2025-02-08 07:46:50,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 690 states have (on average 1.636231884057971) internal successors, (1129), 1038 states have internal predecessors, (1129), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 07:46:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1141 transitions. [2025-02-08 07:46:50,724 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1141 transitions. Word has length 60 [2025-02-08 07:46:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:50,724 INFO L471 AbstractCegarLoop]: Abstraction has 1047 states and 1141 transitions. [2025-02-08 07:46:50,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2025-02-08 07:46:50,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1141 transitions. [2025-02-08 07:46:50,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 07:46:50,725 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:50,725 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] [2025-02-08 07:46:50,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 07:46:50,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:50,926 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:50,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:50,926 INFO L85 PathProgramCache]: Analyzing trace with hash -699820772, now seen corresponding path program 1 times [2025-02-08 07:46:50,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:50,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123525179] [2025-02-08 07:46:50,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:50,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:50,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:50,928 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:50,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 07:46:51,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 07:46:51,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 07:46:51,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:51,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:51,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:46:51,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:51,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:46:51,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:46:51,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 07:46:51,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 07:46:51,607 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:46:51,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 07:46:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:51,614 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:51,614 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123525179] [2025-02-08 07:46:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123525179] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:51,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:51,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:46:51,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483548257] [2025-02-08 07:46:51,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:51,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:51,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:51,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:51,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:51,615 INFO L87 Difference]: Start difference. First operand 1047 states and 1141 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:53,078 INFO L93 Difference]: Finished difference Result 1384 states and 1502 transitions. [2025-02-08 07:46:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:46:53,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2025-02-08 07:46:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:53,081 INFO L225 Difference]: With dead ends: 1384 [2025-02-08 07:46:53,082 INFO L226 Difference]: Without dead ends: 1384 [2025-02-08 07:46:53,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:53,082 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 1075 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:53,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 486 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-08 07:46:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2025-02-08 07:46:53,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 970. [2025-02-08 07:46:53,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 651 states have (on average 1.5591397849462365) internal successors, (1015), 961 states have internal predecessors, (1015), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 07:46:53,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1027 transitions. [2025-02-08 07:46:53,091 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1027 transitions. Word has length 62 [2025-02-08 07:46:53,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:53,092 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1027 transitions. [2025-02-08 07:46:53,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:53,092 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1027 transitions. [2025-02-08 07:46:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-08 07:46:53,092 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:53,092 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] [2025-02-08 07:46:53,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 07:46:53,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:53,293 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:53,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:53,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1402426709, now seen corresponding path program 1 times [2025-02-08 07:46:53,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:53,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893513969] [2025-02-08 07:46:53,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:53,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:53,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:53,296 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:53,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 07:46:53,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-08 07:46:53,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 07:46:53,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:53,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:53,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:46:53,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:53,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:46:53,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 07:46:53,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-08 07:46:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:53,551 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:53,551 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:53,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893513969] [2025-02-08 07:46:53,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893513969] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:53,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:53,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:46:53,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890519199] [2025-02-08 07:46:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:53,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:46:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:53,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:46:53,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:46:53,553 INFO L87 Difference]: Start difference. First operand 970 states and 1027 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:54,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:54,858 INFO L93 Difference]: Finished difference Result 969 states and 1026 transitions. [2025-02-08 07:46:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 07:46:54,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2025-02-08 07:46:54,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:54,860 INFO L225 Difference]: With dead ends: 969 [2025-02-08 07:46:54,860 INFO L226 Difference]: Without dead ends: 969 [2025-02-08 07:46:54,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:46:54,861 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 2 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:54,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2185 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 07:46:54,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2025-02-08 07:46:54,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2025-02-08 07:46:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 651 states have (on average 1.5576036866359446) internal successors, (1014), 960 states have internal predecessors, (1014), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 07:46:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1026 transitions. [2025-02-08 07:46:54,869 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1026 transitions. Word has length 67 [2025-02-08 07:46:54,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:54,869 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1026 transitions. [2025-02-08 07:46:54,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:54,869 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1026 transitions. [2025-02-08 07:46:54,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-08 07:46:54,869 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:54,869 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] [2025-02-08 07:46:54,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 07:46:55,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:55,070 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:55,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:55,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1402426710, now seen corresponding path program 1 times [2025-02-08 07:46:55,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:55,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884832206] [2025-02-08 07:46:55,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:55,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:55,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:55,073 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:55,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 07:46:55,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-08 07:46:55,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 07:46:55,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:55,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:55,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 07:46:55,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:55,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:46:55,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 07:46:55,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 07:46:55,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-08 07:46:55,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:55,359 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:55,359 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:55,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884832206] [2025-02-08 07:46:55,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884832206] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:55,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:55,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:46:55,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427931626] [2025-02-08 07:46:55,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:55,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:46:55,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:55,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:46:55,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:46:55,360 INFO L87 Difference]: Start difference. First operand 969 states and 1026 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:57,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:57,124 INFO L93 Difference]: Finished difference Result 968 states and 1025 transitions. [2025-02-08 07:46:57,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 07:46:57,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2025-02-08 07:46:57,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:57,126 INFO L225 Difference]: With dead ends: 968 [2025-02-08 07:46:57,126 INFO L226 Difference]: Without dead ends: 968 [2025-02-08 07:46:57,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:46:57,127 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 1 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:57,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2208 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-08 07:46:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2025-02-08 07:46:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2025-02-08 07:46:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 650 states have (on average 1.5584615384615386) internal successors, (1013), 959 states have internal predecessors, (1013), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 07:46:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1025 transitions. [2025-02-08 07:46:57,137 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1025 transitions. Word has length 67 [2025-02-08 07:46:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:57,137 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1025 transitions. [2025-02-08 07:46:57,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:57,137 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1025 transitions. [2025-02-08 07:46:57,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-08 07:46:57,138 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:57,138 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] [2025-02-08 07:46:57,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 07:46:57,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:57,339 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr416REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:57,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:57,339 INFO L85 PathProgramCache]: Analyzing trace with hash 119947730, now seen corresponding path program 1 times [2025-02-08 07:46:57,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:57,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045532705] [2025-02-08 07:46:57,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:57,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:57,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:57,343 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:57,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 07:46:57,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-08 07:46:57,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-08 07:46:57,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:57,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:57,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 07:46:57,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:57,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 07:46:57,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-08 07:46:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:46:57,642 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:57,642 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:57,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045532705] [2025-02-08 07:46:57,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045532705] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:57,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:57,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 07:46:57,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495855264] [2025-02-08 07:46:57,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:57,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 07:46:57,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:57,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 07:46:57,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 07:46:57,644 INFO L87 Difference]: Start difference. First operand 968 states and 1025 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 07:46:59,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:59,625 INFO L93 Difference]: Finished difference Result 980 states and 1040 transitions. [2025-02-08 07:46:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 07:46:59,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-08 07:46:59,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:59,629 INFO L225 Difference]: With dead ends: 980 [2025-02-08 07:46:59,629 INFO L226 Difference]: Without dead ends: 980 [2025-02-08 07:46:59,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-08 07:46:59,631 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 12 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:59,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3461 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-08 07:46:59,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2025-02-08 07:46:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 974. [2025-02-08 07:46:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 655 states have (on average 1.5572519083969465) internal successors, (1020), 964 states have internal predecessors, (1020), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-08 07:46:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1035 transitions. [2025-02-08 07:46:59,643 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1035 transitions. Word has length 75 [2025-02-08 07:46:59,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:59,643 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1035 transitions. [2025-02-08 07:46:59,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 07:46:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1035 transitions. [2025-02-08 07:46:59,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-08 07:46:59,644 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:59,644 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] [2025-02-08 07:46:59,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-08 07:46:59,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:59,855 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:46:59,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:59,855 INFO L85 PathProgramCache]: Analyzing trace with hash 119947731, now seen corresponding path program 1 times [2025-02-08 07:46:59,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:59,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343621798] [2025-02-08 07:46:59,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:59,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:59,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:59,858 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:46:59,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 07:46:59,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-08 07:47:00,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-08 07:47:00,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:00,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:00,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:47:00,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:00,090 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:00,090 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:00,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343621798] [2025-02-08 07:47:00,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343621798] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:00,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:00,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:47:00,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710821190] [2025-02-08 07:47:00,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:00,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:00,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:00,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:00,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:00,091 INFO L87 Difference]: Start difference. First operand 974 states and 1035 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 07:47:00,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:00,115 INFO L93 Difference]: Finished difference Result 971 states and 1029 transitions. [2025-02-08 07:47:00,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:47:00,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-08 07:47:00,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:00,118 INFO L225 Difference]: With dead ends: 971 [2025-02-08 07:47:00,118 INFO L226 Difference]: Without dead ends: 971 [2025-02-08 07:47:00,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:00,119 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 0 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:00,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2503 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:47:00,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2025-02-08 07:47:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2025-02-08 07:47:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 652 states have (on average 1.5582822085889572) internal successors, (1016), 962 states have internal predecessors, (1016), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-08 07:47:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1029 transitions. [2025-02-08 07:47:00,133 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1029 transitions. Word has length 75 [2025-02-08 07:47:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:00,134 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1029 transitions. [2025-02-08 07:47:00,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 07:47:00,134 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1029 transitions. [2025-02-08 07:47:00,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-08 07:47:00,135 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:00,135 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] [2025-02-08 07:47:00,149 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 [2025-02-08 07:47:00,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:00,336 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr416REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:47:00,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:00,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1644036175, now seen corresponding path program 1 times [2025-02-08 07:47:00,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:00,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314837640] [2025-02-08 07:47:00,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:00,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:00,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:00,338 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:00,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 07:47:00,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-08 07:47:00,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 07:47:00,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:00,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:00,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:47:00,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:00,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:47:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:00,692 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314837640] [2025-02-08 07:47:00,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314837640] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:47:00,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:47:00,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-08 07:47:00,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382374217] [2025-02-08 07:47:00,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:47:00,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:47:00,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:00,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:47:00,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:47:00,696 INFO L87 Difference]: Start difference. First operand 971 states and 1029 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 07:47:00,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:00,823 INFO L93 Difference]: Finished difference Result 983 states and 1046 transitions. [2025-02-08 07:47:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 07:47:00,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2025-02-08 07:47:00,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:00,827 INFO L225 Difference]: With dead ends: 983 [2025-02-08 07:47:00,827 INFO L226 Difference]: Without dead ends: 983 [2025-02-08 07:47:00,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-08 07:47:00,827 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 8 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:00,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3337 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:47:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2025-02-08 07:47:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2025-02-08 07:47:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 661 states have (on average 1.5597579425113464) internal successors, (1031), 971 states have internal predecessors, (1031), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-08 07:47:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1044 transitions. [2025-02-08 07:47:00,845 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1044 transitions. Word has length 76 [2025-02-08 07:47:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:00,845 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1044 transitions. [2025-02-08 07:47:00,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 07:47:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1044 transitions. [2025-02-08 07:47:00,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-08 07:47:00,846 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:00,846 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] [2025-02-08 07:47:00,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 07:47:01,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:01,051 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr416REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 07:47:01,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:01,052 INFO L85 PathProgramCache]: Analyzing trace with hash -564102894, now seen corresponding path program 2 times [2025-02-08 07:47:01,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:01,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421251093] [2025-02-08 07:47:01,052 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 07:47:01,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:01,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:01,054 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:01,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 07:47:01,212 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-08 07:47:29,282 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 07:47:29,282 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 07:47:29,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:29,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 07:47:29,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:29,408 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:47:29,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 07:47:29,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 07:47:29,551 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 07:47:29,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-08 07:47:29,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-02-08 07:47:29,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 07:47:29,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:47:29,672 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-08 07:47:29,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-02-08 07:47:29,705 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:29,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421251093] [2025-02-08 07:47:29,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421251093] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 07:47:29,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [218287272] [2025-02-08 07:47:29,705 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 07:47:29,706 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 07:47:29,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 07:47:29,726 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 07:47:29,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2025-02-08 07:47:29,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-08 07:47:30,831 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 07:47:30,831 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 07:47:30,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:30,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:47:30,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:30,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:47:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:31,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [218287272] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:47:31,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 07:47:31,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-02-08 07:47:31,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489491472] [2025-02-08 07:47:31,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 07:47:31,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 07:47:31,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:31,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 07:47:31,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=505, Unknown=6, NotChecked=0, Total=600 [2025-02-08 07:47:31,205 INFO L87 Difference]: Start difference. First operand 981 states and 1044 transitions. Second operand has 23 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)