./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 d789cb2558e3de4d1d16c03a2a21714577a96d35a26f84712733ec2a50aa0d89 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 22:54:49,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 22:54:49,719 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-08 22:54:49,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 22:54:49,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 22:54:49,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 22:54:49,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 22:54:49,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 22:54:49,745 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 22:54:49,745 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 22:54:49,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 22:54:49,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 22:54:49,745 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 22:54:49,745 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 22:54:49,745 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 22:54:49,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 22:54:49,746 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 22:54:49,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 22:54:49,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 22:54:49,746 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 22:54:49,746 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-08 22:54:49,746 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-08 22:54:49,746 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-08 22:54:49,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 22:54:49,746 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 22:54:49,746 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 22:54:49,746 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 22:54:49,747 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 22:54:49,747 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 22:54:49,747 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 22:54:49,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 22:54:49,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 22:54:49,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 22:54:49,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:54:49,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 22:54:49,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 22:54:49,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 22:54:49,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 22:54:49,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 22:54:49,748 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 22:54:49,748 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 22:54:49,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 22:54:49,748 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/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 -> d789cb2558e3de4d1d16c03a2a21714577a96d35a26f84712733ec2a50aa0d89 [2025-03-08 22:54:49,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 22:54:49,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 22:54:49,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 22:54:49,964 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 22:54:49,964 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 22:54:49,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2025-03-08 22:54:51,122 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7df977c8/5740fef7a3234c3ba1bd25ed89ca6aa3/FLAG850b30cd5 [2025-03-08 22:54:51,412 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 22:54:51,413 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2025-03-08 22:54:51,428 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7df977c8/5740fef7a3234c3ba1bd25ed89ca6aa3/FLAG850b30cd5 [2025-03-08 22:54:51,682 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7df977c8/5740fef7a3234c3ba1bd25ed89ca6aa3 [2025-03-08 22:54:51,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 22:54:51,685 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 22:54:51,686 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 22:54:51,686 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 22:54:51,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 22:54:51,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:54:51" (1/1) ... [2025-03-08 22:54:51,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c453938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:51, skipping insertion in model container [2025-03-08 22:54:51,691 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:54:51" (1/1) ... [2025-03-08 22:54:51,719 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 22:54:51,901 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-08 22:54:51,931 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-08 22:54:51,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:54:51,947 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) [2025-03-08 22:54:51,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@38197243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:51, skipping insertion in model container [2025-03-08 22:54:51,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 22:54:51,948 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-08 22:54:51,949 INFO L158 Benchmark]: Toolchain (without parser) took 263.74ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 96.1MB in the end (delta: 14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 22:54:51,949 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 22:54:51,949 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.44ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 96.1MB in the end (delta: 14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 22:54:51,953 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.44ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 96.1MB in the end (delta: 14.0MB). Peak memory consumption was 8.4MB. 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/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 d789cb2558e3de4d1d16c03a2a21714577a96d35a26f84712733ec2a50aa0d89 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 22:54:53,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 22:54:53,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-08 22:54:53,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 22:54:53,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 22:54:53,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 22:54:53,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 22:54:53,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 22:54:53,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 22:54:53,697 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 22:54:53,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 22:54:53,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 22:54:53,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 22:54:53,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 22:54:53,698 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 22:54:53,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 22:54:53,699 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 22:54:53,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 22:54:53,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 22:54:53,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 22:54:53,699 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-08 22:54:53,699 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-08 22:54:53,699 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-08 22:54:53,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 22:54:53,699 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 22:54:53,699 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-08 22:54:53,700 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-08 22:54:53,700 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 22:54:53,700 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 22:54:53,700 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 22:54:53,700 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 22:54:53,700 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 22:54:53,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 22:54:53,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 22:54:53,701 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 22:54:53,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:54:53,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 22:54:53,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 22:54:53,701 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-08 22:54:53,701 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-08 22:54:53,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 22:54:53,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 22:54:53,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 22:54:53,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 22:54:53,701 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/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 -> d789cb2558e3de4d1d16c03a2a21714577a96d35a26f84712733ec2a50aa0d89 [2025-03-08 22:54:53,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 22:54:53,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 22:54:53,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 22:54:53,953 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 22:54:53,954 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 22:54:53,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2025-03-08 22:54:55,110 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63f7b0852/f4a9ed59690149d2bdf7e0817ed813be/FLAGced1dc05e [2025-03-08 22:54:55,357 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 22:54:55,357 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2025-03-08 22:54:55,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63f7b0852/f4a9ed59690149d2bdf7e0817ed813be/FLAGced1dc05e [2025-03-08 22:54:55,675 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63f7b0852/f4a9ed59690149d2bdf7e0817ed813be [2025-03-08 22:54:55,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 22:54:55,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 22:54:55,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 22:54:55,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 22:54:55,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 22:54:55,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:54:55" (1/1) ... [2025-03-08 22:54:55,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc55064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:55, skipping insertion in model container [2025-03-08 22:54:55,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:54:55" (1/1) ... [2025-03-08 22:54:55,702 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 22:54:55,921 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-08 22:54:55,971 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-08 22:54:55,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:54:55,998 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-08 22:54:56,009 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 22:54:56,037 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-08 22:54:56,048 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-08 22:54:56,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:54:56,060 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 22:54:56,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:54:56,151 INFO L204 MainTranslator]: Completed translation [2025-03-08 22:54:56,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56 WrapperNode [2025-03-08 22:54:56,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 22:54:56,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 22:54:56,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 22:54:56,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 22:54:56,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,173 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,192 INFO L138 Inliner]: procedures = 168, calls = 79, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 60 [2025-03-08 22:54:56,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 22:54:56,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 22:54:56,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 22:54:56,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 22:54:56,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,229 INFO L175 MemorySlicer]: Split 16 memory accesses to 2 slices as follows [2, 14]. 88 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 6 writes are split as follows [0, 6]. [2025-03-08 22:54:56,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,240 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 22:54:56,246 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 22:54:56,246 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 22:54:56,246 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 22:54:56,247 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (1/1) ... [2025-03-08 22:54:56,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:54:56,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:54:56,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 22:54:56,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 22:54:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2025-03-08 22:54:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2025-03-08 22:54:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-03-08 22:54:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-03-08 22:54:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2025-03-08 22:54:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2025-03-08 22:54:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 22:54:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 22:54:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 22:54:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 22:54:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 22:54:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 22:54:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 22:54:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 22:54:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 22:54:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 22:54:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2025-03-08 22:54:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2025-03-08 22:54:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 22:54:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 22:54:56,388 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 22:54:56,390 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 22:54:56,567 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L527: havoc #t~malloc12.base, #t~malloc12.offset; [2025-03-08 22:54:56,670 INFO L? ?]: Removed 74 outVars from TransFormulas that were not future-live. [2025-03-08 22:54:56,671 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 22:54:56,681 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 22:54:56,681 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 22:54:56,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:54:56 BoogieIcfgContainer [2025-03-08 22:54:56,682 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 22:54:56,683 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 22:54:56,683 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 22:54:56,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 22:54:56,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 10:54:55" (1/3) ... [2025-03-08 22:54:56,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e272a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:54:56, skipping insertion in model container [2025-03-08 22:54:56,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:54:56" (2/3) ... [2025-03-08 22:54:56,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e272a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:54:56, skipping insertion in model container [2025-03-08 22:54:56,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:54:56" (3/3) ... [2025-03-08 22:54:56,688 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test14_2.i [2025-03-08 22:54:56,698 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 22:54:56,699 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test14_2.i that has 5 procedures, 72 locations, 1 initial locations, 1 loop locations, and 25 error locations. [2025-03-08 22:54:56,730 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 22:54:56,738 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;@3e39eb68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 22:54:56,739 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-03-08 22:54:56,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 38 states have (on average 1.736842105263158) internal successors, (66), 64 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-08 22:54:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 22:54:56,747 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:54:56,747 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:54:56,748 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2025-03-08 22:54:56,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:54:56,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1609377029, now seen corresponding path program 1 times [2025-03-08 22:54:56,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 22:54:56,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645817821] [2025-03-08 22:54:56,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:54:56,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:54:56,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:54:56,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:54:56,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 22:54:56,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 22:54:56,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 22:54:56,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:54:56,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:54:56,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 22:54:56,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:54:56,903 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 [2025-03-08 22:54:56,952 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 [2025-03-08 22:54:56,995 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-08 22:54:56,996 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 [2025-03-08 22:54:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:54:57,035 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:54:57,036 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 22:54:57,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645817821] [2025-03-08 22:54:57,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645817821] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:54:57,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:54:57,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 22:54:57,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500192964] [2025-03-08 22:54:57,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:54:57,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 22:54:57,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 22:54:57,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 22:54:57,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2025-03-08 22:54:57,058 INFO L87 Difference]: Start difference. First operand has 72 states, 38 states have (on average 1.736842105263158) internal successors, (66), 64 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 22:54:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:54:57,299 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2025-03-08 22:54:57,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:54:57,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-03-08 22:54:57,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:54:57,305 INFO L225 Difference]: With dead ends: 73 [2025-03-08 22:54:57,305 INFO L226 Difference]: Without dead ends: 71 [2025-03-08 22:54:57,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2025-03-08 22:54:57,308 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 46 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:54:57,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 102 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 203 Invalid, 0 Unknown, 81 Unchecked, 0.2s Time] [2025-03-08 22:54:57,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-03-08 22:54:57,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2025-03-08 22:54:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-08 22:54:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2025-03-08 22:54:57,342 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 12 [2025-03-08 22:54:57,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:54:57,343 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2025-03-08 22:54:57,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 22:54:57,343 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2025-03-08 22:54:57,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 22:54:57,343 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:54:57,343 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:54:57,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 22:54:57,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:54:57,544 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2025-03-08 22:54:57,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:54:57,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1609377028, now seen corresponding path program 1 times [2025-03-08 22:54:57,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 22:54:57,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900787897] [2025-03-08 22:54:57,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:54:57,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:54:57,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:54:57,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:54:57,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 22:54:57,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 22:54:57,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 22:54:57,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:54:57,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:54:57,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 22:54:57,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:54:57,627 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 [2025-03-08 22:54:57,633 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 [2025-03-08 22:54:57,670 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 [2025-03-08 22:54:57,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 22:54:57,708 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 [2025-03-08 22:54:57,723 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-08 22:54:57,723 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 [2025-03-08 22:54:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:54:57,779 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:54:57,779 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 22:54:57,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900787897] [2025-03-08 22:54:57,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900787897] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:54:57,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:54:57,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 22:54:57,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69565726] [2025-03-08 22:54:57,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:54:57,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 22:54:57,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 22:54:57,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 22:54:57,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2025-03-08 22:54:57,780 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 22:54:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:54:58,092 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2025-03-08 22:54:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 22:54:58,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-03-08 22:54:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:54:58,093 INFO L225 Difference]: With dead ends: 74 [2025-03-08 22:54:58,094 INFO L226 Difference]: Without dead ends: 74 [2025-03-08 22:54:58,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2025-03-08 22:54:58,094 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 47 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 22:54:58,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 130 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 252 Invalid, 0 Unknown, 86 Unchecked, 0.3s Time] [2025-03-08 22:54:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-03-08 22:54:58,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2025-03-08 22:54:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 60 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-08 22:54:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2025-03-08 22:54:58,104 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 12 [2025-03-08 22:54:58,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:54:58,105 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2025-03-08 22:54:58,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 22:54:58,105 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2025-03-08 22:54:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-08 22:54:58,105 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:54:58,105 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:54:58,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 22:54:58,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:54:58,306 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2025-03-08 22:54:58,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:54:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash 86632557, now seen corresponding path program 1 times [2025-03-08 22:54:58,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 22:54:58,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252105291] [2025-03-08 22:54:58,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:54:58,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:54:58,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:54:58,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:54:58,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 22:54:58,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-08 22:54:58,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 22:54:58,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:54:58,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:54:58,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 22:54:58,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:54:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:54:58,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:54:58,392 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 22:54:58,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252105291] [2025-03-08 22:54:58,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252105291] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:54:58,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:54:58,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 22:54:58,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143478936] [2025-03-08 22:54:58,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:54:58,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:54:58,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 22:54:58,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:54:58,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:54:58,393 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. 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) [2025-03-08 22:54:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:54:58,415 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2025-03-08 22:54:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:54:58,416 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 [2025-03-08 22:54:58,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:54:58,417 INFO L225 Difference]: With dead ends: 74 [2025-03-08 22:54:58,417 INFO L226 Difference]: Without dead ends: 74 [2025-03-08 22:54:58,417 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 [2025-03-08 22:54:58,417 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 1 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 22:54:58,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 267 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 22:54:58,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-03-08 22:54:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2025-03-08 22:54:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 40 states have (on average 1.625) internal successors, (65), 63 states have internal predecessors, (65), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-08 22:54:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2025-03-08 22:54:58,428 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 11 [2025-03-08 22:54:58,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:54:58,428 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2025-03-08 22:54:58,428 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) [2025-03-08 22:54:58,428 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2025-03-08 22:54:58,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-08 22:54:58,428 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:54:58,428 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:54:58,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 22:54:58,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:54:58,630 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2025-03-08 22:54:58,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:54:58,632 INFO L85 PathProgramCache]: Analyzing trace with hash 974136238, now seen corresponding path program 1 times [2025-03-08 22:54:58,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 22:54:58,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958572206] [2025-03-08 22:54:58,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:54:58,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:54:58,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:54:58,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:54:58,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 22:54:58,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-08 22:54:58,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 22:54:58,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:54:58,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:54:58,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 22:54:58,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:54:58,696 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 [2025-03-08 22:54:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:54:58,732 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:54:58,732 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 22:54:58,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958572206] [2025-03-08 22:54:58,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958572206] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:54:58,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:54:58,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:54:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879244742] [2025-03-08 22:54:58,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:54:58,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:54:58,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 22:54:58,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:54:58,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:54:58,733 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2025-03-08 22:54:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:54:58,953 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2025-03-08 22:54:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 22:54:58,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2025-03-08 22:54:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:54:58,954 INFO L225 Difference]: With dead ends: 89 [2025-03-08 22:54:58,954 INFO L226 Difference]: Without dead ends: 89 [2025-03-08 22:54:58,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 22:54:58,954 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 74 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:54:58,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 66 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:54:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-03-08 22:54:58,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 75. [2025-03-08 22:54:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.619047619047619) internal successors, (68), 65 states have internal predecessors, (68), 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) [2025-03-08 22:54:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2025-03-08 22:54:58,958 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 11 [2025-03-08 22:54:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:54:58,959 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2025-03-08 22:54:58,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2025-03-08 22:54:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2025-03-08 22:54:58,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-08 22:54:58,959 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:54:58,959 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:54:58,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 22:54:59,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:54:59,160 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2025-03-08 22:54:59,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:54:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash 974136239, now seen corresponding path program 1 times [2025-03-08 22:54:59,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 22:54:59,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428365792] [2025-03-08 22:54:59,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:54:59,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:54:59,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:54:59,165 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:54:59,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 22:54:59,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-08 22:54:59,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 22:54:59,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:54:59,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:54:59,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 22:54:59,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:54:59,223 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 [2025-03-08 22:54:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:54:59,272 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:54:59,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 22:54:59,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428365792] [2025-03-08 22:54:59,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428365792] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:54:59,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:54:59,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:54:59,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307419477] [2025-03-08 22:54:59,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:54:59,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:54:59,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 22:54:59,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:54:59,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:54:59,273 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2025-03-08 22:54:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:54:59,467 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2025-03-08 22:54:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:54:59,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2025-03-08 22:54:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:54:59,468 INFO L225 Difference]: With dead ends: 87 [2025-03-08 22:54:59,468 INFO L226 Difference]: Without dead ends: 87 [2025-03-08 22:54:59,469 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 [2025-03-08 22:54:59,469 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:54:59,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 79 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:54:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-03-08 22:54:59,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2025-03-08 22:54:59,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 65 states have internal predecessors, (67), 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) [2025-03-08 22:54:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2025-03-08 22:54:59,473 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 11 [2025-03-08 22:54:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:54:59,473 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2025-03-08 22:54:59,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2025-03-08 22:54:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2025-03-08 22:54:59,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-08 22:54:59,473 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:54:59,473 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:54:59,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 22:54:59,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:54:59,678 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2025-03-08 22:54:59,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:54:59,679 INFO L85 PathProgramCache]: Analyzing trace with hash -231106133, now seen corresponding path program 1 times [2025-03-08 22:54:59,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 22:54:59,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695513571] [2025-03-08 22:54:59,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:54:59,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:54:59,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:54:59,681 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:54:59,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 22:54:59,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-08 22:54:59,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 22:54:59,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:54:59,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:54:59,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 22:54:59,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:55:03,750 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5| (_ BitVec 32))) (= (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|) |v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_3|) |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|)) is different from true [2025-03-08 22:55:03,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-08 22:55:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:55:03,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:55:03,839 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 22:55:03,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695513571] [2025-03-08 22:55:03,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695513571] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:55:03,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:55:03,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 22:55:03,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091214204] [2025-03-08 22:55:03,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:55:03,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 22:55:03,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 22:55:03,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 22:55:03,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=44, Unknown=1, NotChecked=12, Total=72 [2025-03-08 22:55:03,840 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 22:55:04,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:55:04,018 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2025-03-08 22:55:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 22:55:04,019 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2025-03-08 22:55:04,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:55:04,019 INFO L225 Difference]: With dead ends: 75 [2025-03-08 22:55:04,019 INFO L226 Difference]: Without dead ends: 75 [2025-03-08 22:55:04,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2025-03-08 22:55:04,020 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 20 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:55:04,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 277 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 98 Unchecked, 0.1s Time] [2025-03-08 22:55:04,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-03-08 22:55:04,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2025-03-08 22:55:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 64 states have internal predecessors, (66), 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) [2025-03-08 22:55:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2025-03-08 22:55:04,023 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 15 [2025-03-08 22:55:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:55:04,023 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2025-03-08 22:55:04,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 22:55:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2025-03-08 22:55:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-08 22:55:04,023 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:55:04,023 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:55:04,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 22:55:04,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:55:04,224 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2025-03-08 22:55:04,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:55:04,224 INFO L85 PathProgramCache]: Analyzing trace with hash -231106132, now seen corresponding path program 1 times [2025-03-08 22:55:04,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 22:55:04,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744384911] [2025-03-08 22:55:04,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:55:04,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:55:04,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:55:04,227 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:55:04,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 22:55:04,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-08 22:55:04,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 22:55:04,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:55:04,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:55:04,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-08 22:55:04,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:55:04,302 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 [2025-03-08 22:55:04,310 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 [2025-03-08 22:55:04,338 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 7 treesize of output 5 [2025-03-08 22:55:04,342 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 5 treesize of output 3 [2025-03-08 22:55:04,388 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) (exists ((|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7| (_ BitVec 32))) (and (= (_ bv0 32) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|) (_ bv0 32))) (= |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|) (_ bv0 32)))))) is different from true [2025-03-08 22:55:04,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 22:55:04,445 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 [2025-03-08 22:55:04,456 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-08 22:55:04,456 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 [2025-03-08 22:55:04,653 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-03-08 22:55:04,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2025-03-08 22:55:04,661 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-03-08 22:55:04,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2025-03-08 22:55:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:55:04,723 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:55:04,723 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 22:55:04,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744384911] [2025-03-08 22:55:04,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744384911] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:55:04,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:55:04,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 22:55:04,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980249181] [2025-03-08 22:55:04,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:55:04,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 22:55:04,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 22:55:04,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 22:55:04,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=73, Unknown=1, NotChecked=16, Total=110 [2025-03-08 22:55:04,724 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 22:55:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:55:05,300 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2025-03-08 22:55:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 22:55:05,300 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2025-03-08 22:55:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:55:05,301 INFO L225 Difference]: With dead ends: 74 [2025-03-08 22:55:05,301 INFO L226 Difference]: Without dead ends: 74 [2025-03-08 22:55:05,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=165, Unknown=1, NotChecked=26, Total=240 [2025-03-08 22:55:05,301 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 29 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 22:55:05,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 279 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 247 Invalid, 0 Unknown, 89 Unchecked, 0.4s Time] [2025-03-08 22:55:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-03-08 22:55:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2025-03-08 22:55:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 63 states have internal predecessors, (65), 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) [2025-03-08 22:55:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2025-03-08 22:55:05,308 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 15 [2025-03-08 22:55:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:55:05,308 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2025-03-08 22:55:05,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 22:55:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2025-03-08 22:55:05,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 22:55:05,308 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:55:05,308 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:55:05,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 22:55:05,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:55:05,509 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2025-03-08 22:55:05,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:55:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash -157944917, now seen corresponding path program 1 times [2025-03-08 22:55:05,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 22:55:05,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104436671] [2025-03-08 22:55:05,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:55:05,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:55:05,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:55:05,511 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:55:05,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 22:55:05,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 22:55:05,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 22:55:05,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:55:05,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:55:05,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 22:55:05,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:55:05,559 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 [2025-03-08 22:55:05,571 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 7 treesize of output 5 [2025-03-08 22:55:05,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-08 22:55:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:55:05,639 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:55:05,640 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 22:55:05,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104436671] [2025-03-08 22:55:05,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104436671] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:55:05,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:55:05,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 22:55:05,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772475630] [2025-03-08 22:55:05,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:55:05,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 22:55:05,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 22:55:05,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 22:55:05,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 22:55:05,640 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 22:55:09,669 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] [2025-03-08 22:55:13,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:55:17,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:55:21,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:55:25,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:55:29,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:55:33,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:55:37,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:55:41,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:55:45,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:55:49,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:55:53,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:55:57,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:56:01,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:56:05,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:56:09,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:56:13,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:56:17,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:56:21,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:56:25,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:56:30,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:56:34,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 22:56:38,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]