./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:21:53,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:21:53,664 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:21:53,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:21:53,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:21:53,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:21:53,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:21:53,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:21:53,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:21:53,699 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:21:53,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:21:53,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:21:53,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:21:53,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:21:53,700 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:21:53,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:21:53,700 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:21:53,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:21:53,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:21:53,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:21:53,701 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:21:53,701 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:21:53,701 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:21:53,702 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:21:53,702 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:21:53,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:21:53,703 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:21:53,703 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:21:53,703 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:21:53,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:21:53,703 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 -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2025-02-06 10:21:53,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:21:53,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:21:53,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:21:53,964 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:21:53,964 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:21:53,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2025-02-06 10:21:55,050 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/226352900/6f63500358124de9a1e88ed257188559/FLAG4d3c7a4e7 [2025-02-06 10:21:55,395 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:21:55,396 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2025-02-06 10:21:55,415 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/226352900/6f63500358124de9a1e88ed257188559/FLAG4d3c7a4e7 [2025-02-06 10:21:55,425 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/226352900/6f63500358124de9a1e88ed257188559 [2025-02-06 10:21:55,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:21:55,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:21:55,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:21:55,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:21:55,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:21:55,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:21:55" (1/1) ... [2025-02-06 10:21:55,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e98700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:55, skipping insertion in model container [2025-02-06 10:21:55,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:21:55" (1/1) ... [2025-02-06 10:21:55,450 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:21:55,585 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:55,614 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:55,615 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 10:21:55,616 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 10:21:55,616 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 10:21:55,617 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:55,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:21:55,627 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-06 10:21:55,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f5506a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:55, skipping insertion in model container [2025-02-06 10:21:55,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:21:55,628 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 10:21:55,629 INFO L158 Benchmark]: Toolchain (without parser) took 200.79ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 91.2MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:21:55,629 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:21:55,629 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.25ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 91.2MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:21:55,630 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.25ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 91.2MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:21:57,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:21:57,512 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 10:21:57,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:21:57,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:21:57,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:21:57,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:21:57,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:21:57,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:21:57,565 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:21:57,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:21:57,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:21:57,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:21:57,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:21:57,566 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:21:57,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:21:57,566 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:21:57,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:21:57,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:21:57,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:21:57,567 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:21:57,567 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:21:57,567 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:21:57,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:21:57,567 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:21:57,567 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 10:21:57,567 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 10:21:57,567 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:21:57,567 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:21:57,567 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:21:57,568 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:21:57,568 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:21:57,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:21:57,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:21:57,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:21:57,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:21:57,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:21:57,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:21:57,569 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 10:21:57,569 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 10:21:57,569 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:21:57,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:21:57,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:21:57,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:21:57,570 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 -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2025-02-06 10:21:57,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:21:57,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:21:57,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:21:57,787 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:21:57,788 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:21:57,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2025-02-06 10:21:58,978 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fc8de6a46/50a1d40e80a0478aa4ceb726ce57d509/FLAG294ab69c4 [2025-02-06 10:21:59,271 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:21:59,271 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2025-02-06 10:21:59,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fc8de6a46/50a1d40e80a0478aa4ceb726ce57d509/FLAG294ab69c4 [2025-02-06 10:21:59,535 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fc8de6a46/50a1d40e80a0478aa4ceb726ce57d509 [2025-02-06 10:21:59,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:21:59,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:21:59,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:21:59,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:21:59,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:21:59,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:21:59,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5941010e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59, skipping insertion in model container [2025-02-06 10:21:59,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:21:59,563 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:21:59,782 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,821 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,824 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,825 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,825 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,826 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:21:59,838 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 10:21:59,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:21:59,867 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,878 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,879 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,879 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,880 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,880 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:21:59,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:21:59,885 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:21:59,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:21:59,946 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:21:59,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59 WrapperNode [2025-02-06 10:21:59,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:21:59,948 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:21:59,948 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:21:59,948 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:21:59,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:21:59,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:21:59,979 INFO L138 Inliner]: procedures = 169, calls = 88, calls flagged for inlining = 26, calls inlined = 8, statements flattened = 97 [2025-02-06 10:21:59,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:21:59,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:21:59,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:21:59,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:21:59,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:21:59,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:21:59,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:22:00,003 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-02-06 10:22:00,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:22:00,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:22:00,009 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:22:00,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:22:00,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:22:00,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:22:00,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:22:00,015 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:22:00,015 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:22:00,015 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:22:00,015 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (1/1) ... [2025-02-06 10:22:00,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:22:00,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:00,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 10:22:00,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 10:22:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-02-06 10:22:00,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-02-06 10:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_i2c_set_clientdata [2025-02-06 10:22:00,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_i2c_set_clientdata [2025-02-06 10:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 10:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 10:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 10:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 10:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 10:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 10:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 10:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 10:22:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:22:00,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:22:00,153 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:22:00,154 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:22:00,182 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L527: havoc #t~malloc12.base, #t~malloc12.offset; [2025-02-06 10:22:00,367 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L619: havoc ldv_dev_get_drvdata_#t~mem29#1.base, ldv_dev_get_drvdata_#t~mem29#1.offset; [2025-02-06 10:22:00,367 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L774: havoc ldv_i2c_get_clientdata_#t~ret42#1.base, ldv_i2c_get_clientdata_#t~ret42#1.offset; [2025-02-06 10:22:00,411 INFO L? ?]: Removed 95 outVars from TransFormulas that were not future-live. [2025-02-06 10:22:00,411 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:22:00,418 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:22:00,418 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:22:00,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:22:00 BoogieIcfgContainer [2025-02-06 10:22:00,418 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:22:00,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:22:00,421 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:22:00,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:22:00,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:21:59" (1/3) ... [2025-02-06 10:22:00,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d2dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:22:00, skipping insertion in model container [2025-02-06 10:22:00,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:59" (2/3) ... [2025-02-06 10:22:00,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d2dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:22:00, skipping insertion in model container [2025-02-06 10:22:00,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:22:00" (3/3) ... [2025-02-06 10:22:00,426 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test11_1.i [2025-02-06 10:22:00,434 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:22:00,435 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test11_1.i that has 3 procedures, 90 locations, 1 initial locations, 0 loop locations, and 30 error locations. [2025-02-06 10:22:00,460 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:22:00,476 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;@24c31bc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:22:00,479 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2025-02-06 10:22:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 10:22:00,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 10:22:00,487 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:00,487 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:00,488 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:00,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash 579701118, now seen corresponding path program 1 times [2025-02-06 10:22:00,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:00,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340028955] [2025-02-06 10:22:00,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:00,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:00,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:00,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:00,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 10:22:00,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 10:22:00,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 10:22:00,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:00,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:00,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:22:00,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:00,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:22:00,640 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:22:00,643 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:00,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340028955] [2025-02-06 10:22:00,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340028955] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:22:00,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:22:00,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:22:00,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149769577] [2025-02-06 10:22:00,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:22:00,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:22:00,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:00,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:22:00,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:00,667 INFO L87 Difference]: Start difference. First operand has 90 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:22:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:00,753 INFO L93 Difference]: Finished difference Result 159 states and 187 transitions. [2025-02-06 10:22:00,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:22:00,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-02-06 10:22:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:00,761 INFO L225 Difference]: With dead ends: 159 [2025-02-06 10:22:00,761 INFO L226 Difference]: Without dead ends: 157 [2025-02-06 10:22:00,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:00,766 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 64 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:00,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 465 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:22:00,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-02-06 10:22:00,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 92. [2025-02-06 10:22:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 82 states have internal predecessors, (88), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2025-02-06 10:22:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2025-02-06 10:22:00,804 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 11 [2025-02-06 10:22:00,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:00,804 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2025-02-06 10:22:00,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:22:00,805 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2025-02-06 10:22:00,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 10:22:00,806 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:00,806 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:00,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 10:22:01,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:01,008 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:01,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1467204799, now seen corresponding path program 1 times [2025-02-06 10:22:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:01,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198568233] [2025-02-06 10:22:01,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:01,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:01,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:01,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:01,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 10:22:01,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 10:22:01,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 10:22:01,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:01,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:01,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:22:01,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:22:01,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:22:01,094 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:01,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198568233] [2025-02-06 10:22:01,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198568233] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:22:01,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:22:01,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:22:01,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668974531] [2025-02-06 10:22:01,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:22:01,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:22:01,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:01,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:22:01,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:22:01,095 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:22:01,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:01,269 INFO L93 Difference]: Finished difference Result 163 states and 186 transitions. [2025-02-06 10:22:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:22:01,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-02-06 10:22:01,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:01,271 INFO L225 Difference]: With dead ends: 163 [2025-02-06 10:22:01,271 INFO L226 Difference]: Without dead ends: 161 [2025-02-06 10:22:01,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:22:01,272 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 70 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:01,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 309 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:22:01,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-02-06 10:22:01,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 88. [2025-02-06 10:22:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 50 states have (on average 1.68) internal successors, (84), 79 states have internal predecessors, (84), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 10:22:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2025-02-06 10:22:01,314 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 11 [2025-02-06 10:22:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:01,314 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2025-02-06 10:22:01,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:22:01,315 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2025-02-06 10:22:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 10:22:01,315 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:01,315 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:01,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 10:22:01,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:01,519 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:01,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2126816819, now seen corresponding path program 1 times [2025-02-06 10:22:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:01,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948136842] [2025-02-06 10:22:01,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:01,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:01,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:01,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:01,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 10:22:01,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:22:01,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:22:01,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:01,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:01,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:22:01,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:22:01,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:22:01,751 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:01,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948136842] [2025-02-06 10:22:01,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948136842] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:01,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:22:01,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2025-02-06 10:22:01,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180915475] [2025-02-06 10:22:01,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:01,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:22:01,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:01,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:22:01,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:01,753 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:22:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:01,826 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2025-02-06 10:22:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:22:01,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2025-02-06 10:22:01,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:01,829 INFO L225 Difference]: With dead ends: 87 [2025-02-06 10:22:01,831 INFO L226 Difference]: Without dead ends: 87 [2025-02-06 10:22:01,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:01,832 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 59 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:01,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 281 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:22:01,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-02-06 10:22:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2025-02-06 10:22:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 50 states have (on average 1.66) internal successors, (83), 78 states have internal predecessors, (83), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 10:22:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2025-02-06 10:22:01,844 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 17 [2025-02-06 10:22:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:01,845 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2025-02-06 10:22:01,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:22:01,845 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2025-02-06 10:22:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 10:22:01,846 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:01,846 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:01,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 10:22:02,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:02,046 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:02,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:02,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2126816920, now seen corresponding path program 1 times [2025-02-06 10:22:02,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:02,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112658249] [2025-02-06 10:22:02,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:02,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:02,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:02,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:02,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 10:22:02,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:22:02,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:22:02,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:02,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:02,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:22:02,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:02,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:22:02,184 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_malloc_#res.base| (select |c_#valid| |ldv_malloc_#res.base|)) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-02-06 10:22:02,216 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-02-06 10:22:02,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 10:22:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2025-02-06 10:22:02,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:22:02,414 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:02,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112658249] [2025-02-06 10:22:02,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112658249] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:02,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:22:02,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2025-02-06 10:22:02,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891513773] [2025-02-06 10:22:02,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:02,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:22:02,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:02,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:22:02,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2025-02-06 10:22:02,416 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:22:02,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:02,665 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2025-02-06 10:22:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:22:02,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2025-02-06 10:22:02,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:02,666 INFO L225 Difference]: With dead ends: 125 [2025-02-06 10:22:02,666 INFO L226 Difference]: Without dead ends: 125 [2025-02-06 10:22:02,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2025-02-06 10:22:02,668 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 71 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:02,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 217 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 231 Invalid, 0 Unknown, 140 Unchecked, 0.2s Time] [2025-02-06 10:22:02,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-02-06 10:22:02,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 98. [2025-02-06 10:22:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.6101694915254237) internal successors, (95), 87 states have internal predecessors, (95), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-06 10:22:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 114 transitions. [2025-02-06 10:22:02,678 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 114 transitions. Word has length 17 [2025-02-06 10:22:02,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:02,678 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 114 transitions. [2025-02-06 10:22:02,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:22:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 114 transitions. [2025-02-06 10:22:02,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 10:22:02,681 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:02,681 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:02,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 10:22:02,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:02,882 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:02,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2126816921, now seen corresponding path program 1 times [2025-02-06 10:22:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:02,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356364261] [2025-02-06 10:22:02,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:02,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:02,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:02,889 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:02,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 10:22:02,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:22:02,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:22:02,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:02,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:02,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:22:02,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:02,947 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 10:22:02,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:22:03,048 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-02-06 10:22:03,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:22:03,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:22:03,081 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:22:03,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 10:22:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2025-02-06 10:22:03,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:07,268 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:07,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356364261] [2025-02-06 10:22:07,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356364261] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:07,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [823209090] [2025-02-06 10:22:07,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:07,268 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 10:22:07,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 10:22:07,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 10:22:07,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2025-02-06 10:22:07,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:22:07,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:22:07,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:07,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:07,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:22:07,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:07,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:22:07,414 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 10:22:07,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:22:07,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:22:07,526 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:22:07,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 10:22:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2025-02-06 10:22:07,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:07,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [823209090] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:07,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:22:07,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2025-02-06 10:22:07,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124541309] [2025-02-06 10:22:07,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:07,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:22:07,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:07,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:22:07,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=69, Unknown=2, NotChecked=16, Total=110 [2025-02-06 10:22:07,682 INFO L87 Difference]: Start difference. First operand 98 states and 114 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:22:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:08,396 INFO L93 Difference]: Finished difference Result 216 states and 248 transitions. [2025-02-06 10:22:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:22:08,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2025-02-06 10:22:08,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:08,399 INFO L225 Difference]: With dead ends: 216 [2025-02-06 10:22:08,399 INFO L226 Difference]: Without dead ends: 216 [2025-02-06 10:22:08,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=30, Invalid=104, Unknown=2, NotChecked=20, Total=156 [2025-02-06 10:22:08,399 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 123 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:08,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 597 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 529 Invalid, 0 Unknown, 242 Unchecked, 0.6s Time] [2025-02-06 10:22:08,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-02-06 10:22:08,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 98. [2025-02-06 10:22:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.5932203389830508) internal successors, (94), 87 states have internal predecessors, (94), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-06 10:22:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2025-02-06 10:22:08,411 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 17 [2025-02-06 10:22:08,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:08,412 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2025-02-06 10:22:08,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:22:08,412 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2025-02-06 10:22:08,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 10:22:08,412 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:08,412 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:08,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:08,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:08,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:08,816 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:08,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:08,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1833413913, now seen corresponding path program 1 times [2025-02-06 10:22:08,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:08,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324317119] [2025-02-06 10:22:08,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:08,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:08,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:08,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:08,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 10:22:08,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:22:08,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:22:08,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:08,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:08,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:22:08,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:22:08,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:22:08,900 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:08,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324317119] [2025-02-06 10:22:08,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324317119] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:22:08,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:22:08,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:22:08,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83633328] [2025-02-06 10:22:08,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:22:08,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:22:08,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:08,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:22:08,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:08,901 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:22:08,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:08,923 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2025-02-06 10:22:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:22:08,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2025-02-06 10:22:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:08,924 INFO L225 Difference]: With dead ends: 92 [2025-02-06 10:22:08,924 INFO L226 Difference]: Without dead ends: 90 [2025-02-06 10:22:08,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:08,924 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:08,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 373 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:22:08,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-02-06 10:22:08,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2025-02-06 10:22:08,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 81 states have internal predecessors, (86), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-06 10:22:08,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2025-02-06 10:22:08,934 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 17 [2025-02-06 10:22:08,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:08,934 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2025-02-06 10:22:08,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:22:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2025-02-06 10:22:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:22:08,934 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:08,935 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:08,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 10:22:09,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:09,135 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:09,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:09,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1506811930, now seen corresponding path program 1 times [2025-02-06 10:22:09,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:09,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438156902] [2025-02-06 10:22:09,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:09,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:09,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:09,138 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:09,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 10:22:09,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:22:09,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:22:09,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:09,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:09,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:22:09,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:22:09,199 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:22:09,199 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:09,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438156902] [2025-02-06 10:22:09,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438156902] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:22:09,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:22:09,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:22:09,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419225359] [2025-02-06 10:22:09,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:22:09,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:22:09,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:09,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:22:09,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:09,200 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:22:09,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:09,243 INFO L93 Difference]: Finished difference Result 146 states and 170 transitions. [2025-02-06 10:22:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:22:09,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2025-02-06 10:22:09,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:09,245 INFO L225 Difference]: With dead ends: 146 [2025-02-06 10:22:09,245 INFO L226 Difference]: Without dead ends: 146 [2025-02-06 10:22:09,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:09,245 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 53 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:09,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 325 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:22:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-02-06 10:22:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 92. [2025-02-06 10:22:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 82 states have internal predecessors, (88), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-06 10:22:09,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2025-02-06 10:22:09,249 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 18 [2025-02-06 10:22:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:09,249 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2025-02-06 10:22:09,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:22:09,250 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2025-02-06 10:22:09,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:22:09,250 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:09,250 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:09,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:09,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:09,451 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:09,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1900651685, now seen corresponding path program 1 times [2025-02-06 10:22:09,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:09,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391910221] [2025-02-06 10:22:09,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:09,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:09,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:09,454 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:09,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 10:22:09,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:22:09,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:22:09,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:09,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:09,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:22:09,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:22:09,567 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:22:09,608 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391910221] [2025-02-06 10:22:09,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391910221] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:09,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:22:09,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2025-02-06 10:22:09,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267319127] [2025-02-06 10:22:09,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:09,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:22:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:09,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:22:09,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:22:09,609 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:22:09,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:09,744 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2025-02-06 10:22:09,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:22:09,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2025-02-06 10:22:09,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:09,745 INFO L225 Difference]: With dead ends: 91 [2025-02-06 10:22:09,745 INFO L226 Difference]: Without dead ends: 91 [2025-02-06 10:22:09,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:22:09,746 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 71 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:09,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 200 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:22:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-02-06 10:22:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2025-02-06 10:22:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 81 states have internal predecessors, (86), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-06 10:22:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2025-02-06 10:22:09,752 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 18 [2025-02-06 10:22:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:09,752 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2025-02-06 10:22:09,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:22:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2025-02-06 10:22:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:22:09,752 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:09,752 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:09,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 10:22:09,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:09,953 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:09,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:09,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1760505586, now seen corresponding path program 1 times [2025-02-06 10:22:09,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:09,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741716773] [2025-02-06 10:22:09,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:09,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:09,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:09,957 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:09,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 10:22:09,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:22:10,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:22:10,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:10,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:10,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 10:22:10,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:10,117 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_19| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_19| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_19|)))) is different from true [2025-02-06 10:22:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:22:10,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:10,179 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2025-02-06 10:22:10,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2025-02-06 10:22:10,292 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:10,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741716773] [2025-02-06 10:22:10,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741716773] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:10,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1613050977] [2025-02-06 10:22:10,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:10,292 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 10:22:10,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 10:22:10,297 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 10:22:10,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2025-02-06 10:22:10,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:22:10,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:22:10,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:10,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:10,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 10:22:10,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:10,540 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_22| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_22|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_22| (_ bv0 1))))) (= (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)) (_ bv0 1))) is different from true [2025-02-06 10:22:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:22:10,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:10,626 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2025-02-06 10:22:10,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2025-02-06 10:22:10,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1613050977] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:10,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:22:10,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2025-02-06 10:22:10,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815616843] [2025-02-06 10:22:10,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:10,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:22:10,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:10,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:22:10,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=107, Unknown=2, NotChecked=42, Total=182 [2025-02-06 10:22:10,796 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand has 13 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:22:11,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:11,527 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2025-02-06 10:22:11,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:22:11,528 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2025-02-06 10:22:11,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:11,530 INFO L225 Difference]: With dead ends: 151 [2025-02-06 10:22:11,530 INFO L226 Difference]: Without dead ends: 146 [2025-02-06 10:22:11,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=222, Unknown=2, NotChecked=62, Total=342 [2025-02-06 10:22:11,532 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 139 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 334 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:11,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 600 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 568 Invalid, 0 Unknown, 334 Unchecked, 0.6s Time] [2025-02-06 10:22:11,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-02-06 10:22:11,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 86. [2025-02-06 10:22:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 77 states have internal predecessors, (80), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-06 10:22:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2025-02-06 10:22:11,535 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 21 [2025-02-06 10:22:11,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:11,535 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2025-02-06 10:22:11,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:22:11,535 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2025-02-06 10:22:11,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-06 10:22:11,539 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:11,539 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:11,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:11,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 10:22:11,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:11,940 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:11,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:11,940 INFO L85 PathProgramCache]: Analyzing trace with hash -91054005, now seen corresponding path program 1 times [2025-02-06 10:22:11,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:11,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64220286] [2025-02-06 10:22:11,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:11,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:11,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:11,942 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:11,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 10:22:11,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 10:22:11,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 10:22:11,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:11,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:11,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:22:11,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:12,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:22:12,075 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-02-06 10:22:12,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 10:22:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:22:12,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:22:19,183 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:19,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64220286] [2025-02-06 10:22:19,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64220286] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:19,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:22:19,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2025-02-06 10:22:19,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167013239] [2025-02-06 10:22:19,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:19,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:22:19,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:19,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:22:19,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:22:19,185 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:22:19,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:19,439 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2025-02-06 10:22:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:22:19,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2025-02-06 10:22:19,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:19,441 INFO L225 Difference]: With dead ends: 118 [2025-02-06 10:22:19,441 INFO L226 Difference]: Without dead ends: 118 [2025-02-06 10:22:19,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:22:19,441 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 61 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:19,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 224 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:22:19,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-02-06 10:22:19,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 96. [2025-02-06 10:22:19,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 60 states have (on average 1.55) internal successors, (93), 85 states have internal predecessors, (93), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2025-02-06 10:22:19,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2025-02-06 10:22:19,445 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 25 [2025-02-06 10:22:19,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:19,445 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2025-02-06 10:22:19,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:22:19,445 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2025-02-06 10:22:19,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-06 10:22:19,445 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:19,446 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:19,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 10:22:19,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:19,650 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:19,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:19,650 INFO L85 PathProgramCache]: Analyzing trace with hash -91054004, now seen corresponding path program 1 times [2025-02-06 10:22:19,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:19,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58930307] [2025-02-06 10:22:19,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:19,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:19,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:19,653 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:19,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 10:22:19,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 10:22:19,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 10:22:19,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:19,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:19,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:22:19,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:19,723 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 10:22:19,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:22:19,818 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-02-06 10:22:19,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:22:19,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:22:19,838 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:22:19,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 10:22:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2025-02-06 10:22:19,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:19,969 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:19,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58930307] [2025-02-06 10:22:19,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58930307] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:19,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [368107380] [2025-02-06 10:22:19,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:19,969 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 10:22:19,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 10:22:19,971 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 10:22:19,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2025-02-06 10:22:20,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 10:22:20,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 10:22:20,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:20,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:20,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:22:20,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:20,124 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 10:22:20,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:22:20,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:22:20,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:22:20,234 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:22:20,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 10:22:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2025-02-06 10:22:20,245 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:20,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [368107380] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:20,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:22:20,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2025-02-06 10:22:20,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943404082] [2025-02-06 10:22:20,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:20,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:22:20,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:20,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:22:20,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2025-02-06 10:22:20,389 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:22:21,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:21,101 INFO L93 Difference]: Finished difference Result 181 states and 205 transitions. [2025-02-06 10:22:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:22:21,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2025-02-06 10:22:21,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:21,102 INFO L225 Difference]: With dead ends: 181 [2025-02-06 10:22:21,102 INFO L226 Difference]: Without dead ends: 181 [2025-02-06 10:22:21,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=105, Unknown=1, NotChecked=20, Total=156 [2025-02-06 10:22:21,103 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 91 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:21,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 551 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 428 Invalid, 0 Unknown, 199 Unchecked, 0.6s Time] [2025-02-06 10:22:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-02-06 10:22:21,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 125. [2025-02-06 10:22:21,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 86 states have (on average 1.5813953488372092) internal successors, (136), 111 states have internal predecessors, (136), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) [2025-02-06 10:22:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2025-02-06 10:22:21,108 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 25 [2025-02-06 10:22:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:21,108 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2025-02-06 10:22:21,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:22:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2025-02-06 10:22:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-06 10:22:21,109 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:21,109 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:21,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2025-02-06 10:22:21,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 10:22:21,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:21,513 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:21,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:21,513 INFO L85 PathProgramCache]: Analyzing trace with hash -596612630, now seen corresponding path program 1 times [2025-02-06 10:22:21,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:21,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011173455] [2025-02-06 10:22:21,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:21,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:21,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:21,518 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:21,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 10:22:21,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 10:22:21,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 10:22:21,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:21,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:21,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:22:21,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:22:21,626 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:22:21,626 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:21,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011173455] [2025-02-06 10:22:21,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011173455] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:22:21,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:22:21,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:22:21,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679101886] [2025-02-06 10:22:21,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:22:21,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:22:21,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:21,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:22:21,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:21,627 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:22:21,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:21,672 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2025-02-06 10:22:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:22:21,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2025-02-06 10:22:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:21,677 INFO L225 Difference]: With dead ends: 88 [2025-02-06 10:22:21,677 INFO L226 Difference]: Without dead ends: 86 [2025-02-06 10:22:21,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:21,678 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:21,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:22:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-02-06 10:22:21,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2025-02-06 10:22:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 54 states have (on average 1.5) internal successors, (81), 77 states have internal predecessors, (81), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 10:22:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2025-02-06 10:22:21,680 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 25 [2025-02-06 10:22:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:21,680 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2025-02-06 10:22:21,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:22:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2025-02-06 10:22:21,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-06 10:22:21,680 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:21,680 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:21,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:21,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:21,886 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:21,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:21,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1472290431, now seen corresponding path program 1 times [2025-02-06 10:22:21,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:21,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578613745] [2025-02-06 10:22:21,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:21,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:21,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:21,890 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:21,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 10:22:21,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 10:22:21,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 10:22:21,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:21,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:21,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:22:21,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 10:22:21,957 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:22:21,958 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:21,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578613745] [2025-02-06 10:22:21,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578613745] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:22:21,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:22:21,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:22:21,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963854127] [2025-02-06 10:22:21,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:22:21,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:22:21,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:21,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:22:21,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:21,960 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:22:21,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:21,991 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2025-02-06 10:22:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:22:21,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2025-02-06 10:22:21,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:21,993 INFO L225 Difference]: With dead ends: 132 [2025-02-06 10:22:21,993 INFO L226 Difference]: Without dead ends: 132 [2025-02-06 10:22:21,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:22:21,993 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 43 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:21,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 317 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:22:21,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-02-06 10:22:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 88. [2025-02-06 10:22:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 78 states have internal predecessors, (83), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 10:22:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2025-02-06 10:22:21,996 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 26 [2025-02-06 10:22:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:21,996 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2025-02-06 10:22:21,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:22:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2025-02-06 10:22:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-06 10:22:21,997 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:21,997 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:22,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 10:22:22,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:22,198 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:22,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1935173184, now seen corresponding path program 1 times [2025-02-06 10:22:22,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:22,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800565654] [2025-02-06 10:22:22,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:22,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:22,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:22,201 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:22,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 10:22:22,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 10:22:22,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 10:22:22,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:22,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:22,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:22:22,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:22:22,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 10:22:22,437 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:22,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800565654] [2025-02-06 10:22:22,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800565654] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:22,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:22:22,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2025-02-06 10:22:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518458922] [2025-02-06 10:22:22,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:22,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:22:22,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:22,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:22:22,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:22:22,438 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 10:22:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:22,601 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2025-02-06 10:22:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:22:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 26 [2025-02-06 10:22:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:22,602 INFO L225 Difference]: With dead ends: 91 [2025-02-06 10:22:22,602 INFO L226 Difference]: Without dead ends: 89 [2025-02-06 10:22:22,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:22:22,602 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 160 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:22,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 275 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:22:22,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-02-06 10:22:22,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2025-02-06 10:22:22,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 78 states have internal predecessors, (83), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 10:22:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2025-02-06 10:22:22,605 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 26 [2025-02-06 10:22:22,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:22,605 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2025-02-06 10:22:22,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 10:22:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2025-02-06 10:22:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-06 10:22:22,606 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:22,606 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:22,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 10:22:22,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:22,807 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:22,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1603551480, now seen corresponding path program 1 times [2025-02-06 10:22:22,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:22,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078398772] [2025-02-06 10:22:22,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:22,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:22,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:22,811 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:22,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 10:22:22,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 10:22:22,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 10:22:22,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:22,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:22,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 10:22:22,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:22,899 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_malloc_#res.base| (select |c_#valid| |ldv_malloc_#res.base|)) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-02-06 10:22:22,921 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-02-06 10:22:22,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 10:22:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 10:22:22,944 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:22:22,944 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:22,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078398772] [2025-02-06 10:22:22,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078398772] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:22:22,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:22:22,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:22:22,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991982919] [2025-02-06 10:22:22,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:22:22,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:22:22,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:22,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:22:22,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2025-02-06 10:22:22,945 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:22:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:23,097 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2025-02-06 10:22:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:22:23,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2025-02-06 10:22:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:23,098 INFO L225 Difference]: With dead ends: 123 [2025-02-06 10:22:23,098 INFO L226 Difference]: Without dead ends: 123 [2025-02-06 10:22:23,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2025-02-06 10:22:23,098 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 69 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:23,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 244 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 145 Unchecked, 0.1s Time] [2025-02-06 10:22:23,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-02-06 10:22:23,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 88. [2025-02-06 10:22:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 77 states have internal predecessors, (82), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 10:22:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2025-02-06 10:22:23,102 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 27 [2025-02-06 10:22:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:23,102 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2025-02-06 10:22:23,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:22:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2025-02-06 10:22:23,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-06 10:22:23,105 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:23,105 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:23,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 10:22:23,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:23,310 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:23,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:23,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1603551479, now seen corresponding path program 1 times [2025-02-06 10:22:23,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:23,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486699598] [2025-02-06 10:22:23,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:23,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:23,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:23,313 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:23,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 10:22:23,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 10:22:23,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 10:22:23,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:23,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:23,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:22:23,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:23,438 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-02-06 10:22:23,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:22:23,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:22:23,464 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:22:23,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 10:22:23,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2025-02-06 10:22:23,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:23,765 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:23,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486699598] [2025-02-06 10:22:23,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486699598] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:23,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1851469891] [2025-02-06 10:22:23,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:23,766 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 10:22:23,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 10:22:23,769 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 10:22:23,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2025-02-06 10:22:23,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 10:22:23,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 10:22:23,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:23,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:23,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-06 10:22:23,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:23,913 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 10:22:23,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:22:24,077 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:22:24,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2025-02-06 10:22:24,091 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:22:24,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 10:22:24,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:22:24,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:22:24,194 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:22:24,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 10:22:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2025-02-06 10:22:24,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:25,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1851469891] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:25,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:22:25,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2025-02-06 10:22:25,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604190759] [2025-02-06 10:22:25,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:25,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 10:22:25,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:25,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 10:22:25,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=320, Unknown=1, NotChecked=36, Total=420 [2025-02-06 10:22:25,357 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-06 10:22:26,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:26,140 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2025-02-06 10:22:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:22:26,141 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 27 [2025-02-06 10:22:26,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:26,142 INFO L225 Difference]: With dead ends: 186 [2025-02-06 10:22:26,142 INFO L226 Difference]: Without dead ends: 186 [2025-02-06 10:22:26,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=120, Invalid=585, Unknown=1, NotChecked=50, Total=756 [2025-02-06 10:22:26,142 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 260 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:26,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1004 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 770 Invalid, 0 Unknown, 203 Unchecked, 0.6s Time] [2025-02-06 10:22:26,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-02-06 10:22:26,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 87. [2025-02-06 10:22:26,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.396551724137931) internal successors, (81), 76 states have internal predecessors, (81), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 10:22:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2025-02-06 10:22:26,147 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 27 [2025-02-06 10:22:26,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:26,148 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2025-02-06 10:22:26,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-06 10:22:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2025-02-06 10:22:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-06 10:22:26,149 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:26,149 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:26,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:26,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2025-02-06 10:22:26,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-06 10:22:26,550 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:26,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:26,550 INFO L85 PathProgramCache]: Analyzing trace with hash 880288261, now seen corresponding path program 1 times [2025-02-06 10:22:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:26,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020692127] [2025-02-06 10:22:26,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:26,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:26,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:26,552 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:26,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 10:22:26,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 10:22:26,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 10:22:26,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:26,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:26,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 10:22:26,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:26,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:22:26,688 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:22:26,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 10:22:26,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 10:22:30,735 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_9| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_16| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_16| (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_16|) |v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_9|)))) is different from true [2025-02-06 10:22:30,787 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-06 10:22:30,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2025-02-06 10:22:30,830 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 27 treesize of output 15 [2025-02-06 10:22:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2025-02-06 10:22:30,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:30,915 INFO L349 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2025-02-06 10:22:30,915 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 23 treesize of output 22 [2025-02-06 10:22:31,965 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:31,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020692127] [2025-02-06 10:22:31,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020692127] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:31,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [649477184] [2025-02-06 10:22:31,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:31,965 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 10:22:31,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 10:22:31,968 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 10:22:31,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2025-02-06 10:22:32,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 10:22:32,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 10:22:32,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:32,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:32,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 10:22:32,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:32,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:22:32,247 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:22:32,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 10:22:32,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 10:22:36,378 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18|) (_ bv0 32)) |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18|))) is different from true [2025-02-06 10:22:36,482 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-06 10:22:36,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2025-02-06 10:22:36,582 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 27 treesize of output 15 [2025-02-06 10:22:36,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2025-02-06 10:22:36,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:36,608 INFO L349 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2025-02-06 10:22:36,608 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 23 treesize of output 22 [2025-02-06 10:22:36,612 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_257 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_257) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) is different from false [2025-02-06 10:22:36,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [649477184] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:36,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:22:36,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2025-02-06 10:22:36,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759572435] [2025-02-06 10:22:36,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:36,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 10:22:36,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:36,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 10:22:36,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=528, Unknown=14, NotChecked=144, Total=756 [2025-02-06 10:22:36,624 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 20 states have internal predecessors, (38), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 10:22:46,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:46,186 INFO L93 Difference]: Finished difference Result 142 states and 158 transitions. [2025-02-06 10:22:46,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 10:22:46,187 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 20 states have internal predecessors, (38), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2025-02-06 10:22:46,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:46,188 INFO L225 Difference]: With dead ends: 142 [2025-02-06 10:22:46,188 INFO L226 Difference]: Without dead ends: 142 [2025-02-06 10:22:46,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=237, Invalid=1164, Unknown=17, NotChecked=222, Total=1640 [2025-02-06 10:22:46,188 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 178 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:46,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1105 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1081 Invalid, 0 Unknown, 304 Unchecked, 1.1s Time] [2025-02-06 10:22:46,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-02-06 10:22:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 93. [2025-02-06 10:22:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.359375) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 10:22:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2025-02-06 10:22:46,195 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 29 [2025-02-06 10:22:46,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:46,196 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2025-02-06 10:22:46,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 20 states have internal predecessors, (38), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 10:22:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2025-02-06 10:22:46,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-06 10:22:46,196 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:46,196 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:22:46,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:46,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2025-02-06 10:22:46,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-06 10:22:46,599 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:22:46,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash 880288262, now seen corresponding path program 1 times [2025-02-06 10:22:46,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:22:46,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716131029] [2025-02-06 10:22:46,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:46,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:46,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:46,603 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:46,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-06 10:22:46,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 10:22:46,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 10:22:46,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:46,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:46,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 10:22:46,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:46,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:22:46,760 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:22:46,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 10:22:46,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 10:22:46,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 10:22:46,974 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-06 10:22:46,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2025-02-06 10:22:46,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 11 [2025-02-06 10:22:47,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-02-06 10:22:47,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-02-06 10:22:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:22:47,096 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:47,368 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:22:47,369 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 50 treesize of output 54 [2025-02-06 10:22:47,417 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_9 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_prenex_9) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset|))) (forall ((v_ArrVal_280 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_280) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (or (forall ((v_prenex_9 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_prenex_9) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))) (forall ((v_ArrVal_281 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_281) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))))) is different from false [2025-02-06 10:22:47,476 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:22:47,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716131029] [2025-02-06 10:22:47,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716131029] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:47,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1683341473] [2025-02-06 10:22:47,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:22:47,477 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 10:22:47,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 10:22:47,478 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 10:22:47,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2025-02-06 10:22:47,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 10:22:47,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 10:22:47,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:47,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:47,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-06 10:22:47,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:47,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 10:22:47,774 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 10:22:51,859 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-02-06 10:22:51,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-02-06 10:22:51,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 10:22:52,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 10:22:52,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 10:22:52,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-06 10:22:52,165 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22| (_ BitVec 32))) (and (not (= |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22| (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22|) (_ bv0 32)))) (= (_ bv0 32) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22|) (_ bv0 32)))))) is different from true [2025-02-06 10:22:52,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:22:52,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:22:52,219 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2025-02-06 10:22:52,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2025-02-06 10:22:52,384 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2025-02-06 10:22:52,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 60 [2025-02-06 10:22:52,411 INFO L349 Elim1Store]: treesize reduction 29, result has 31.0 percent of original size [2025-02-06 10:22:52,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 29 [2025-02-06 10:22:52,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2025-02-06 10:22:52,564 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 25 treesize of output 13 [2025-02-06 10:22:52,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-02-06 10:22:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2025-02-06 10:22:52,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:52,989 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ldv_malloc_#res.base_95| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_95|))) (forall ((v_ArrVal_307 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_308 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_311 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_308) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (select (store |c_#length| |v_ldv_malloc_#res.base_95| v_ArrVal_311) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_307) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))))) (or (forall ((v_ArrVal_308 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_308) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|v_ldv_malloc_#res.base_95| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_95|)))))) is different from false [2025-02-06 10:22:52,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1683341473] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:52,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:22:52,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2025-02-06 10:22:52,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047694829] [2025-02-06 10:22:52,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:52,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-06 10:22:52,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:22:52,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-06 10:22:52,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=997, Unknown=20, NotChecked=198, Total=1332 [2025-02-06 10:22:52,996 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 10:22:57,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:23:01,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:23:05,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:23:10,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:23:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:23:10,646 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2025-02-06 10:23:10,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 10:23:10,647 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2025-02-06 10:23:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:23:10,647 INFO L225 Difference]: With dead ends: 132 [2025-02-06 10:23:10,647 INFO L226 Difference]: Without dead ends: 130 [2025-02-06 10:23:10,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=229, Invalid=1484, Unknown=21, NotChecked=246, Total=1980 [2025-02-06 10:23:10,649 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 199 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 26 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:23:10,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 751 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1020 Invalid, 4 Unknown, 131 Unchecked, 17.2s Time] [2025-02-06 10:23:10,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-02-06 10:23:10,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 94. [2025-02-06 10:23:10,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 82 states have internal predecessors, (87), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 10:23:10,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2025-02-06 10:23:10,652 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 29 [2025-02-06 10:23:10,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:23:10,653 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2025-02-06 10:23:10,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 10:23:10,653 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2025-02-06 10:23:10,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-06 10:23:10,653 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:23:10,653 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-02-06 10:23:10,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-06 10:23:10,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2025-02-06 10:23:11,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-06 10:23:11,057 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 27 more)] === [2025-02-06 10:23:11,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:23:11,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1592529946, now seen corresponding path program 1 times [2025-02-06 10:23:11,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:23:11,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053118019] [2025-02-06 10:23:11,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:23:11,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:23:11,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:23:11,062 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:23:11,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-06 10:23:11,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 10:23:11,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 10:23:11,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:23:11,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:23:11,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 10:23:11,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:23:16,428 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_25| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_25| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_25|)))) is different from true [2025-02-06 10:23:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 10:23:16,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:23:16,540 INFO L349 Elim1Store]: treesize reduction 86, result has 8.5 percent of original size [2025-02-06 10:23:16,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 80 [2025-02-06 10:23:24,742 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:23:24,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053118019] [2025-02-06 10:23:24,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053118019] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:23:24,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1420873418] [2025-02-06 10:23:24,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:23:24,743 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 10:23:24,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 10:23:24,745 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 10:23:24,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2025-02-06 10:23:24,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 10:23:24,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 10:23:24,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:23:24,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:23:24,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:23:24,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:23:37,529 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_27| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~cfg~1#1.base_29| (_ BitVec 32))) (and (not (= (_ bv0 32) |v_ULTIMATE.start_entry_point_~c11~0#1.base_27|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~cfg~1#1.base_29| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~c11~0#1.base_27| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~cfg~1#1.base_29|)) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_27| (_ bv1 1)) |v_ULTIMATE.start_entry_point_~cfg~1#1.base_29| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~c11~0#1.base_27|))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_27|)))) (= (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)) (_ bv0 1))) is different from true [2025-02-06 10:23:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 10:23:37,548 INFO L312 TraceCheckSpWp]: Computing backward predicates...