./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:21:36,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:21:36,972 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:21:36,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:21:36,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:21:36,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:21:37,000 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:21:37,000 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:21:37,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:21:37,000 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:21:37,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:21:37,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:21:37,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:21:37,002 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:21:37,002 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:21:37,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:21:37,002 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:21:37,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:21:37,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:21:37,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:21:37,002 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:21:37,003 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:21:37,003 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:21:37,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:21:37,003 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:21:37,003 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:21:37,003 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:21:37,003 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:21:37,003 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:21:37,003 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:21:37,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:21:37,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:21:37,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:21:37,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:21:37,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:21:37,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:21:37,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:21:37,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:21:37,004 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:21:37,004 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:21:37,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:21:37,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:21:37,005 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 -> e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd [2025-02-06 12:21:37,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:21:37,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:21:37,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:21:37,238 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:21:37,238 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:21:37,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2025-02-06 12:21:38,510 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a259af4f8/c085a1c7d6ac465681c1ed1c73493f8d/FLAG92dbd2aae [2025-02-06 12:21:38,855 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:21:38,856 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2025-02-06 12:21:38,874 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a259af4f8/c085a1c7d6ac465681c1ed1c73493f8d/FLAG92dbd2aae [2025-02-06 12:21:38,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a259af4f8/c085a1c7d6ac465681c1ed1c73493f8d [2025-02-06 12:21:38,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:21:38,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:21:38,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:21:38,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:21:38,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:21:38,919 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:21:38" (1/1) ... [2025-02-06 12:21:38,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b328b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:38, skipping insertion in model container [2025-02-06 12:21:38,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:21:38" (1/1) ... [2025-02-06 12:21:38,963 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:21:39,384 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,419 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,421 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,427 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,431 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,457 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,459 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,460 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,465 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,472 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,472 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,474 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,475 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,475 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,476 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,478 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:39,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:21:39,490 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-06 12:21:39,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@22c84a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:39, skipping insertion in model container [2025-02-06 12:21:39,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:21:39,491 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:21:39,492 INFO L158 Benchmark]: Toolchain (without parser) took 582.38ms. Allocated memory is still 167.8MB. Free memory was 130.8MB in the beginning and 110.1MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:21:39,492 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 226.5MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:21:39,492 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.20ms. Allocated memory is still 167.8MB. Free memory was 130.3MB in the beginning and 110.1MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:21:39,493 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 226.5MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 580.20ms. Allocated memory is still 167.8MB. Free memory was 130.3MB in the beginning and 110.1MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_OAT_test4-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:21:41,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:21:41,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:21:41,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:21:41,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:21:41,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:21:41,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:21:41,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:21:41,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:21:41,674 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:21:41,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:21:41,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:21:41,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:21:41,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:21:41,675 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:21:41,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:21:41,676 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:21:41,677 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:21:41,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:21:41,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:21:41,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:21:41,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:21:41,677 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:21:41,677 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:21:41,677 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:21:41,677 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:21:41,677 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:21:41,677 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:21:41,677 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:21:41,677 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:21:41,677 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 -> e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd [2025-02-06 12:21:41,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:21:41,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:21:41,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:21:41,950 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:21:41,950 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:21:41,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2025-02-06 12:21:43,857 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/730a213ff/6822054eefaf40ca862bfbff301cc2b9/FLAG3fc823027 [2025-02-06 12:21:44,062 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:21:44,062 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2025-02-06 12:21:44,077 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/730a213ff/6822054eefaf40ca862bfbff301cc2b9/FLAG3fc823027 [2025-02-06 12:21:44,086 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/730a213ff/6822054eefaf40ca862bfbff301cc2b9 [2025-02-06 12:21:44,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:21:44,089 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:21:44,090 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:21:44,090 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:21:44,093 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:21:44,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:44,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c812523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44, skipping insertion in model container [2025-02-06 12:21:44,094 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:44,130 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:21:44,412 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,437 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,440 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,443 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,448 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,480 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,483 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,487 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,495 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,510 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,514 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,516 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,516 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,518 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,519 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,523 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:21:44,550 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:21:44,560 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:21:44,595 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,607 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,615 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,616 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,621 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,643 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,644 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,646 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,649 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,657 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,661 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,662 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,663 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,663 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,663 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,665 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:21:44,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:21:44,679 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:21:44,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:21:44,822 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:21:44,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44 WrapperNode [2025-02-06 12:21:44,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:21:44,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:21:44,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:21:44,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:21:44,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:44,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:44,890 INFO L138 Inliner]: procedures = 179, calls = 387, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1298 [2025-02-06 12:21:44,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:21:44,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:21:44,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:21:44,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:21:44,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:44,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:44,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:45,020 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2025-02-06 12:21:45,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:45,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:45,066 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:45,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:45,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:45,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:45,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:21:45,086 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:21:45,086 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:21:45,086 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:21:45,087 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (1/1) ... [2025-02-06 12:21:45,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:21:45,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:21:45,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:21:45,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:21:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:21:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:21:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:21:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:21:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 12:21:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 12:21:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:21:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:21:45,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:21:45,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:21:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:21:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:21:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:21:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:21:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:21:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:21:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:21:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:21:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:21:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:21:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:21:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:21:45,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:21:45,323 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:21:45,324 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:21:48,445 INFO L? ?]: Removed 1544 outVars from TransFormulas that were not future-live. [2025-02-06 12:21:48,445 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:21:48,464 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:21:48,464 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:21:48,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:21:48 BoogieIcfgContainer [2025-02-06 12:21:48,465 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:21:48,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:21:48,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:21:48,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:21:48,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:21:44" (1/3) ... [2025-02-06 12:21:48,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d0ed89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:21:48, skipping insertion in model container [2025-02-06 12:21:48,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:21:44" (2/3) ... [2025-02-06 12:21:48,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d0ed89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:21:48, skipping insertion in model container [2025-02-06 12:21:48,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:21:48" (3/3) ... [2025-02-06 12:21:48,471 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-2.i [2025-02-06 12:21:48,479 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:21:48,480 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test4-2.i that has 4 procedures, 1463 locations, 1 initial locations, 41 loop locations, and 733 error locations. [2025-02-06 12:21:48,513 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:21:48,520 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;@19ca1769, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:21:48,520 INFO L334 AbstractCegarLoop]: Starting to check reachability of 733 error locations. [2025-02-06 12:21:48,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 1458 states, 712 states have (on average 2.2191011235955056) internal successors, (1580), 1449 states have internal predecessors, (1580), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 12:21:48,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:21:48,527 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:21:48,528 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:21:48,528 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr730REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:21:48,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:21:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1573617134, now seen corresponding path program 1 times [2025-02-06 12:21:48,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:21:48,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560499702] [2025-02-06 12:21:48,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:21:48,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:48,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:21:48,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:21:48,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 12:21:48,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:21:48,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:21:48,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:21:48,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:21:48,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:21:48,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:21:48,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:21:48,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:48,708 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:21:48,708 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:21:48,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560499702] [2025-02-06 12:21:48,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560499702] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:21:48,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:21:48,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:21:48,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037967660] [2025-02-06 12:21:48,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:21:48,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:21:48,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:21:48,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:21:48,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:21:48,750 INFO L87 Difference]: Start difference. First operand has 1458 states, 712 states have (on average 2.2191011235955056) internal successors, (1580), 1449 states have internal predecessors, (1580), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:21:50,277 INFO L93 Difference]: Finished difference Result 1346 states and 1430 transitions. [2025-02-06 12:21:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:21:50,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2025-02-06 12:21:50,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:21:50,294 INFO L225 Difference]: With dead ends: 1346 [2025-02-06 12:21:50,294 INFO L226 Difference]: Without dead ends: 1344 [2025-02-06 12:21:50,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:21:50,297 INFO L435 NwaCegarLoop]: 816 mSDtfsCounter, 1049 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:21:50,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 933 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 12:21:50,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2025-02-06 12:21:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1343. [2025-02-06 12:21:50,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 702 states have (on average 1.9857549857549857) internal successors, (1394), 1334 states have internal predecessors, (1394), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 12:21:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1426 transitions. [2025-02-06 12:21:50,371 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1426 transitions. Word has length 5 [2025-02-06 12:21:50,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:21:50,373 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 1426 transitions. [2025-02-06 12:21:50,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1426 transitions. [2025-02-06 12:21:50,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:21:50,373 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:21:50,373 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:21:50,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 12:21:50,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:50,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr731REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:21:50,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:21:50,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1573617135, now seen corresponding path program 1 times [2025-02-06 12:21:50,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:21:50,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484233683] [2025-02-06 12:21:50,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:21:50,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:50,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:21:50,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:21:50,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 12:21:50,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:21:50,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:21:50,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:21:50,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:21:50,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:21:50,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:21:50,801 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 [2025-02-06 12:21:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:50,837 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:21:50,837 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:21:50,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484233683] [2025-02-06 12:21:50,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484233683] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:21:50,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:21:50,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:21:50,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412032856] [2025-02-06 12:21:50,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:21:50,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:21:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:21:50,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:21:50,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:21:50,838 INFO L87 Difference]: Start difference. First operand 1343 states and 1426 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:52,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:21:52,886 INFO L93 Difference]: Finished difference Result 1667 states and 1770 transitions. [2025-02-06 12:21:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:21:52,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2025-02-06 12:21:52,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:21:52,898 INFO L225 Difference]: With dead ends: 1667 [2025-02-06 12:21:52,898 INFO L226 Difference]: Without dead ends: 1667 [2025-02-06 12:21:52,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:21:52,902 INFO L435 NwaCegarLoop]: 1180 mSDtfsCounter, 527 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:21:52,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1774 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:21:52,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2025-02-06 12:21:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1515. [2025-02-06 12:21:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 884 states have (on average 1.9445701357466063) internal successors, (1719), 1506 states have internal predecessors, (1719), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 12:21:52,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1751 transitions. [2025-02-06 12:21:52,961 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1751 transitions. Word has length 5 [2025-02-06 12:21:52,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:21:52,962 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 1751 transitions. [2025-02-06 12:21:52,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1751 transitions. [2025-02-06 12:21:52,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:21:52,962 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:21:52,962 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:21:52,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 12:21:53,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:53,167 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:21:53,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:21:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1572316305, now seen corresponding path program 1 times [2025-02-06 12:21:53,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:21:53,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703544391] [2025-02-06 12:21:53,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:21:53,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:53,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:21:53,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:21:53,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 12:21:53,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:21:53,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:21:53,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:21:53,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:21:53,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:21:53,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:21:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:53,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:21:53,335 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:21:53,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703544391] [2025-02-06 12:21:53,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703544391] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:21:53,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:21:53,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:21:53,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886126967] [2025-02-06 12:21:53,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:21:53,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:21:53,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:21:53,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:21:53,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:21:53,337 INFO L87 Difference]: Start difference. First operand 1515 states and 1751 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:53,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:21:53,891 INFO L93 Difference]: Finished difference Result 2302 states and 2672 transitions. [2025-02-06 12:21:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:21:53,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2025-02-06 12:21:53,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:21:53,897 INFO L225 Difference]: With dead ends: 2302 [2025-02-06 12:21:53,897 INFO L226 Difference]: Without dead ends: 2302 [2025-02-06 12:21:53,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:21:53,900 INFO L435 NwaCegarLoop]: 1413 mSDtfsCounter, 695 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:21:53,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 3995 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 12:21:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2025-02-06 12:21:53,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2003. [2025-02-06 12:21:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 1372 states have (on average 1.9198250728862973) internal successors, (2634), 1991 states have internal predecessors, (2634), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:21:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 2672 transitions. [2025-02-06 12:21:53,932 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 2672 transitions. Word has length 5 [2025-02-06 12:21:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:21:53,933 INFO L471 AbstractCegarLoop]: Abstraction has 2003 states and 2672 transitions. [2025-02-06 12:21:53,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:53,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 2672 transitions. [2025-02-06 12:21:53,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 12:21:53,933 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:21:53,933 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:21:53,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 12:21:54,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:54,137 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:21:54,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:21:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1497094036, now seen corresponding path program 1 times [2025-02-06 12:21:54,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:21:54,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010518795] [2025-02-06 12:21:54,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:21:54,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:54,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:21:54,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:21:54,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 12:21:54,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:21:54,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:21:54,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:21:54,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:21:54,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:21:54,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:21:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:54,278 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:21:54,279 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:21:54,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010518795] [2025-02-06 12:21:54,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010518795] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:21:54,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:21:54,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:21:54,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063237016] [2025-02-06 12:21:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:21:54,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:21:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:21:54,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:21:54,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:21:54,280 INFO L87 Difference]: Start difference. First operand 2003 states and 2672 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:54,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:21:54,417 INFO L93 Difference]: Finished difference Result 2081 states and 2617 transitions. [2025-02-06 12:21:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:21:54,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2025-02-06 12:21:54,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:21:54,423 INFO L225 Difference]: With dead ends: 2081 [2025-02-06 12:21:54,423 INFO L226 Difference]: Without dead ends: 2081 [2025-02-06 12:21:54,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:21:54,423 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 317 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:21:54,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 2837 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:21:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2025-02-06 12:21:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1863. [2025-02-06 12:21:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1232 states have (on average 1.9301948051948052) internal successors, (2378), 1851 states have internal predecessors, (2378), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:21:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2416 transitions. [2025-02-06 12:21:54,448 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2416 transitions. Word has length 6 [2025-02-06 12:21:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:21:54,448 INFO L471 AbstractCegarLoop]: Abstraction has 1863 states and 2416 transitions. [2025-02-06 12:21:54,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2416 transitions. [2025-02-06 12:21:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 12:21:54,448 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:21:54,448 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:21:54,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 12:21:54,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:54,653 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:21:54,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:21:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash -106707824, now seen corresponding path program 1 times [2025-02-06 12:21:54,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:21:54,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023138936] [2025-02-06 12:21:54,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:21:54,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:54,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:21:54,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:21:54,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 12:21:54,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:21:54,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:21:54,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:21:54,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:21:54,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 12:21:54,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:21:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:54,780 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:21:54,780 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:21:54,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023138936] [2025-02-06 12:21:54,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023138936] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:21:54,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:21:54,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:21:54,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377037959] [2025-02-06 12:21:54,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:21:54,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:21:54,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:21:54,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:21:54,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:21:54,781 INFO L87 Difference]: Start difference. First operand 1863 states and 2416 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:21:56,533 INFO L93 Difference]: Finished difference Result 2046 states and 2607 transitions. [2025-02-06 12:21:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:21:56,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-06 12:21:56,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:21:56,541 INFO L225 Difference]: With dead ends: 2046 [2025-02-06 12:21:56,541 INFO L226 Difference]: Without dead ends: 2045 [2025-02-06 12:21:56,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:21:56,542 INFO L435 NwaCegarLoop]: 1329 mSDtfsCounter, 187 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:21:56,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 2118 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 12:21:56,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2025-02-06 12:21:56,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1865. [2025-02-06 12:21:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1234 states have (on average 1.9286871961102108) internal successors, (2380), 1853 states have internal predecessors, (2380), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:21:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2418 transitions. [2025-02-06 12:21:56,598 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2418 transitions. Word has length 8 [2025-02-06 12:21:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:21:56,598 INFO L471 AbstractCegarLoop]: Abstraction has 1865 states and 2418 transitions. [2025-02-06 12:21:56,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:56,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2418 transitions. [2025-02-06 12:21:56,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:21:56,599 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:21:56,599 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:21:56,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 12:21:56,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:56,799 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:21:56,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:21:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash 987236270, now seen corresponding path program 1 times [2025-02-06 12:21:56,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:21:56,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582053910] [2025-02-06 12:21:56,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:21:56,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:56,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:21:56,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:21:56,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 12:21:56,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:21:56,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:21:56,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:21:56,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:21:56,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:21:56,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:21:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:56,967 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:21:56,967 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:21:56,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582053910] [2025-02-06 12:21:56,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582053910] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:21:56,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:21:56,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:21:56,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983280306] [2025-02-06 12:21:56,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:21:56,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:21:56,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:21:56,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:21:56,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:21:56,968 INFO L87 Difference]: Start difference. First operand 1865 states and 2418 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:21:57,713 INFO L93 Difference]: Finished difference Result 2083 states and 2618 transitions. [2025-02-06 12:21:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:21:57,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-06 12:21:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:21:57,720 INFO L225 Difference]: With dead ends: 2083 [2025-02-06 12:21:57,720 INFO L226 Difference]: Without dead ends: 2079 [2025-02-06 12:21:57,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:21:57,721 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 319 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 4107 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:21:57,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 4107 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 12:21:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2025-02-06 12:21:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 1861. [2025-02-06 12:21:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1230 states have (on average 1.9308943089430894) internal successors, (2375), 1849 states have internal predecessors, (2375), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:21:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2413 transitions. [2025-02-06 12:21:57,741 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2413 transitions. Word has length 9 [2025-02-06 12:21:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:21:57,742 INFO L471 AbstractCegarLoop]: Abstraction has 1861 states and 2413 transitions. [2025-02-06 12:21:57,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2413 transitions. [2025-02-06 12:21:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 12:21:57,742 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:21:57,742 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:21:57,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 12:21:57,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:57,944 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr726REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:21:57,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:21:57,944 INFO L85 PathProgramCache]: Analyzing trace with hash 313230247, now seen corresponding path program 1 times [2025-02-06 12:21:57,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:21:57,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704719889] [2025-02-06 12:21:57,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:21:57,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:57,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:21:57,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:21:57,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 12:21:58,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 12:21:58,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 12:21:58,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:21:58,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:21:58,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:21:58,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:21:58,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:21:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:58,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:21:58,121 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:21:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704719889] [2025-02-06 12:21:58,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704719889] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:21:58,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:21:58,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:21:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948899389] [2025-02-06 12:21:58,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:21:58,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:21:58,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:21:58,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:21:58,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:21:58,122 INFO L87 Difference]: Start difference. First operand 1861 states and 2413 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:21:59,912 INFO L93 Difference]: Finished difference Result 1846 states and 2375 transitions. [2025-02-06 12:21:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:21:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-06 12:21:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:21:59,917 INFO L225 Difference]: With dead ends: 1846 [2025-02-06 12:21:59,917 INFO L226 Difference]: Without dead ends: 1846 [2025-02-06 12:21:59,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:21:59,918 INFO L435 NwaCegarLoop]: 789 mSDtfsCounter, 1099 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:21:59,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 1499 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 12:21:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2025-02-06 12:21:59,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1838. [2025-02-06 12:21:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1230 states have (on average 1.8934959349593496) internal successors, (2329), 1826 states have internal predecessors, (2329), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:21:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2367 transitions. [2025-02-06 12:21:59,944 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2367 transitions. Word has length 11 [2025-02-06 12:21:59,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:21:59,944 INFO L471 AbstractCegarLoop]: Abstraction has 1838 states and 2367 transitions. [2025-02-06 12:21:59,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:21:59,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2367 transitions. [2025-02-06 12:21:59,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 12:21:59,945 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:21:59,945 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:21:59,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 12:22:00,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:00,149 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr727REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:22:00,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:22:00,150 INFO L85 PathProgramCache]: Analyzing trace with hash 313230248, now seen corresponding path program 1 times [2025-02-06 12:22:00,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:22:00,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213930959] [2025-02-06 12:22:00,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:22:00,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:00,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:22:00,153 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:22:00,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 12:22:00,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 12:22:00,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 12:22:00,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:22:00,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:22:00,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:22:00,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:22:00,284 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 [2025-02-06 12:22:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:00,329 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:22:00,329 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:22:00,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213930959] [2025-02-06 12:22:00,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213930959] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:22:00,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:22:00,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:22:00,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820528346] [2025-02-06 12:22:00,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:22:00,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:22:00,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:22:00,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:22:00,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:22:00,329 INFO L87 Difference]: Start difference. First operand 1838 states and 2367 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:22:02,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:22:02,796 INFO L93 Difference]: Finished difference Result 2120 states and 2540 transitions. [2025-02-06 12:22:02,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:22:02,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-06 12:22:02,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:22:02,801 INFO L225 Difference]: With dead ends: 2120 [2025-02-06 12:22:02,801 INFO L226 Difference]: Without dead ends: 2120 [2025-02-06 12:22:02,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:22:02,803 INFO L435 NwaCegarLoop]: 1468 mSDtfsCounter, 650 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:22:02,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 2929 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-06 12:22:02,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2025-02-06 12:22:02,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 1952. [2025-02-06 12:22:02,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1344 states have (on average 1.8355654761904763) internal successors, (2467), 1940 states have internal predecessors, (2467), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:22:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2505 transitions. [2025-02-06 12:22:02,847 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2505 transitions. Word has length 11 [2025-02-06 12:22:02,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:22:02,847 INFO L471 AbstractCegarLoop]: Abstraction has 1952 states and 2505 transitions. [2025-02-06 12:22:02,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:22:02,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2505 transitions. [2025-02-06 12:22:02,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-06 12:22:02,848 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:22:02,848 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] [2025-02-06 12:22:02,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 12:22:03,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:03,051 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr727REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:22:03,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:22:03,051 INFO L85 PathProgramCache]: Analyzing trace with hash -183983775, now seen corresponding path program 1 times [2025-02-06 12:22:03,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:22:03,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548473708] [2025-02-06 12:22:03,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:22:03,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:03,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:22:03,054 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:22:03,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 12:22:03,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 12:22:03,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 12:22:03,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:22:03,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:22:03,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:22:03,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:22:03,211 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 [2025-02-06 12:22:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:03,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:22:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:03,892 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:22:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548473708] [2025-02-06 12:22:03,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548473708] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:22:03,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:22:03,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:22:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470520850] [2025-02-06 12:22:03,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:22:03,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:22:03,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:22:03,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:22:03,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:22:03,893 INFO L87 Difference]: Start difference. First operand 1952 states and 2505 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:22:11,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:22:11,450 INFO L93 Difference]: Finished difference Result 2507 states and 3070 transitions. [2025-02-06 12:22:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:22:11,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 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 30 [2025-02-06 12:22:11,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:22:11,459 INFO L225 Difference]: With dead ends: 2507 [2025-02-06 12:22:11,459 INFO L226 Difference]: Without dead ends: 2507 [2025-02-06 12:22:11,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:22:11,460 INFO L435 NwaCegarLoop]: 1509 mSDtfsCounter, 1384 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 3407 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 4549 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:22:11,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 4549 Invalid, 3435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3407 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2025-02-06 12:22:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2025-02-06 12:22:11,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2116. [2025-02-06 12:22:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1508 states have (on average 1.789787798408488) internal successors, (2699), 2104 states have internal predecessors, (2699), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:22:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2737 transitions. [2025-02-06 12:22:11,505 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2737 transitions. Word has length 30 [2025-02-06 12:22:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:22:11,506 INFO L471 AbstractCegarLoop]: Abstraction has 2116 states and 2737 transitions. [2025-02-06 12:22:11,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:22:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2737 transitions. [2025-02-06 12:22:11,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-06 12:22:11,510 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:22:11,510 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] [2025-02-06 12:22:11,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 12:22:11,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:11,714 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr645REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:22:11,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:22:11,715 INFO L85 PathProgramCache]: Analyzing trace with hash 24944796, now seen corresponding path program 1 times [2025-02-06 12:22:11,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:22:11,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433500929] [2025-02-06 12:22:11,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:22:11,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:11,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:22:11,718 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:22:11,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 12:22:11,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 12:22:11,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 12:22:11,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:22:11,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:22:11,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:22:11,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:22:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:11,906 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:22:11,907 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:22:11,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433500929] [2025-02-06 12:22:11,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433500929] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:22:11,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:22:11,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:22:11,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476236081] [2025-02-06 12:22:11,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:22:11,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:22:11,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:22:11,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:22:11,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:22:11,908 INFO L87 Difference]: Start difference. First operand 2116 states and 2737 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:22:11,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:22:11,969 INFO L93 Difference]: Finished difference Result 1805 states and 2301 transitions. [2025-02-06 12:22:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:22:11,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2025-02-06 12:22:11,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:22:11,973 INFO L225 Difference]: With dead ends: 1805 [2025-02-06 12:22:11,973 INFO L226 Difference]: Without dead ends: 1805 [2025-02-06 12:22:11,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:22:11,974 INFO L435 NwaCegarLoop]: 1332 mSDtfsCounter, 56 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3923 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 [2025-02-06 12:22:11,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3923 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:22:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2025-02-06 12:22:11,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1803. [2025-02-06 12:22:11,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1218 states have (on average 1.8563218390804597) internal successors, (2261), 1791 states have internal predecessors, (2261), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:22:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2299 transitions. [2025-02-06 12:22:11,989 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2299 transitions. Word has length 46 [2025-02-06 12:22:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:22:11,989 INFO L471 AbstractCegarLoop]: Abstraction has 1803 states and 2299 transitions. [2025-02-06 12:22:11,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:22:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2299 transitions. [2025-02-06 12:22:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-06 12:22:11,990 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:22:11,990 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] [2025-02-06 12:22:11,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 12:22:12,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:12,191 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr645REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:22:12,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:22:12,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1292382180, now seen corresponding path program 1 times [2025-02-06 12:22:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:22:12,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773304135] [2025-02-06 12:22:12,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:22:12,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:12,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:22:12,198 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:22:12,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 12:22:12,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 12:22:12,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 12:22:12,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:22:12,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:22:12,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:22:12,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:22:12,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:22:12,405 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 [2025-02-06 12:22:12,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:22:12,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 12:22:12,738 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:22:12,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 12:22:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:12,753 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:22:12,753 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:22:12,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773304135] [2025-02-06 12:22:12,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773304135] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:22:12,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:22:12,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:22:12,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073429144] [2025-02-06 12:22:12,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:22:12,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:22:12,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:22:12,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:22:12,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:22:12,754 INFO L87 Difference]: Start difference. First operand 1803 states and 2299 transitions. Second operand has 4 states, 3 states have (on average 18.0) 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) [2025-02-06 12:22:14,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:22:14,349 INFO L93 Difference]: Finished difference Result 1719 states and 2174 transitions. [2025-02-06 12:22:14,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:22:14,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) 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 [2025-02-06 12:22:14,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:22:14,357 INFO L225 Difference]: With dead ends: 1719 [2025-02-06 12:22:14,357 INFO L226 Difference]: Without dead ends: 1719 [2025-02-06 12:22:14,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:22:14,358 INFO L435 NwaCegarLoop]: 592 mSDtfsCounter, 1820 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:22:14,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 754 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-06 12:22:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2025-02-06 12:22:14,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1537. [2025-02-06 12:22:14,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1036 states have (on average 1.7384169884169884) internal successors, (1801), 1525 states have internal predecessors, (1801), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:22:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 1839 transitions. [2025-02-06 12:22:14,378 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 1839 transitions. Word has length 54 [2025-02-06 12:22:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:22:14,378 INFO L471 AbstractCegarLoop]: Abstraction has 1537 states and 1839 transitions. [2025-02-06 12:22:14,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) 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) [2025-02-06 12:22:14,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 1839 transitions. [2025-02-06 12:22:14,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-06 12:22:14,381 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:22:14,382 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:22:14,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 12:22:14,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:14,586 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:22:14,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:22:14,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1661560814, now seen corresponding path program 1 times [2025-02-06 12:22:14,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:22:14,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043800112] [2025-02-06 12:22:14,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:22:14,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:14,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:22:14,590 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:22:14,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 12:22:14,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-06 12:22:14,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 12:22:14,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:22:14,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:22:14,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:22:14,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:22:14,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:22:14,811 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 [2025-02-06 12:22:14,841 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 [2025-02-06 12:22:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:14,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:22:14,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:22:14,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043800112] [2025-02-06 12:22:14,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043800112] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:22:14,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:22:14,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:22:14,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127932481] [2025-02-06 12:22:14,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:22:14,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:22:14,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:22:14,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:22:14,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:22:14,852 INFO L87 Difference]: Start difference. First operand 1537 states and 1839 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:22:16,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:22:16,880 INFO L93 Difference]: Finished difference Result 1536 states and 1837 transitions. [2025-02-06 12:22:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:22:16,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2025-02-06 12:22:16,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:22:16,885 INFO L225 Difference]: With dead ends: 1536 [2025-02-06 12:22:16,885 INFO L226 Difference]: Without dead ends: 1536 [2025-02-06 12:22:16,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:22:16,885 INFO L435 NwaCegarLoop]: 1258 mSDtfsCounter, 2 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:22:16,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3238 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:22:16,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2025-02-06 12:22:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1536. [2025-02-06 12:22:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1036 states have (on average 1.7364864864864864) internal successors, (1799), 1524 states have internal predecessors, (1799), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:22:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 1837 transitions. [2025-02-06 12:22:16,905 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 1837 transitions. Word has length 59 [2025-02-06 12:22:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:22:16,905 INFO L471 AbstractCegarLoop]: Abstraction has 1536 states and 1837 transitions. [2025-02-06 12:22:16,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:22:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 1837 transitions. [2025-02-06 12:22:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-06 12:22:16,906 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:22:16,906 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:22:16,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 12:22:17,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:17,106 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr639REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:22:17,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:22:17,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1661560813, now seen corresponding path program 1 times [2025-02-06 12:22:17,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:22:17,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942641064] [2025-02-06 12:22:17,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:22:17,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:17,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:22:17,113 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:22:17,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 12:22:17,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-06 12:22:17,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 12:22:17,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:22:17,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:22:17,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 12:22:17,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:22:17,321 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 [2025-02-06 12:22:17,331 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 [2025-02-06 12:22:17,336 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 [2025-02-06 12:22:17,362 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 [2025-02-06 12:22:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:17,374 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:22:17,374 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:22:17,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942641064] [2025-02-06 12:22:17,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942641064] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:22:17,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:22:17,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:22:17,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025076527] [2025-02-06 12:22:17,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:22:17,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:22:17,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:22:17,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:22:17,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:22:17,376 INFO L87 Difference]: Start difference. First operand 1536 states and 1837 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:22:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:22:19,626 INFO L93 Difference]: Finished difference Result 1535 states and 1835 transitions. [2025-02-06 12:22:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:22:19,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2025-02-06 12:22:19,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:22:19,630 INFO L225 Difference]: With dead ends: 1535 [2025-02-06 12:22:19,630 INFO L226 Difference]: Without dead ends: 1535 [2025-02-06 12:22:19,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:22:19,630 INFO L435 NwaCegarLoop]: 1258 mSDtfsCounter, 1 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:22:19,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3269 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-06 12:22:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2025-02-06 12:22:19,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1535. [2025-02-06 12:22:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1034 states have (on average 1.7379110251450678) internal successors, (1797), 1523 states have internal predecessors, (1797), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:22:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 1835 transitions. [2025-02-06 12:22:19,656 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 1835 transitions. Word has length 59 [2025-02-06 12:22:19,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:22:19,656 INFO L471 AbstractCegarLoop]: Abstraction has 1535 states and 1835 transitions. [2025-02-06 12:22:19,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:22:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 1835 transitions. [2025-02-06 12:22:19,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 12:22:19,657 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:22:19,657 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] [2025-02-06 12:22:19,666 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 [2025-02-06 12:22:19,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:19,859 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:22:19,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:22:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1547747535, now seen corresponding path program 1 times [2025-02-06 12:22:19,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:22:19,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364913184] [2025-02-06 12:22:19,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:22:19,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:19,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:22:19,865 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:22:19,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 12:22:19,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:22:20,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:22:20,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:22:20,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:22:20,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:22:20,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:22:20,049 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 [2025-02-06 12:22:20,102 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 [2025-02-06 12:22:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:20,112 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:22:20,112 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:22:20,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364913184] [2025-02-06 12:22:20,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364913184] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:22:20,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:22:20,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:22:20,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982711832] [2025-02-06 12:22:20,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:22:20,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:22:20,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:22:20,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:22:20,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:22:20,114 INFO L87 Difference]: Start difference. First operand 1535 states and 1835 transitions. Second operand has 7 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:22:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:22:22,524 INFO L93 Difference]: Finished difference Result 1553 states and 1865 transitions. [2025-02-06 12:22:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:22:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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 67 [2025-02-06 12:22:22,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:22:22,531 INFO L225 Difference]: With dead ends: 1553 [2025-02-06 12:22:22,534 INFO L226 Difference]: Without dead ends: 1553 [2025-02-06 12:22:22,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 12:22:22,534 INFO L435 NwaCegarLoop]: 1241 mSDtfsCounter, 12 mSDsluCounter, 3225 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4466 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:22:22,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4466 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-06 12:22:22,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2025-02-06 12:22:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1544. [2025-02-06 12:22:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1042 states have (on average 1.7351247600767754) internal successors, (1808), 1530 states have internal predecessors, (1808), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (28), 12 states have call predecessors, (28), 19 states have call successors, (28) [2025-02-06 12:22:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1855 transitions. [2025-02-06 12:22:22,552 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1855 transitions. Word has length 67 [2025-02-06 12:22:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:22:22,553 INFO L471 AbstractCegarLoop]: Abstraction has 1544 states and 1855 transitions. [2025-02-06 12:22:22,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:22:22,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1855 transitions. [2025-02-06 12:22:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 12:22:22,554 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:22:22,555 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] [2025-02-06 12:22:22,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 12:22:22,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:22,755 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr635REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:22:22,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:22:22,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1547747536, now seen corresponding path program 1 times [2025-02-06 12:22:22,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:22:22,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216894537] [2025-02-06 12:22:22,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:22:22,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:22,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:22:22,758 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:22:22,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 12:22:22,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:22:22,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:22:22,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:22:22,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:22:22,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:22:22,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:22:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:22,956 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:22:22,956 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:22:22,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216894537] [2025-02-06 12:22:22,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216894537] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:22:22,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:22:22,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:22:22,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972519989] [2025-02-06 12:22:22,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:22:22,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:22:22,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:22:22,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:22:22,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:22:22,957 INFO L87 Difference]: Start difference. First operand 1544 states and 1855 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:22:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:22:22,992 INFO L93 Difference]: Finished difference Result 1538 states and 1841 transitions. [2025-02-06 12:22:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:22:22,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 67 [2025-02-06 12:22:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:22:23,003 INFO L225 Difference]: With dead ends: 1538 [2025-02-06 12:22:23,003 INFO L226 Difference]: Without dead ends: 1538 [2025-02-06 12:22:23,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:22:23,005 INFO L435 NwaCegarLoop]: 1257 mSDtfsCounter, 0 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3763 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:22:23,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3763 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:22:23,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2025-02-06 12:22:23,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1538. [2025-02-06 12:22:23,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1036 states have (on average 1.7374517374517375) internal successors, (1800), 1526 states have internal predecessors, (1800), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-02-06 12:22:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1841 transitions. [2025-02-06 12:22:23,027 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1841 transitions. Word has length 67 [2025-02-06 12:22:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:22:23,028 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 1841 transitions. [2025-02-06 12:22:23,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:22:23,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1841 transitions. [2025-02-06 12:22:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 12:22:23,030 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:22:23,030 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:22:23,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 12:22:23,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:23,230 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:22:23,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:22:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1759994831, now seen corresponding path program 1 times [2025-02-06 12:22:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:22:23,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394657436] [2025-02-06 12:22:23,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:22:23,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:23,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:22:23,234 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:22:23,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 12:22:23,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-06 12:22:23,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 12:22:23,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:22:23,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:22:23,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:22:23,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:22:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:23,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:22:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:23,521 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:22:23,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394657436] [2025-02-06 12:22:23,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394657436] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:22:23,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:22:23,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 12:22:23,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032873394] [2025-02-06 12:22:23,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:22:23,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:22:23,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:22:23,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:22:23,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:22:23,522 INFO L87 Difference]: Start difference. First operand 1538 states and 1841 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2025-02-06 12:22:23,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:22:23,655 INFO L93 Difference]: Finished difference Result 1550 states and 1860 transitions. [2025-02-06 12:22:23,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:22:23,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 68 [2025-02-06 12:22:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:22:23,662 INFO L225 Difference]: With dead ends: 1550 [2025-02-06 12:22:23,662 INFO L226 Difference]: Without dead ends: 1550 [2025-02-06 12:22:23,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-06 12:22:23,663 INFO L435 NwaCegarLoop]: 1256 mSDtfsCounter, 8 mSDsluCounter, 6252 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7508 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:22:23,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 7508 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:22:23,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2025-02-06 12:22:23,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1548. [2025-02-06 12:22:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1045 states have (on average 1.736842105263158) internal successors, (1815), 1535 states have internal predecessors, (1815), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-02-06 12:22:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 1856 transitions. [2025-02-06 12:22:23,687 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 1856 transitions. Word has length 68 [2025-02-06 12:22:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:22:23,688 INFO L471 AbstractCegarLoop]: Abstraction has 1548 states and 1856 transitions. [2025-02-06 12:22:23,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2025-02-06 12:22:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 1856 transitions. [2025-02-06 12:22:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-06 12:22:23,689 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:22:23,689 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] [2025-02-06 12:22:23,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-06 12:22:23,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:23,890 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:22:23,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:22:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1091406159, now seen corresponding path program 2 times [2025-02-06 12:22:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:22:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614167738] [2025-02-06 12:22:23,891 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:22:23,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:23,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:22:23,893 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:22:23,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 12:22:24,028 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-02-06 12:22:39,077 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 12:22:39,078 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:22:39,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:22:39,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:22:39,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:22:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:39,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:22:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:22:39,276 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:22:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614167738] [2025-02-06 12:22:39,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614167738] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:22:39,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:22:39,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2025-02-06 12:22:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646267077] [2025-02-06 12:22:39,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:22:39,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 12:22:39,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:22:39,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 12:22:39,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-02-06 12:22:39,277 INFO L87 Difference]: Start difference. First operand 1548 states and 1856 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 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) [2025-02-06 12:22:39,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:22:39,630 INFO L93 Difference]: Finished difference Result 1563 states and 1877 transitions. [2025-02-06 12:22:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 12:22:39,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 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 71 [2025-02-06 12:22:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:22:39,633 INFO L225 Difference]: With dead ends: 1563 [2025-02-06 12:22:39,633 INFO L226 Difference]: Without dead ends: 1557 [2025-02-06 12:22:39,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=324, Unknown=0, NotChecked=0, Total=506 [2025-02-06 12:22:39,634 INFO L435 NwaCegarLoop]: 1257 mSDtfsCounter, 10 mSDsluCounter, 6264 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7521 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:22:39,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 7521 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 12:22:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2025-02-06 12:22:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1557. [2025-02-06 12:22:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1054 states have (on average 1.7324478178368121) internal successors, (1826), 1544 states have internal predecessors, (1826), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-02-06 12:22:39,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 1867 transitions. [2025-02-06 12:22:39,646 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 1867 transitions. Word has length 71 [2025-02-06 12:22:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:22:39,647 INFO L471 AbstractCegarLoop]: Abstraction has 1557 states and 1867 transitions. [2025-02-06 12:22:39,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 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) [2025-02-06 12:22:39,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 1867 transitions. [2025-02-06 12:22:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-06 12:22:39,647 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:22:39,647 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:22:39,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-06 12:22:39,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:39,848 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:22:39,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:22:39,849 INFO L85 PathProgramCache]: Analyzing trace with hash 153959951, now seen corresponding path program 3 times [2025-02-06 12:22:39,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:22:39,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046828210] [2025-02-06 12:22:39,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 12:22:39,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:22:39,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:22:39,854 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:22:39,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 12:22:39,996 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 77 statements into 6 equivalence classes.