./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:24:45,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:24:45,954 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-09 22:24:45,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:24:45,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:24:45,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:24:45,973 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:24:45,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:24:45,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:24:45,973 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:24:45,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:24:45,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:24:45,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:24:45,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:24:45,974 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:24:45,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:24:45,974 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:24:45,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:24:45,974 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:24:45,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:24:45,975 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:24:45,975 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:24:45,975 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:24:45,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:24:45,975 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:24:45,975 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:24:45,975 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:24:45,975 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:24:45,975 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:24:45,975 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:24:45,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:24:45,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:24:45,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:24:45,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:24:45,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:24:45,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:24:45,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:24:45,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:24:45,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:24:45,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:24:45,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:24:45,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 22:24:45,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 22:24:45,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:24:45,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:24:45,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:24:45,977 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:24:45,977 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2025-01-09 22:24:46,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:24:46,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:24:46,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:24:46,205 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:24:46,206 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:24:46,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2025-01-09 22:24:47,399 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7c025b805/8c76cacb3c344d68968231814a15ce58/FLAG521299888 [2025-01-09 22:24:47,417 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException: Cannot invoke "String.equalsIgnoreCase(String)" because "kindStr" is null at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2025-01-09 22:24:47,666 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:24:47,667 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2025-01-09 22:24:47,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7c025b805/8c76cacb3c344d68968231814a15ce58/FLAG521299888 [2025-01-09 22:24:47,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7c025b805/8c76cacb3c344d68968231814a15ce58 [2025-01-09 22:24:47,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:24:47,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:24:47,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:24:47,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:24:47,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:24:47,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:24:47" (1/1) ... [2025-01-09 22:24:47,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7bc8e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:47, skipping insertion in model container [2025-01-09 22:24:47,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:24:47" (1/1) ... [2025-01-09 22:24:47,736 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:24:47,954 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:48,004 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:48,006 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:48,011 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:48,012 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:48,012 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:48,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:24:48,034 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-01-09 22:24:48,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a847a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:48, skipping insertion in model container [2025-01-09 22:24:48,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:24:48,038 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-09 22:24:48,040 INFO L158 Benchmark]: Toolchain (without parser) took 342.87ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 96.2MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:24:48,040 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:24:48,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.92ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 96.2MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:24:48,041 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 128.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.92ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 96.2MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:24:49,864 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:24:49,962 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-09 22:24:49,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:24:49,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:24:49,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:24:49,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:24:49,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:24:49,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:24:49,997 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:24:49,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:24:49,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:24:49,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:24:49,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:24:49,997 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:24:49,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:24:49,998 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:24:49,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:24:49,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:24:49,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:24:49,999 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2025-01-09 22:24:50,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:24:50,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:24:50,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:24:50,316 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:24:50,316 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:24:50,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2025-01-09 22:24:51,517 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/56788c349/63766a97ea9347eba636eccbcb23815d/FLAG3e7b38903 [2025-01-09 22:24:51,750 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:24:51,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2025-01-09 22:24:51,759 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/56788c349/63766a97ea9347eba636eccbcb23815d/FLAG3e7b38903 [2025-01-09 22:24:52,088 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/56788c349/63766a97ea9347eba636eccbcb23815d [2025-01-09 22:24:52,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:24:52,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:24:52,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:24:52,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:24:52,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:24:52,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520a5dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52, skipping insertion in model container [2025-01-09 22:24:52,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:24:52,417 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,460 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,462 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,462 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,463 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,463 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:24:52,480 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-09 22:24:52,486 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:24:52,505 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,518 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,519 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,520 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,520 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,521 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:24:52,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:24:52,530 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 22:24:52,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:24:52,607 INFO L204 MainTranslator]: Completed translation [2025-01-09 22:24:52,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52 WrapperNode [2025-01-09 22:24:52,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:24:52,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 22:24:52,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 22:24:52,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 22:24:52,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,635 INFO L138 Inliner]: procedures = 169, calls = 88, calls flagged for inlining = 26, calls inlined = 8, statements flattened = 97 [2025-01-09 22:24:52,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 22:24:52,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 22:24:52,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 22:24:52,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 22:24:52,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,644 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,655 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-01-09 22:24:52,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,660 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 22:24:52,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 22:24:52,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 22:24:52,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 22:24:52,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (1/1) ... [2025-01-09 22:24:52,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:24:52,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:52,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 22:24:52,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 22:24:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-01-09 22:24:52,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-01-09 22:24:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_i2c_set_clientdata [2025-01-09 22:24:52,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_i2c_set_clientdata [2025-01-09 22:24:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 22:24:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 22:24:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 22:24:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 22:24:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 22:24:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 22:24:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 22:24:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 22:24:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 22:24:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 22:24:52,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 22:24:52,860 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 22:24:52,863 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 22:24:53,104 INFO L? ?]: Removed 95 outVars from TransFormulas that were not future-live. [2025-01-09 22:24:53,104 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 22:24:53,110 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 22:24:53,111 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 22:24:53,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:24:53 BoogieIcfgContainer [2025-01-09 22:24:53,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 22:24:53,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 22:24:53,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 22:24:53,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 22:24:53,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:24:52" (1/3) ... [2025-01-09 22:24:53,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbb25a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:24:53, skipping insertion in model container [2025-01-09 22:24:53,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:52" (2/3) ... [2025-01-09 22:24:53,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbb25a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:24:53, skipping insertion in model container [2025-01-09 22:24:53,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:24:53" (3/3) ... [2025-01-09 22:24:53,117 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test11_1.i [2025-01-09 22:24:53,128 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 22:24:53,129 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test11_1.i that has 3 procedures, 90 locations, 1 initial locations, 0 loop locations, and 30 error locations. [2025-01-09 22:24:53,151 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 22:24:53,158 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;@2dccc8e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 22:24:53,158 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2025-01-09 22:24:53,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:24:53,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 22:24:53,164 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:53,165 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:53,165 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:24:53,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:53,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2113619829, now seen corresponding path program 1 times [2025-01-09 22:24:53,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:24:53,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361866614] [2025-01-09 22:24:53,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:53,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:53,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:53,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:53,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 22:24:53,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 22:24:53,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 22:24:53,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:53,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:53,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:24:53,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:53,346 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:24:53,347 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:24:53,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361866614] [2025-01-09 22:24:53,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361866614] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:53,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:53,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:24:53,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982251886] [2025-01-09 22:24:53,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:53,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:24:53,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:24:53,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:24:53,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:24:53,368 INFO L87 Difference]: Start difference. First operand has 90 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:24:53,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:53,450 INFO L93 Difference]: Finished difference Result 159 states and 187 transitions. [2025-01-09 22:24:53,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:24:53,452 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 [2025-01-09 22:24:53,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:53,457 INFO L225 Difference]: With dead ends: 159 [2025-01-09 22:24:53,457 INFO L226 Difference]: Without dead ends: 157 [2025-01-09 22:24:53,458 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 [2025-01-09 22:24:53,461 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 64 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:53,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 465 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:53,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-01-09 22:24:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 92. [2025-01-09 22:24:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 82 states have internal predecessors, (88), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2025-01-09 22:24:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2025-01-09 22:24:53,493 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 11 [2025-01-09 22:24:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:53,494 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2025-01-09 22:24:53,494 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) [2025-01-09 22:24:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2025-01-09 22:24:53,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 22:24:53,495 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:53,495 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:53,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 22:24:53,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:53,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:24:53,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1293843786, now seen corresponding path program 1 times [2025-01-09 22:24:53,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:24:53,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138335400] [2025-01-09 22:24:53,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:53,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:53,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:53,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:53,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 22:24:53,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 22:24:53,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 22:24:53,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:53,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:53,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:24:53,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:53,825 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:24:53,825 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:24:53,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138335400] [2025-01-09 22:24:53,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138335400] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:53,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:53,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:24:53,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13363609] [2025-01-09 22:24:53,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:53,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:24:53,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:53,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:53,827 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:24:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:54,001 INFO L93 Difference]: Finished difference Result 163 states and 186 transitions. [2025-01-09 22:24:54,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:24:54,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-01-09 22:24:54,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:54,002 INFO L225 Difference]: With dead ends: 163 [2025-01-09 22:24:54,002 INFO L226 Difference]: Without dead ends: 161 [2025-01-09 22:24:54,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:54,003 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 70 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:54,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 309 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:24:54,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-01-09 22:24:54,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 88. [2025-01-09 22:24:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 50 states have (on average 1.68) internal successors, (84), 79 states have internal predecessors, (84), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:24:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2025-01-09 22:24:54,009 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 11 [2025-01-09 22:24:54,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:54,009 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2025-01-09 22:24:54,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:24:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2025-01-09 22:24:54,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 22:24:54,009 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:54,010 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:54,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:54,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:54,214 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:24:54,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:54,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026591, now seen corresponding path program 1 times [2025-01-09 22:24:54,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:24:54,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27541299] [2025-01-09 22:24:54,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:54,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:54,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:54,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:54,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 22:24:54,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 22:24:54,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 22:24:54,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:54,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:54,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:24:54,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:24:54,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:24:54,357 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:24:54,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27541299] [2025-01-09 22:24:54,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27541299] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:54,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:24:54,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2025-01-09 22:24:54,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310787694] [2025-01-09 22:24:54,357 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:54,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:24:54,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:24:54,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:24:54,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:24:54,359 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:24:54,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:54,408 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2025-01-09 22:24:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:24:54,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2025-01-09 22:24:54,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:54,413 INFO L225 Difference]: With dead ends: 87 [2025-01-09 22:24:54,413 INFO L226 Difference]: Without dead ends: 87 [2025-01-09 22:24:54,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:24:54,414 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 59 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:54,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 281 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:54,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-01-09 22:24:54,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2025-01-09 22:24:54,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 50 states have (on average 1.66) internal successors, (83), 78 states have internal predecessors, (83), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:24:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2025-01-09 22:24:54,421 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 17 [2025-01-09 22:24:54,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:54,421 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2025-01-09 22:24:54,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:24:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2025-01-09 22:24:54,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 22:24:54,424 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:54,424 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:54,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 22:24:54,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:54,629 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:24:54,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:54,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026607, now seen corresponding path program 1 times [2025-01-09 22:24:54,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:24:54,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003170548] [2025-01-09 22:24:54,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:54,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:54,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:54,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:54,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 22:24:54,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 22:24:54,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 22:24:54,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:54,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:54,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 22:24:54,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:54,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:24:54,745 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 [2025-01-09 22:24:54,798 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-09 22:24:54,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-01-09 22:24:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2025-01-09 22:24:54,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:54,960 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:24:54,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003170548] [2025-01-09 22:24:54,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003170548] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:54,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:24:54,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2025-01-09 22:24:54,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879740857] [2025-01-09 22:24:54,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:54,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 22:24:54,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:24:54,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 22:24:54,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2025-01-09 22:24:54,961 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:24:55,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:55,269 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2025-01-09 22:24:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:24:55,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2025-01-09 22:24:55,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:55,270 INFO L225 Difference]: With dead ends: 125 [2025-01-09 22:24:55,271 INFO L226 Difference]: Without dead ends: 125 [2025-01-09 22:24:55,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2025-01-09 22:24:55,271 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 71 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:55,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 217 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 231 Invalid, 0 Unknown, 140 Unchecked, 0.3s Time] [2025-01-09 22:24:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-01-09 22:24:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 98. [2025-01-09 22:24:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.6101694915254237) internal successors, (95), 87 states have internal predecessors, (95), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2025-01-09 22:24:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 114 transitions. [2025-01-09 22:24:55,284 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 114 transitions. Word has length 17 [2025-01-09 22:24:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:55,285 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 114 transitions. [2025-01-09 22:24:55,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:24:55,285 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 114 transitions. [2025-01-09 22:24:55,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 22:24:55,285 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:55,285 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:55,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 22:24:55,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:55,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:24:55,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:55,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026606, now seen corresponding path program 1 times [2025-01-09 22:24:55,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:24:55,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990137588] [2025-01-09 22:24:55,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:55,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:55,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:55,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:55,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 22:24:55,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 22:24:55,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 22:24:55,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:55,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:55,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 22:24:55,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:55,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:24:55,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:24:55,667 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 [2025-01-09 22:24:55,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:24:55,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:24:55,705 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:24:55,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:24:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2025-01-09 22:24:55,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:55,886 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:24:55,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990137588] [2025-01-09 22:24:55,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990137588] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:55,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1893058432] [2025-01-09 22:24:55,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:55,886 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:24:55,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:24:55,892 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:24:55,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2025-01-09 22:24:55,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 22:24:55,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 22:24:55,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:55,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:55,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 22:24:55,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:56,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:24:56,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:24:56,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:24:56,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:24:56,101 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:24:56,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:24:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2025-01-09 22:24:56,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:56,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1893058432] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:56,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:24:56,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2025-01-09 22:24:56,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991696404] [2025-01-09 22:24:56,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:56,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 22:24:56,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:24:56,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 22:24:56,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2025-01-09 22:24:56,215 INFO L87 Difference]: Start difference. First operand 98 states and 114 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:24:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:56,812 INFO L93 Difference]: Finished difference Result 216 states and 248 transitions. [2025-01-09 22:24:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 22:24:56,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2025-01-09 22:24:56,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:56,814 INFO L225 Difference]: With dead ends: 216 [2025-01-09 22:24:56,814 INFO L226 Difference]: Without dead ends: 216 [2025-01-09 22:24:56,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=105, Unknown=1, NotChecked=20, Total=156 [2025-01-09 22:24:56,815 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 123 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:56,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 597 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 529 Invalid, 0 Unknown, 242 Unchecked, 0.5s Time] [2025-01-09 22:24:56,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-01-09 22:24:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 98. [2025-01-09 22:24:56,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.5932203389830508) internal successors, (94), 87 states have internal predecessors, (94), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2025-01-09 22:24:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2025-01-09 22:24:56,821 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 17 [2025-01-09 22:24:56,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:56,821 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2025-01-09 22:24:56,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:24:56,821 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2025-01-09 22:24:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 22:24:56,821 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:56,822 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:56,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:57,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:57,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:57,224 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:24:57,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2086429614, now seen corresponding path program 1 times [2025-01-09 22:24:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:24:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549316517] [2025-01-09 22:24:57,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:57,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:57,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:57,228 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:57,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 22:24:57,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 22:24:57,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 22:24:57,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:57,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:57,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 22:24:57,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:57,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:57,320 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:24:57,320 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:24:57,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549316517] [2025-01-09 22:24:57,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549316517] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:57,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:57,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:24:57,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245217758] [2025-01-09 22:24:57,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:57,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:24:57,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:24:57,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:24:57,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:24:57,321 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:24:57,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:57,343 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2025-01-09 22:24:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:24:57,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2025-01-09 22:24:57,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:57,344 INFO L225 Difference]: With dead ends: 92 [2025-01-09 22:24:57,344 INFO L226 Difference]: Without dead ends: 90 [2025-01-09 22:24:57,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:24:57,345 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:57,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 373 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-01-09 22:24:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2025-01-09 22:24:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 81 states have internal predecessors, (86), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-01-09 22:24:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2025-01-09 22:24:57,349 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 17 [2025-01-09 22:24:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:57,349 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2025-01-09 22:24:57,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:24:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2025-01-09 22:24:57,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 22:24:57,349 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:57,349 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:57,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 22:24:57,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:57,554 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:24:57,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:57,554 INFO L85 PathProgramCache]: Analyzing trace with hash 250750662, now seen corresponding path program 1 times [2025-01-09 22:24:57,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:24:57,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772467401] [2025-01-09 22:24:57,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:57,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:57,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:57,557 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:57,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 22:24:57,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 22:24:57,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 22:24:57,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:57,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:57,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:24:57,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:24:57,632 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:24:57,633 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:24:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772467401] [2025-01-09 22:24:57,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772467401] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:57,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:57,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:24:57,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047154147] [2025-01-09 22:24:57,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:57,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:24:57,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:24:57,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:24:57,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:24:57,634 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:24:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:57,670 INFO L93 Difference]: Finished difference Result 146 states and 170 transitions. [2025-01-09 22:24:57,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:24:57,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2025-01-09 22:24:57,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:57,671 INFO L225 Difference]: With dead ends: 146 [2025-01-09 22:24:57,671 INFO L226 Difference]: Without dead ends: 146 [2025-01-09 22:24:57,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:24:57,672 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 53 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:57,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 325 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-01-09 22:24:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 92. [2025-01-09 22:24:57,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 82 states have internal predecessors, (88), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2025-01-09 22:24:57,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2025-01-09 22:24:57,680 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 18 [2025-01-09 22:24:57,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:57,680 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2025-01-09 22:24:57,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:24:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2025-01-09 22:24:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 22:24:57,681 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:57,681 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:57,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:57,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:57,886 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:24:57,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:57,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1138254343, now seen corresponding path program 1 times [2025-01-09 22:24:57,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:24:57,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889703762] [2025-01-09 22:24:57,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:57,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:57,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:57,889 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:57,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 22:24:57,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 22:24:57,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 22:24:57,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:57,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:57,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:24:57,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:57,979 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:24:58,009 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:24:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889703762] [2025-01-09 22:24:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889703762] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:58,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:24:58,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2025-01-09 22:24:58,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006702122] [2025-01-09 22:24:58,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:58,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:24:58,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:24:58,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:24:58,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:24:58,010 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:24:58,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:58,096 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2025-01-09 22:24:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:24:58,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2025-01-09 22:24:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:58,097 INFO L225 Difference]: With dead ends: 91 [2025-01-09 22:24:58,097 INFO L226 Difference]: Without dead ends: 91 [2025-01-09 22:24:58,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:24:58,097 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 71 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:58,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 200 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-01-09 22:24:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2025-01-09 22:24:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 81 states have internal predecessors, (86), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2025-01-09 22:24:58,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2025-01-09 22:24:58,101 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 18 [2025-01-09 22:24:58,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:58,101 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2025-01-09 22:24:58,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:24:58,102 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2025-01-09 22:24:58,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 22:24:58,102 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:58,102 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:58,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:58,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:58,303 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:24:58,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash 968466533, now seen corresponding path program 1 times [2025-01-09 22:24:58,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:24:58,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909334208] [2025-01-09 22:24:58,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:58,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:58,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:58,306 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:58,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 22:24:58,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 22:24:58,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:58,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:58,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:58,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 22:24:58,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:58,444 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_19| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_19| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_19|)))) is different from true [2025-01-09 22:24:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:24:58,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:58,498 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2025-01-09 22:24:58,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2025-01-09 22:24:58,577 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:24:58,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909334208] [2025-01-09 22:24:58,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909334208] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:58,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1385640262] [2025-01-09 22:24:58,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:58,578 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:24:58,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:24:58,581 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:24:58,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2025-01-09 22:24:58,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 22:24:58,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:58,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:58,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:58,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 22:24:58,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:24:58,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:58,843 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2025-01-09 22:24:58,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2025-01-09 22:24:58,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1385640262] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:58,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:24:58,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2025-01-09 22:24:58,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603619451] [2025-01-09 22:24:58,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:58,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 22:24:58,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:24:58,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 22:24:58,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=106, Unknown=1, NotChecked=20, Total=156 [2025-01-09 22:24:58,997 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 22:24:59,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:59,569 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2025-01-09 22:24:59,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 22:24:59,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2025-01-09 22:24:59,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:59,571 INFO L225 Difference]: With dead ends: 151 [2025-01-09 22:24:59,571 INFO L226 Difference]: Without dead ends: 146 [2025-01-09 22:24:59,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=221, Unknown=1, NotChecked=30, Total=306 [2025-01-09 22:24:59,572 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 138 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:59,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 600 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 568 Invalid, 0 Unknown, 167 Unchecked, 0.5s Time] [2025-01-09 22:24:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-01-09 22:24:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 86. [2025-01-09 22:24:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 77 states have internal predecessors, (80), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-01-09 22:24:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2025-01-09 22:24:59,578 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 21 [2025-01-09 22:24:59,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:59,579 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2025-01-09 22:24:59,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 22:24:59,579 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2025-01-09 22:24:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 22:24:59,579 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:59,579 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:59,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2025-01-09 22:24:59,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:59,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:59,982 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:24:59,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:59,983 INFO L85 PathProgramCache]: Analyzing trace with hash -406257806, now seen corresponding path program 1 times [2025-01-09 22:24:59,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:24:59,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846159775] [2025-01-09 22:24:59,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:59,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:59,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:59,986 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:59,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 22:25:00,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 22:25:00,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 22:25:00,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:00,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:00,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 22:25:00,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:00,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:25:00,112 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 [2025-01-09 22:25:00,149 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-09 22:25:00,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-01-09 22:25:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2025-01-09 22:25:00,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:25:04,313 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:25:04,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846159775] [2025-01-09 22:25:04,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846159775] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:04,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:25:04,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2025-01-09 22:25:04,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365340578] [2025-01-09 22:25:04,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:04,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 22:25:04,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:25:04,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 22:25:04,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=40, Unknown=2, NotChecked=12, Total=72 [2025-01-09 22:25:04,313 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 22:25:04,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:04,606 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2025-01-09 22:25:04,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:25:04,606 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2025-01-09 22:25:04,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:04,607 INFO L225 Difference]: With dead ends: 118 [2025-01-09 22:25:04,607 INFO L226 Difference]: Without dead ends: 118 [2025-01-09 22:25:04,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=23, Invalid=51, Unknown=2, NotChecked=14, Total=90 [2025-01-09 22:25:04,607 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 54 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:04,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 301 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 286 Invalid, 0 Unknown, 131 Unchecked, 0.3s Time] [2025-01-09 22:25:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-01-09 22:25:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 96. [2025-01-09 22:25:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 60 states have (on average 1.55) internal successors, (93), 85 states have internal predecessors, (93), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2025-01-09 22:25:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2025-01-09 22:25:04,610 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 25 [2025-01-09 22:25:04,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:04,611 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2025-01-09 22:25:04,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 22:25:04,611 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2025-01-09 22:25:04,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 22:25:04,611 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:04,611 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:25:04,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 22:25:04,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:04,812 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:25:04,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:04,813 INFO L85 PathProgramCache]: Analyzing trace with hash -406257805, now seen corresponding path program 1 times [2025-01-09 22:25:04,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:25:04,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943647770] [2025-01-09 22:25:04,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:04,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:04,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:04,816 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:04,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 22:25:04,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 22:25:04,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 22:25:04,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:04,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:04,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 22:25:04,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:04,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:25:04,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:25:04,982 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 [2025-01-09 22:25:05,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:25:05,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:25:05,016 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:25:05,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:25:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2025-01-09 22:25:05,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:05,194 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:25:05,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943647770] [2025-01-09 22:25:05,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943647770] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:05,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1169590392] [2025-01-09 22:25:05,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:05,195 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:25:05,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:25:05,196 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:25:05,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2025-01-09 22:25:05,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 22:25:05,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 22:25:05,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:05,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:05,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 22:25:05,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:05,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:25:05,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:25:05,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:25:05,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:25:05,363 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:25:05,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:25:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2025-01-09 22:25:05,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:09,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1169590392] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:09,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:25:09,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2025-01-09 22:25:09,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87062461] [2025-01-09 22:25:09,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:09,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 22:25:09,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:25:09,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 22:25:09,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2025-01-09 22:25:09,449 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:25:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:09,792 INFO L93 Difference]: Finished difference Result 181 states and 205 transitions. [2025-01-09 22:25:09,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 22:25:09,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2025-01-09 22:25:09,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:09,793 INFO L225 Difference]: With dead ends: 181 [2025-01-09 22:25:09,793 INFO L226 Difference]: Without dead ends: 181 [2025-01-09 22:25:09,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=30, Invalid=105, Unknown=1, NotChecked=20, Total=156 [2025-01-09 22:25:09,794 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 106 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:09,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 427 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 352 Invalid, 0 Unknown, 199 Unchecked, 0.3s Time] [2025-01-09 22:25:09,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-01-09 22:25:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 125. [2025-01-09 22:25:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 86 states have (on average 1.5813953488372092) internal successors, (136), 111 states have internal predecessors, (136), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) [2025-01-09 22:25:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2025-01-09 22:25:09,806 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 25 [2025-01-09 22:25:09,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:09,806 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2025-01-09 22:25:09,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:25:09,806 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2025-01-09 22:25:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 22:25:09,807 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:09,807 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:25:09,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2025-01-09 22:25:10,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 22:25:10,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:10,208 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:25:10,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash -911816431, now seen corresponding path program 1 times [2025-01-09 22:25:10,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:25:10,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47105639] [2025-01-09 22:25:10,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:10,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:10,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:10,210 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:10,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 22:25:10,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 22:25:10,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 22:25:10,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:10,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:10,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 22:25:10,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:25:10,295 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:25:10,295 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:25:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47105639] [2025-01-09 22:25:10,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47105639] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:25:10,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:25:10,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:25:10,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475608247] [2025-01-09 22:25:10,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:25:10,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:25:10,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:25:10,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:25:10,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:25:10,296 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:25:10,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:10,321 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2025-01-09 22:25:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:25:10,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2025-01-09 22:25:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:10,322 INFO L225 Difference]: With dead ends: 88 [2025-01-09 22:25:10,322 INFO L226 Difference]: Without dead ends: 86 [2025-01-09 22:25:10,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:25:10,322 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:10,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:25:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-01-09 22:25:10,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2025-01-09 22:25:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 54 states have (on average 1.5) internal successors, (81), 77 states have internal predecessors, (81), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-01-09 22:25:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2025-01-09 22:25:10,327 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 25 [2025-01-09 22:25:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:10,327 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2025-01-09 22:25:10,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:25:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2025-01-09 22:25:10,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-09 22:25:10,327 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:10,327 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:25:10,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-09 22:25:10,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:10,528 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:25:10,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash 290909999, now seen corresponding path program 1 times [2025-01-09 22:25:10,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:25:10,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295333063] [2025-01-09 22:25:10,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:10,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:10,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:10,531 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:10,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 22:25:10,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-09 22:25:10,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 22:25:10,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:10,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:10,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:25:10,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 22:25:10,602 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:25:10,603 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:25:10,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295333063] [2025-01-09 22:25:10,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295333063] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:25:10,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:25:10,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:25:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605216437] [2025-01-09 22:25:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:25:10,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:25:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:25:10,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:25:10,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:25:10,603 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:25:10,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:10,645 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2025-01-09 22:25:10,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:25:10,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2025-01-09 22:25:10,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:10,648 INFO L225 Difference]: With dead ends: 132 [2025-01-09 22:25:10,648 INFO L226 Difference]: Without dead ends: 132 [2025-01-09 22:25:10,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:25:10,649 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 43 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:10,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 389 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:25:10,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-01-09 22:25:10,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 88. [2025-01-09 22:25:10,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 78 states have internal predecessors, (83), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-01-09 22:25:10,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2025-01-09 22:25:10,651 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 26 [2025-01-09 22:25:10,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:10,652 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2025-01-09 22:25:10,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:25:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2025-01-09 22:25:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-09 22:25:10,655 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:10,655 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:25:10,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 22:25:10,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:10,856 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:25:10,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1178413680, now seen corresponding path program 1 times [2025-01-09 22:25:10,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:25:10,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542990109] [2025-01-09 22:25:10,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:10,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:10,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:10,858 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:10,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 22:25:10,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-09 22:25:10,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 22:25:10,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:10,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:10,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:25:10,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:10,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:25:10,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 22:25:10,998 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:25:10,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542990109] [2025-01-09 22:25:10,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542990109] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:10,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:25:10,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2025-01-09 22:25:10,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460896009] [2025-01-09 22:25:10,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:10,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:25:10,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:25:10,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:25:10,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:25:10,999 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 22:25:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:11,109 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2025-01-09 22:25:11,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:25:11,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2025-01-09 22:25:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:11,110 INFO L225 Difference]: With dead ends: 87 [2025-01-09 22:25:11,110 INFO L226 Difference]: Without dead ends: 87 [2025-01-09 22:25:11,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:25:11,111 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 66 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:11,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 197 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:25:11,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-01-09 22:25:11,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2025-01-09 22:25:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 77 states have internal predecessors, (81), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-01-09 22:25:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2025-01-09 22:25:11,113 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 26 [2025-01-09 22:25:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:11,113 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2025-01-09 22:25:11,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 22:25:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2025-01-09 22:25:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 22:25:11,113 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:11,114 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:25:11,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-09 22:25:11,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:11,314 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:25:11,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash 428272563, now seen corresponding path program 1 times [2025-01-09 22:25:11,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:25:11,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683423467] [2025-01-09 22:25:11,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:11,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:11,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:11,317 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:11,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 22:25:11,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 22:25:11,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 22:25:11,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:11,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:11,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 22:25:11,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:11,387 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 [2025-01-09 22:25:11,404 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-09 22:25:11,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-01-09 22:25:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 22:25:11,414 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:25:11,414 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:25:11,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683423467] [2025-01-09 22:25:11,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683423467] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:25:11,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:25:11,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:25:11,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848083308] [2025-01-09 22:25:11,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:25:11,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:25:11,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:25:11,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:25:11,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2025-01-09 22:25:11,417 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:25:11,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:11,545 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2025-01-09 22:25:11,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:25:11,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2025-01-09 22:25:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:11,546 INFO L225 Difference]: With dead ends: 121 [2025-01-09 22:25:11,546 INFO L226 Difference]: Without dead ends: 121 [2025-01-09 22:25:11,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2025-01-09 22:25:11,546 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 69 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:11,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 244 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 145 Unchecked, 0.1s Time] [2025-01-09 22:25:11,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-01-09 22:25:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 86. [2025-01-09 22:25:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 76 states have internal predecessors, (80), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-01-09 22:25:11,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2025-01-09 22:25:11,549 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 27 [2025-01-09 22:25:11,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:11,549 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2025-01-09 22:25:11,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:25:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2025-01-09 22:25:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 22:25:11,550 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:11,550 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:25:11,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-09 22:25:11,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:11,750 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:25:11,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:11,750 INFO L85 PathProgramCache]: Analyzing trace with hash 428272564, now seen corresponding path program 1 times [2025-01-09 22:25:11,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:25:11,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705327890] [2025-01-09 22:25:11,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:11,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:11,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:11,754 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:11,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 22:25:11,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 22:25:11,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 22:25:11,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:11,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:11,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 22:25:11,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:11,882 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 [2025-01-09 22:25:11,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:25:11,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:25:11,900 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:25:11,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:25:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2025-01-09 22:25:11,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:16,092 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:25:16,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705327890] [2025-01-09 22:25:16,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705327890] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:16,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1764387494] [2025-01-09 22:25:16,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:16,092 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:25:16,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:25:16,098 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:25:16,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2025-01-09 22:25:16,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 22:25:16,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 22:25:16,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:16,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:16,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-09 22:25:16,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:16,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:25:16,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:25:16,409 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-01-09 22:25:16,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2025-01-09 22:25:16,419 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:25:16,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:25:16,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:25:16,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:25:16,522 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:25:16,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:25:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2025-01-09 22:25:16,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:16,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1764387494] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:16,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:25:16,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2025-01-09 22:25:16,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533944254] [2025-01-09 22:25:16,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:16,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 22:25:16,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:25:16,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 22:25:16,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=319, Unknown=2, NotChecked=36, Total=420 [2025-01-09 22:25:16,661 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-01-09 22:25:17,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:17,474 INFO L93 Difference]: Finished difference Result 184 states and 205 transitions. [2025-01-09 22:25:17,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 22:25:17,475 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 27 [2025-01-09 22:25:17,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:17,475 INFO L225 Difference]: With dead ends: 184 [2025-01-09 22:25:17,475 INFO L226 Difference]: Without dead ends: 184 [2025-01-09 22:25:17,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=120, Invalid=584, Unknown=2, NotChecked=50, Total=756 [2025-01-09 22:25:17,476 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 205 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:17,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1093 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 774 Invalid, 0 Unknown, 203 Unchecked, 0.7s Time] [2025-01-09 22:25:17,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2025-01-09 22:25:17,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 85. [2025-01-09 22:25:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 75 states have internal predecessors, (79), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-01-09 22:25:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2025-01-09 22:25:17,479 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 27 [2025-01-09 22:25:17,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:17,479 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2025-01-09 22:25:17,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-01-09 22:25:17,479 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2025-01-09 22:25:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 22:25:17,479 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:17,479 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:25:17,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-09 22:25:17,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2025-01-09 22:25:17,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-01-09 22:25:17,882 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:25:17,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:17,882 INFO L85 PathProgramCache]: Analyzing trace with hash -746927052, now seen corresponding path program 1 times [2025-01-09 22:25:17,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:25:17,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597761909] [2025-01-09 22:25:17,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:17,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:17,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:17,885 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:17,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-09 22:25:17,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 22:25:17,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 22:25:17,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:17,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:17,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 22:25:17,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:17,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:25:18,003 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:25:18,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:25:18,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 22:25:22,049 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_9| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_16| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_16| (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_16|) |v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_9|)))) is different from true [2025-01-09 22:25:22,096 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-01-09 22:25:22,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2025-01-09 22:25:22,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2025-01-09 22:25:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2025-01-09 22:25:22,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:22,225 INFO L349 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2025-01-09 22:25:22,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2025-01-09 22:25:23,116 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:25:23,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597761909] [2025-01-09 22:25:23,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597761909] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:23,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [443650627] [2025-01-09 22:25:23,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:23,117 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:25:23,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:25:23,119 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:25:23,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2025-01-09 22:25:23,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 22:25:23,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 22:25:23,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:23,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:23,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 22:25:23,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:23,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:25:23,356 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:25:23,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:25:23,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 22:25:27,460 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18|) (_ bv0 32)) |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18|))) is different from true [2025-01-09 22:25:27,555 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-01-09 22:25:27,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2025-01-09 22:25:27,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2025-01-09 22:25:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2025-01-09 22:25:27,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:27,653 INFO L349 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2025-01-09 22:25:27,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2025-01-09 22:25:27,657 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_254 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_254) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|) |c_ULTIMATE.start_entry_point_~cfg~1#1.base|)) is different from false [2025-01-09 22:25:27,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [443650627] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:27,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:25:27,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2025-01-09 22:25:27,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746466484] [2025-01-09 22:25:27,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:27,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-09 22:25:27,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:25:27,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-09 22:25:27,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=12, NotChecked=144, Total=756 [2025-01-09 22:25:27,670 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 20 states have internal predecessors, (38), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-09 22:25:36,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:36,773 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2025-01-09 22:25:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 22:25:36,774 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 20 states have internal predecessors, (38), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2025-01-09 22:25:36,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:36,775 INFO L225 Difference]: With dead ends: 140 [2025-01-09 22:25:36,775 INFO L226 Difference]: Without dead ends: 140 [2025-01-09 22:25:36,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=237, Invalid=1167, Unknown=14, NotChecked=222, Total=1640 [2025-01-09 22:25:36,776 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 165 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:36,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1034 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 991 Invalid, 0 Unknown, 304 Unchecked, 0.8s Time] [2025-01-09 22:25:36,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-01-09 22:25:36,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 91. [2025-01-09 22:25:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 80 states have internal predecessors, (85), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-01-09 22:25:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2025-01-09 22:25:36,779 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 29 [2025-01-09 22:25:36,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:36,779 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2025-01-09 22:25:36,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 20 states have internal predecessors, (38), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-09 22:25:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2025-01-09 22:25:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 22:25:36,781 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:36,781 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:25:36,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-09 22:25:36,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2025-01-09 22:25:37,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-01-09 22:25:37,185 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:25:37,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:37,185 INFO L85 PathProgramCache]: Analyzing trace with hash -746927051, now seen corresponding path program 1 times [2025-01-09 22:25:37,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:25:37,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827199931] [2025-01-09 22:25:37,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:37,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:37,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:37,188 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:37,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-09 22:25:37,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 22:25:37,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 22:25:37,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:37,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:37,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 22:25:37,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:37,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:25:37,312 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:25:37,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:25:37,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 22:25:37,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 22:25:37,492 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-01-09 22:25:37,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2025-01-09 22:25:37,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2025-01-09 22:25:37,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-01-09 22:25:37,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-01-09 22:25:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:25:37,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:37,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 22:25:37,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 54 [2025-01-09 22:25:37,830 WARN L851 $PredicateComparison]: unable to prove that (and (or (forall ((v_prenex_9 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_prenex_9) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))) (forall ((v_ArrVal_276 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_276) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))) (forall ((v_prenex_9 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_prenex_9) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset|))) (forall ((v_ArrVal_277 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_277) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) is different from false [2025-01-09 22:25:37,879 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:25:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827199931] [2025-01-09 22:25:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827199931] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [368372937] [2025-01-09 22:25:37,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:25:37,879 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:25:37,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:25:37,881 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:25:37,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2025-01-09 22:25:37,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 22:25:38,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 22:25:38,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:38,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:38,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-01-09 22:25:38,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:38,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:25:38,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:25:42,275 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-01-09 22:25:42,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-01-09 22:25:42,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 22:25:42,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 22:25:42,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-09 22:25:42,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-01-09 22:25:42,577 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22| (_ BitVec 32))) (and (not (= |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22| (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22|) (_ bv0 32)))) (= (_ bv0 32) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22|) (_ bv0 32)))))) is different from true [2025-01-09 22:25:42,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:25:42,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:25:42,626 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2025-01-09 22:25:42,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2025-01-09 22:25:42,824 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2025-01-09 22:25:42,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 60 [2025-01-09 22:25:42,857 INFO L349 Elim1Store]: treesize reduction 29, result has 31.0 percent of original size [2025-01-09 22:25:42,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 29 [2025-01-09 22:25:42,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2025-01-09 22:25:43,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-01-09 22:25:43,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-01-09 22:25:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2025-01-09 22:25:43,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:43,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [368372937] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:43,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:25:43,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2025-01-09 22:25:43,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106969952] [2025-01-09 22:25:43,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:43,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 22:25:43,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:25:43,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 22:25:43,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1053, Unknown=27, NotChecked=134, Total=1332 [2025-01-09 22:25:43,744 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-09 22:25:47,776 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] [2025-01-09 22:25:51,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:25:55,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:26:04,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:26:08,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:26:10,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:26:14,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:26:16,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:26:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:26:16,483 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2025-01-09 22:26:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 22:26:16,483 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2025-01-09 22:26:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:26:16,484 INFO L225 Difference]: With dead ends: 130 [2025-01-09 22:26:16,484 INFO L226 Difference]: Without dead ends: 128 [2025-01-09 22:26:16,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=234, Invalid=1551, Unknown=29, NotChecked=166, Total=1980 [2025-01-09 22:26:16,485 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 144 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 25 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:26:16,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 588 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 796 Invalid, 6 Unknown, 131 Unchecked, 28.3s Time] [2025-01-09 22:26:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-01-09 22:26:16,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 94. [2025-01-09 22:26:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 82 states have internal predecessors, (87), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2025-01-09 22:26:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2025-01-09 22:26:16,487 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 29 [2025-01-09 22:26:16,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:26:16,487 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2025-01-09 22:26:16,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-09 22:26:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2025-01-09 22:26:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-09 22:26:16,488 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:26:16,488 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:26:16,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-01-09 22:26:16,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2025-01-09 22:26:16,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-01-09 22:26:16,888 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2025-01-09 22:26:16,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:26:16,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1269350632, now seen corresponding path program 1 times [2025-01-09 22:26:16,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:26:16,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404113039] [2025-01-09 22:26:16,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:26:16,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:26:16,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:26:16,891 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:26:16,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-09 22:26:16,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 22:26:16,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 22:26:16,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:26:16,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:26:16,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 22:26:16,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:26:21,353 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_25| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_25| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~c11~0#1.base_25|)))) is different from true [2025-01-09 22:26:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 22:26:21,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:26:21,470 INFO L349 Elim1Store]: treesize reduction 86, result has 8.5 percent of original size [2025-01-09 22:26:21,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 80 [2025-01-09 22:26:29,710 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:26:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404113039] [2025-01-09 22:26:29,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404113039] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:26:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1703532251] [2025-01-09 22:26:29,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:26:29,711 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:26:29,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:26:29,712 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:26:29,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2025-01-09 22:26:29,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 22:26:29,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 22:26:29,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:26:29,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:26:29,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 22:26:29,830 INFO L279 TraceCheckSpWp]: Computing forward predicates...