./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:19:19,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:19:19,737 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:19:19,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:19:19,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:19:19,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:19:19,758 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:19:19,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:19:19,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:19:19,759 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:19:19,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:19:19,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:19:19,759 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:19:19,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:19:19,760 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:19:19,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:19:19,760 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:19:19,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:19:19,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:19:19,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:19:19,760 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:19:19,760 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:19:19,760 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:19:19,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:19:19,760 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:19:19,761 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:19:19,761 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:19:19,761 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:19:19,761 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:19:19,761 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:19:19,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:19:19,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:19:19,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:19:19,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:19:19,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:19:19,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:19:19,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:19:19,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:19:19,762 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:19:19,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:19:19,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:19:19,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:19:19,762 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 -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2025-02-06 12:19:20,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:19:20,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:19:20,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:19:20,021 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:19:20,021 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:19:20,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2025-02-06 12:19:21,221 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2b295bb9a/667da9c016f048a098d6687504cdc3c9/FLAG59c3a4ad9 [2025-02-06 12:19:21,608 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:19:21,608 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2025-02-06 12:19:21,633 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2b295bb9a/667da9c016f048a098d6687504cdc3c9/FLAG59c3a4ad9 [2025-02-06 12:19:21,649 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2b295bb9a/667da9c016f048a098d6687504cdc3c9 [2025-02-06 12:19:21,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:19:21,652 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:19:21,654 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:19:21,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:19:21,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:19:21,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:19:21" (1/1) ... [2025-02-06 12:19:21,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b040111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:21, skipping insertion in model container [2025-02-06 12:19:21,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:19:21" (1/1) ... [2025-02-06 12:19:21,709 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:19:22,148 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,166 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,169 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,171 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,178 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,201 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,202 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,203 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,203 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,207 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,208 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,209 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,209 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,211 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,216 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:22,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:19:22,234 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-06 12:19:22,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75509232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:22, skipping insertion in model container [2025-02-06 12:19:22,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:19:22,236 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:19:22,237 INFO L158 Benchmark]: Toolchain (without parser) took 584.27ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 71.3MB in the end (delta: 31.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-06 12:19:22,237 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:19:22,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 581.66ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 71.3MB in the end (delta: 31.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-06 12:19:22,238 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 581.66ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 71.3MB in the end (delta: 31.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2239]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:19:23,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:19:23,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:19:23,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:19:23,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:19:23,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:19:23,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:19:24,000 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:19:24,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:19:24,000 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:19:24,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:19:24,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:19:24,001 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:19:24,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:19:24,002 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:19:24,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:19:24,002 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:19:24,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:19:24,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:19:24,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:19:24,002 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:19:24,003 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:19:24,003 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:19:24,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:19:24,003 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:19:24,003 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:19:24,003 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:19:24,003 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:19:24,003 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:19:24,003 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:19:24,003 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:19:24,004 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:19:24,004 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:19:24,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:19:24,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:19:24,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:19:24,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:19:24,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:19:24,004 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:19:24,004 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:19:24,004 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:19:24,004 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:19:24,005 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:19:24,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:19:24,005 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2025-02-06 12:19:24,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:19:24,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:19:24,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:19:24,262 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:19:24,264 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:19:24,265 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2025-02-06 12:19:25,435 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a2d41a209/de0391599e68472592ac6408e9d5e2ad/FLAG747a0c17b [2025-02-06 12:19:25,766 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:19:25,768 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2025-02-06 12:19:25,788 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a2d41a209/de0391599e68472592ac6408e9d5e2ad/FLAG747a0c17b [2025-02-06 12:19:26,005 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a2d41a209/de0391599e68472592ac6408e9d5e2ad [2025-02-06 12:19:26,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:19:26,008 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:19:26,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:19:26,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:19:26,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:19:26,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:26,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429ad939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26, skipping insertion in model container [2025-02-06 12:19:26,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:26,054 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:19:26,424 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,442 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,445 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,449 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,457 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,477 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,478 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,479 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,480 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,481 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,482 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,483 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,486 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,486 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,489 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:19:26,506 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:19:26,517 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:19:26,582 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,596 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,597 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,599 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,602 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,627 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,627 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,628 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,629 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,630 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,631 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,632 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,633 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,634 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,636 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:19:26,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:19:26,644 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:19:26,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:19:26,746 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:19:26,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26 WrapperNode [2025-02-06 12:19:26,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:19:26,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:19:26,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:19:26,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:19:26,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:26,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:26,867 INFO L138 Inliner]: procedures = 180, calls = 775, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3017 [2025-02-06 12:19:26,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:19:26,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:19:26,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:19:26,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:19:26,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:26,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:26,885 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:26,973 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 34, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-02-06 12:19:26,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:26,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:27,004 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:27,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:27,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:27,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:27,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:19:27,044 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:19:27,044 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:19:27,044 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:19:27,045 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (1/1) ... [2025-02-06 12:19:27,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:19:27,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:19:27,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:19:27,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:19:27,094 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-02-06 12:19:27,094 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-02-06 12:19:27,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:19:27,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:19:27,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-06 12:19:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:19:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:19:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-06 12:19:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 12:19:27,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 12:19:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:19:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:19:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 12:19:27,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:19:27,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:19:27,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 12:19:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:19:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:19:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:19:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:19:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 12:19:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 12:19:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:19:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:19:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 12:19:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:19:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:19:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:19:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-06 12:19:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:19:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:19:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-06 12:19:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:19:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:19:27,282 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:19:27,283 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:19:31,021 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2218: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-06 12:19:31,229 INFO L? ?]: Removed 1595 outVars from TransFormulas that were not future-live. [2025-02-06 12:19:31,229 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:19:31,271 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:19:31,271 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:19:31,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:19:31 BoogieIcfgContainer [2025-02-06 12:19:31,272 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:19:31,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:19:31,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:19:31,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:19:31,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:19:26" (1/3) ... [2025-02-06 12:19:31,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681a685a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:19:31, skipping insertion in model container [2025-02-06 12:19:31,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:19:26" (2/3) ... [2025-02-06 12:19:31,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681a685a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:19:31, skipping insertion in model container [2025-02-06 12:19:31,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:19:31" (3/3) ... [2025-02-06 12:19:31,278 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-2.i [2025-02-06 12:19:31,288 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:19:31,290 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test9-2.i that has 6 procedures, 2093 locations, 1 initial locations, 38 loop locations, and 529 error locations. [2025-02-06 12:19:31,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:19:31,363 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;@4514b8dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:19:31,364 INFO L334 AbstractCegarLoop]: Starting to check reachability of 529 error locations. [2025-02-06 12:19:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 2083 states, 1048 states have (on average 2.094465648854962) internal successors, (2195), 2076 states have internal predecessors, (2195), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2025-02-06 12:19:31,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-06 12:19:31,378 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:19:31,379 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-06 12:19:31,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:19:31,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:19:31,384 INFO L85 PathProgramCache]: Analyzing trace with hash 4205322, now seen corresponding path program 1 times [2025-02-06 12:19:31,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:19:31,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242211603] [2025-02-06 12:19:31,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:19:31,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:31,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:19:31,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:19:31,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 12:19:31,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:19:31,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:19:31,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:19:31,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:19:31,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:19:31,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:19:31,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:19:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:19:31,571 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:19:31,571 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:19:31,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242211603] [2025-02-06 12:19:31,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242211603] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:19:31,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:19:31,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:19:31,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860842561] [2025-02-06 12:19:31,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:19:31,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:19:31,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:19:31,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:19:31,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:19:31,600 INFO L87 Difference]: Start difference. First operand has 2083 states, 1048 states have (on average 2.094465648854962) internal successors, (2195), 2076 states have internal predecessors, (2195), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:33,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:19:33,577 INFO L93 Difference]: Finished difference Result 2250 states and 3317 transitions. [2025-02-06 12:19:33,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:19:33,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-06 12:19:33,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:19:33,599 INFO L225 Difference]: With dead ends: 2250 [2025-02-06 12:19:33,599 INFO L226 Difference]: Without dead ends: 2248 [2025-02-06 12:19:33,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:19:33,602 INFO L435 NwaCegarLoop]: 2650 mSDtfsCounter, 1984 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-06 12:19:33,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 2807 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-06 12:19:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2025-02-06 12:19:33,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2067. [2025-02-06 12:19:33,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 1050 states have (on average 2.0161904761904763) internal successors, (2117), 2060 states have internal predecessors, (2117), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-06 12:19:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3125 transitions. [2025-02-06 12:19:33,850 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3125 transitions. Word has length 3 [2025-02-06 12:19:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:19:33,850 INFO L471 AbstractCegarLoop]: Abstraction has 2067 states and 3125 transitions. [2025-02-06 12:19:33,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:33,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3125 transitions. [2025-02-06 12:19:33,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-06 12:19:33,851 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:19:33,851 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-06 12:19:33,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 12:19:34,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:34,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr527REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:19:34,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:19:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash 4205323, now seen corresponding path program 1 times [2025-02-06 12:19:34,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:19:34,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507379020] [2025-02-06 12:19:34,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:19:34,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:34,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:19:34,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:19:34,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 12:19:34,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:19:34,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:19:34,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:19:34,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:19:34,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:19:34,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:19:34,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:19:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:19:34,154 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:19:34,154 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:19:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507379020] [2025-02-06 12:19:34,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507379020] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:19:34,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:19:34,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:19:34,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152865385] [2025-02-06 12:19:34,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:19:34,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:19:34,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:19:34,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:19:34,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:19:34,155 INFO L87 Difference]: Start difference. First operand 2067 states and 3125 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:19:36,576 INFO L93 Difference]: Finished difference Result 3490 states and 5581 transitions. [2025-02-06 12:19:36,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:19:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-06 12:19:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:19:36,589 INFO L225 Difference]: With dead ends: 3490 [2025-02-06 12:19:36,589 INFO L226 Difference]: Without dead ends: 3490 [2025-02-06 12:19:36,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:19:36,590 INFO L435 NwaCegarLoop]: 3030 mSDtfsCounter, 1455 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 5127 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:19:36,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1955 Valid, 5127 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-06 12:19:36,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2025-02-06 12:19:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 3200. [2025-02-06 12:19:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 1684 states have (on average 1.994061757719715) internal successors, (3358), 3193 states have internal predecessors, (3358), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:19:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5366 transitions. [2025-02-06 12:19:36,789 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5366 transitions. Word has length 3 [2025-02-06 12:19:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:19:36,789 INFO L471 AbstractCegarLoop]: Abstraction has 3200 states and 5366 transitions. [2025-02-06 12:19:36,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5366 transitions. [2025-02-06 12:19:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 12:19:36,790 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:19:36,790 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:19:36,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 12:19:36,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:36,991 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:19:36,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:19:36,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2041263077, now seen corresponding path program 1 times [2025-02-06 12:19:36,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:19:36,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644765280] [2025-02-06 12:19:36,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:19:36,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:36,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:19:36,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:19:36,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 12:19:37,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:19:37,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:19:37,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:19:37,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:19:37,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:19:37,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:19:37,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:19:37,152 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-02-06 12:19:37,153 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 12 treesize of output 18 [2025-02-06 12:19:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:19:37,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:19:37,224 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:19:37,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644765280] [2025-02-06 12:19:37,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644765280] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:19:37,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:19:37,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:19:37,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985830824] [2025-02-06 12:19:37,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:19:37,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:19:37,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:19:37,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:19:37,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:19:37,226 INFO L87 Difference]: Start difference. First operand 3200 states and 5366 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:44,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:19:44,973 INFO L93 Difference]: Finished difference Result 5202 states and 8342 transitions. [2025-02-06 12:19:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:19:44,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-06 12:19:44,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:19:44,995 INFO L225 Difference]: With dead ends: 5202 [2025-02-06 12:19:44,995 INFO L226 Difference]: Without dead ends: 5202 [2025-02-06 12:19:44,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:19:44,997 INFO L435 NwaCegarLoop]: 5050 mSDtfsCounter, 3207 mSDsluCounter, 3194 mSDsCounter, 0 mSdLazyCounter, 4561 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 8244 SdHoareTripleChecker+Invalid, 4572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:19:44,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4207 Valid, 8244 Invalid, 4572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 4561 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2025-02-06 12:19:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5202 states. [2025-02-06 12:19:45,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5202 to 3351. [2025-02-06 12:19:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3351 states, 1835 states have (on average 1.9874659400544958) internal successors, (3647), 3344 states have internal predecessors, (3647), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:19:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 5655 transitions. [2025-02-06 12:19:45,239 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 5655 transitions. Word has length 8 [2025-02-06 12:19:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:19:45,239 INFO L471 AbstractCegarLoop]: Abstraction has 3351 states and 5655 transitions. [2025-02-06 12:19:45,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 5655 transitions. [2025-02-06 12:19:45,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:19:45,240 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:19:45,240 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:19:45,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 12:19:45,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:45,441 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:19:45,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:19:45,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1145358176, now seen corresponding path program 1 times [2025-02-06 12:19:45,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:19:45,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752770891] [2025-02-06 12:19:45,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:19:45,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:45,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:19:45,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:19:45,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 12:19:45,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:19:45,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:19:45,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:19:45,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:19:45,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:19:45,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:19:45,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:19:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:19:45,571 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:19:45,571 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:19:45,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752770891] [2025-02-06 12:19:45,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752770891] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:19:45,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:19:45,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:19:45,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737696009] [2025-02-06 12:19:45,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:19:45,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:19:45,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:19:45,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:19:45,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:19:45,572 INFO L87 Difference]: Start difference. First operand 3351 states and 5655 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:47,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:19:47,150 INFO L93 Difference]: Finished difference Result 4526 states and 7841 transitions. [2025-02-06 12:19:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:19:47,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-06 12:19:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:19:47,166 INFO L225 Difference]: With dead ends: 4526 [2025-02-06 12:19:47,166 INFO L226 Difference]: Without dead ends: 4526 [2025-02-06 12:19:47,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:19:47,167 INFO L435 NwaCegarLoop]: 4793 mSDtfsCounter, 1774 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 7060 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:19:47,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2277 Valid, 7060 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 12:19:47,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4526 states. [2025-02-06 12:19:47,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4526 to 3304. [2025-02-06 12:19:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3304 states, 1835 states have (on average 1.955858310626703) internal successors, (3589), 3297 states have internal predecessors, (3589), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:19:47,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 5597 transitions. [2025-02-06 12:19:47,382 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 5597 transitions. Word has length 9 [2025-02-06 12:19:47,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:19:47,383 INFO L471 AbstractCegarLoop]: Abstraction has 3304 states and 5597 transitions. [2025-02-06 12:19:47,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:47,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 5597 transitions. [2025-02-06 12:19:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:19:47,383 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:19:47,383 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:19:47,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 12:19:47,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:47,584 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:19:47,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:19:47,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1145358177, now seen corresponding path program 1 times [2025-02-06 12:19:47,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:19:47,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363560576] [2025-02-06 12:19:47,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:19:47,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:47,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:19:47,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:19:47,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 12:19:47,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:19:47,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:19:47,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:19:47,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:19:47,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:19:47,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:19:47,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:19:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:19:47,695 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:19:47,695 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:19:47,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363560576] [2025-02-06 12:19:47,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363560576] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:19:47,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:19:47,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:19:47,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712523254] [2025-02-06 12:19:47,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:19:47,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:19:47,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:19:47,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:19:47,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:19:47,696 INFO L87 Difference]: Start difference. First operand 3304 states and 5597 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:49,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:19:49,760 INFO L93 Difference]: Finished difference Result 5746 states and 10161 transitions. [2025-02-06 12:19:49,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:19:49,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-06 12:19:49,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:19:49,788 INFO L225 Difference]: With dead ends: 5746 [2025-02-06 12:19:49,788 INFO L226 Difference]: Without dead ends: 5746 [2025-02-06 12:19:49,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:19:49,790 INFO L435 NwaCegarLoop]: 4973 mSDtfsCounter, 1524 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 7411 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:19:49,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 7411 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:19:49,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5746 states. [2025-02-06 12:19:50,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5746 to 3333. [2025-02-06 12:19:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 1874 states have (on average 1.944503735325507) internal successors, (3644), 3326 states have internal predecessors, (3644), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:19:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 5652 transitions. [2025-02-06 12:19:50,118 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 5652 transitions. Word has length 9 [2025-02-06 12:19:50,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:19:50,118 INFO L471 AbstractCegarLoop]: Abstraction has 3333 states and 5652 transitions. [2025-02-06 12:19:50,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:50,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 5652 transitions. [2025-02-06 12:19:50,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 12:19:50,119 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:19:50,119 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:19:50,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 12:19:50,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:50,320 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:19:50,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:19:50,320 INFO L85 PathProgramCache]: Analyzing trace with hash 586422329, now seen corresponding path program 1 times [2025-02-06 12:19:50,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:19:50,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148328274] [2025-02-06 12:19:50,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:19:50,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:50,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:19:50,323 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:19:50,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 12:19:50,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 12:19:50,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 12:19:50,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:19:50,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:19:50,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:19:50,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:19:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:19:50,486 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:19:50,486 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:19:50,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148328274] [2025-02-06 12:19:50,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148328274] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:19:50,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:19:50,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:19:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350624384] [2025-02-06 12:19:50,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:19:50,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:19:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:19:50,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:19:50,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:19:50,488 INFO L87 Difference]: Start difference. First operand 3333 states and 5652 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:50,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:19:50,672 INFO L93 Difference]: Finished difference Result 4586 states and 7801 transitions. [2025-02-06 12:19:50,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:19:50,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-06 12:19:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:19:50,692 INFO L225 Difference]: With dead ends: 4586 [2025-02-06 12:19:50,692 INFO L226 Difference]: Without dead ends: 4586 [2025-02-06 12:19:50,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:19:50,693 INFO L435 NwaCegarLoop]: 3129 mSDtfsCounter, 1474 mSDsluCounter, 2974 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 6103 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:19:50,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 6103 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:19:50,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2025-02-06 12:19:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4314. [2025-02-06 12:19:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4314 states, 2355 states have (on average 1.9494692144373673) internal successors, (4591), 4307 states have internal predecessors, (4591), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-02-06 12:19:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4314 states to 4314 states and 7599 transitions. [2025-02-06 12:19:50,918 INFO L78 Accepts]: Start accepts. Automaton has 4314 states and 7599 transitions. Word has length 13 [2025-02-06 12:19:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:19:50,918 INFO L471 AbstractCegarLoop]: Abstraction has 4314 states and 7599 transitions. [2025-02-06 12:19:50,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:50,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4314 states and 7599 transitions. [2025-02-06 12:19:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 12:19:50,919 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:19:50,919 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:19:50,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 12:19:51,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:51,119 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr196REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:19:51,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:19:51,120 INFO L85 PathProgramCache]: Analyzing trace with hash -303350477, now seen corresponding path program 1 times [2025-02-06 12:19:51,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:19:51,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683582722] [2025-02-06 12:19:51,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:19:51,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:51,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:19:51,123 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:19:51,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 12:19:51,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:19:51,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:19:51,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:19:51,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:19:51,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:19:51,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:19:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:19:51,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:19:51,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:19:51,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683582722] [2025-02-06 12:19:51,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683582722] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:19:51,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:19:51,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:19:51,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307771061] [2025-02-06 12:19:51,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:19:51,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:19:51,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:19:51,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:19:51,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:19:51,274 INFO L87 Difference]: Start difference. First operand 4314 states and 7599 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:19:54,268 INFO L93 Difference]: Finished difference Result 4484 states and 7732 transitions. [2025-02-06 12:19:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:19:54,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-06 12:19:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:19:54,278 INFO L225 Difference]: With dead ends: 4484 [2025-02-06 12:19:54,278 INFO L226 Difference]: Without dead ends: 4484 [2025-02-06 12:19:54,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:19:54,279 INFO L435 NwaCegarLoop]: 2606 mSDtfsCounter, 1979 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 4266 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:19:54,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 4266 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2557 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-02-06 12:19:54,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2025-02-06 12:19:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 4291. [2025-02-06 12:19:54,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4291 states, 2355 states have (on average 1.9201698513800425) internal successors, (4522), 4284 states have internal predecessors, (4522), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-02-06 12:19:54,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4291 states to 4291 states and 7530 transitions. [2025-02-06 12:19:54,579 INFO L78 Accepts]: Start accepts. Automaton has 4291 states and 7530 transitions. Word has length 15 [2025-02-06 12:19:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:19:54,579 INFO L471 AbstractCegarLoop]: Abstraction has 4291 states and 7530 transitions. [2025-02-06 12:19:54,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4291 states and 7530 transitions. [2025-02-06 12:19:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 12:19:54,580 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:19:54,580 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:19:54,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 12:19:54,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:54,784 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr197REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:19:54,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:19:54,784 INFO L85 PathProgramCache]: Analyzing trace with hash -303350476, now seen corresponding path program 1 times [2025-02-06 12:19:54,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:19:54,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292301892] [2025-02-06 12:19:54,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:19:54,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:54,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:19:54,786 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:19:54,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 12:19:54,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:19:54,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:19:54,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:19:54,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:19:54,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:19:54,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:19:54,889 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 [2025-02-06 12:19:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:19:54,954 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:19:54,954 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:19:54,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292301892] [2025-02-06 12:19:54,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292301892] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:19:54,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:19:54,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:19:54,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140661391] [2025-02-06 12:19:54,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:19:54,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:19:54,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:19:54,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:19:54,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:19:54,955 INFO L87 Difference]: Start difference. First operand 4291 states and 7530 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:58,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:19:58,621 INFO L93 Difference]: Finished difference Result 4488 states and 7702 transitions. [2025-02-06 12:19:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:19:58,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-06 12:19:58,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:19:58,635 INFO L225 Difference]: With dead ends: 4488 [2025-02-06 12:19:58,636 INFO L226 Difference]: Without dead ends: 4488 [2025-02-06 12:19:58,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:19:58,637 INFO L435 NwaCegarLoop]: 2912 mSDtfsCounter, 1341 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:19:58,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1841 Valid, 6466 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2025-02-06 12:19:58,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2025-02-06 12:19:58,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 4272. [2025-02-06 12:19:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 2336 states have (on average 1.917808219178082) internal successors, (4480), 4265 states have internal predecessors, (4480), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-02-06 12:19:58,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 7488 transitions. [2025-02-06 12:19:58,857 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 7488 transitions. Word has length 15 [2025-02-06 12:19:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:19:58,858 INFO L471 AbstractCegarLoop]: Abstraction has 4272 states and 7488 transitions. [2025-02-06 12:19:58,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:19:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 7488 transitions. [2025-02-06 12:19:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 12:19:58,858 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:19:58,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:19:58,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 12:19:59,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:59,059 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:19:59,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:19:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash 911110484, now seen corresponding path program 1 times [2025-02-06 12:19:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:19:59,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587284865] [2025-02-06 12:19:59,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:19:59,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:19:59,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:19:59,062 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:19:59,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 12:19:59,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:19:59,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:19:59,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:19:59,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:19:59,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:19:59,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:19:59,164 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:19:59,164 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:19:59,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2025-02-06 12:19:59,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:19:59,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2025-02-06 12:19:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:19:59,237 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:19:59,237 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:19:59,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587284865] [2025-02-06 12:19:59,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587284865] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:19:59,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:19:59,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:19:59,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128232636] [2025-02-06 12:19:59,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:19:59,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:19:59,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:19:59,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:19:59,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:19:59,238 INFO L87 Difference]: Start difference. First operand 4272 states and 7488 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:00,501 INFO L93 Difference]: Finished difference Result 6040 states and 10251 transitions. [2025-02-06 12:20:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:20:00,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-06 12:20:00,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:00,517 INFO L225 Difference]: With dead ends: 6040 [2025-02-06 12:20:00,517 INFO L226 Difference]: Without dead ends: 6040 [2025-02-06 12:20:00,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:00,518 INFO L435 NwaCegarLoop]: 3490 mSDtfsCounter, 1952 mSDsluCounter, 5968 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 9458 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:00,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2455 Valid, 9458 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-06 12:20:00,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2025-02-06 12:20:00,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 3202. [2025-02-06 12:20:00,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3202 states, 1766 states have (on average 1.920158550396376) internal successors, (3391), 3195 states have internal predecessors, (3391), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:20:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 5399 transitions. [2025-02-06 12:20:00,768 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 5399 transitions. Word has length 15 [2025-02-06 12:20:00,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:00,768 INFO L471 AbstractCegarLoop]: Abstraction has 3202 states and 5399 transitions. [2025-02-06 12:20:00,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:00,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 5399 transitions. [2025-02-06 12:20:00,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 12:20:00,769 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:00,769 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:00,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 12:20:00,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:00,970 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr512REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:20:00,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:00,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2120759341, now seen corresponding path program 1 times [2025-02-06 12:20:00,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:00,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238563681] [2025-02-06 12:20:00,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:00,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:00,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:00,973 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:00,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 12:20:01,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:20:01,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:20:01,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:01,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:01,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:20:01,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:01,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:20:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:01,112 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:01,112 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:01,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238563681] [2025-02-06 12:20:01,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238563681] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:01,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:01,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:20:01,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555186325] [2025-02-06 12:20:01,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:01,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:20:01,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:01,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:20:01,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:01,113 INFO L87 Difference]: Start difference. First operand 3202 states and 5399 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:03,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:03,612 INFO L93 Difference]: Finished difference Result 3187 states and 5361 transitions. [2025-02-06 12:20:03,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:20:03,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-06 12:20:03,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:03,617 INFO L225 Difference]: With dead ends: 3187 [2025-02-06 12:20:03,617 INFO L226 Difference]: Without dead ends: 3187 [2025-02-06 12:20:03,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:03,618 INFO L435 NwaCegarLoop]: 2641 mSDtfsCounter, 1797 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 4231 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:03,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2300 Valid, 4231 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-06 12:20:03,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2025-02-06 12:20:03,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3179. [2025-02-06 12:20:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 1766 states have (on average 1.8941109852774631) internal successors, (3345), 3172 states have internal predecessors, (3345), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:20:03,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5353 transitions. [2025-02-06 12:20:03,735 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5353 transitions. Word has length 19 [2025-02-06 12:20:03,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:03,736 INFO L471 AbstractCegarLoop]: Abstraction has 3179 states and 5353 transitions. [2025-02-06 12:20:03,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5353 transitions. [2025-02-06 12:20:03,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 12:20:03,737 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:03,737 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:03,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 12:20:03,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:03,938 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:20:03,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:03,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2120759340, now seen corresponding path program 1 times [2025-02-06 12:20:03,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:03,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007453127] [2025-02-06 12:20:03,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:03,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:03,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:03,941 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:03,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 12:20:04,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:20:04,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:20:04,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:04,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:04,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:20:04,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:04,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:20:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:04,132 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:04,133 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:04,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007453127] [2025-02-06 12:20:04,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007453127] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:04,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:04,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:20:04,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348008436] [2025-02-06 12:20:04,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:04,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:20:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:04,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:20:04,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:04,134 INFO L87 Difference]: Start difference. First operand 3179 states and 5353 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:08,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:08,149 INFO L93 Difference]: Finished difference Result 5654 states and 9884 transitions. [2025-02-06 12:20:08,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:20:08,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-06 12:20:08,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:08,161 INFO L225 Difference]: With dead ends: 5654 [2025-02-06 12:20:08,161 INFO L226 Difference]: Without dead ends: 5654 [2025-02-06 12:20:08,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:08,162 INFO L435 NwaCegarLoop]: 5012 mSDtfsCounter, 1620 mSDsluCounter, 6005 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2120 SdHoareTripleChecker+Valid, 11017 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:08,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2120 Valid, 11017 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2816 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-02-06 12:20:08,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2025-02-06 12:20:08,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 3293. [2025-02-06 12:20:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 1880 states have (on average 1.8526595744680852) internal successors, (3483), 3286 states have internal predecessors, (3483), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:20:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 5491 transitions. [2025-02-06 12:20:08,421 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 5491 transitions. Word has length 19 [2025-02-06 12:20:08,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:08,421 INFO L471 AbstractCegarLoop]: Abstraction has 3293 states and 5491 transitions. [2025-02-06 12:20:08,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 5491 transitions. [2025-02-06 12:20:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-06 12:20:08,422 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:08,422 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:08,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 12:20:08,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:08,623 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:20:08,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:08,624 INFO L85 PathProgramCache]: Analyzing trace with hash -578254023, now seen corresponding path program 1 times [2025-02-06 12:20:08,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:08,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245675912] [2025-02-06 12:20:08,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:08,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:08,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:08,626 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:08,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 12:20:08,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 12:20:08,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 12:20:08,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:08,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:08,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:20:08,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:08,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:20:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:08,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:20:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:09,244 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:09,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245675912] [2025-02-06 12:20:09,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245675912] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:20:09,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:20:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:20:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717839826] [2025-02-06 12:20:09,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:20:09,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:20:09,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:09,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:20:09,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:20:09,246 INFO L87 Difference]: Start difference. First operand 3293 states and 5491 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:21,059 INFO L93 Difference]: Finished difference Result 6010 states and 10374 transitions. [2025-02-06 12:20:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:20:21,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-02-06 12:20:21,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:21,071 INFO L225 Difference]: With dead ends: 6010 [2025-02-06 12:20:21,071 INFO L226 Difference]: Without dead ends: 6010 [2025-02-06 12:20:21,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:20:21,072 INFO L435 NwaCegarLoop]: 5020 mSDtfsCounter, 4105 mSDsluCounter, 9653 mSDsCounter, 0 mSdLazyCounter, 4563 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4606 SdHoareTripleChecker+Valid, 14673 SdHoareTripleChecker+Invalid, 5090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 4563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:21,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4606 Valid, 14673 Invalid, 5090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 4563 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2025-02-06 12:20:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6010 states. [2025-02-06 12:20:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6010 to 3457. [2025-02-06 12:20:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 2044 states have (on average 1.8175146771037183) internal successors, (3715), 3450 states have internal predecessors, (3715), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:20:21,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 5723 transitions. [2025-02-06 12:20:21,326 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 5723 transitions. Word has length 38 [2025-02-06 12:20:21,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:21,327 INFO L471 AbstractCegarLoop]: Abstraction has 3457 states and 5723 transitions. [2025-02-06 12:20:21,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:21,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 5723 transitions. [2025-02-06 12:20:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-06 12:20:21,330 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:21,330 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:21,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 12:20:21,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:21,531 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:20:21,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:21,532 INFO L85 PathProgramCache]: Analyzing trace with hash -677618060, now seen corresponding path program 1 times [2025-02-06 12:20:21,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:21,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137715248] [2025-02-06 12:20:21,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:21,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:21,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:21,539 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:21,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 12:20:21,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 12:20:21,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 12:20:21,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:21,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:21,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:20:21,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:21,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:21,737 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:21,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137715248] [2025-02-06 12:20:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137715248] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:21,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:21,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:20:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414042709] [2025-02-06 12:20:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:21,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:20:21,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:21,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:20:21,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:21,737 INFO L87 Difference]: Start difference. First operand 3457 states and 5723 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:21,812 INFO L93 Difference]: Finished difference Result 3146 states and 5287 transitions. [2025-02-06 12:20:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:20:21,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2025-02-06 12:20:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:21,818 INFO L225 Difference]: With dead ends: 3146 [2025-02-06 12:20:21,818 INFO L226 Difference]: Without dead ends: 3146 [2025-02-06 12:20:21,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:21,819 INFO L435 NwaCegarLoop]: 2951 mSDtfsCounter, 56 mSDsluCounter, 5829 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8780 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:21,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 8780 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:20:21,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2025-02-06 12:20:21,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3144. [2025-02-06 12:20:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3144 states, 1754 states have (on average 1.8683010262257698) internal successors, (3277), 3137 states have internal predecessors, (3277), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:20:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 5285 transitions. [2025-02-06 12:20:21,944 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 5285 transitions. Word has length 54 [2025-02-06 12:20:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:21,944 INFO L471 AbstractCegarLoop]: Abstraction has 3144 states and 5285 transitions. [2025-02-06 12:20:21,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:21,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 5285 transitions. [2025-02-06 12:20:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-06 12:20:21,946 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:21,946 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:21,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 12:20:22,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:22,147 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:20:22,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash 438884284, now seen corresponding path program 1 times [2025-02-06 12:20:22,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:22,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863073942] [2025-02-06 12:20:22,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:22,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:22,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:22,150 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:22,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 12:20:22,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-06 12:20:22,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-06 12:20:22,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:22,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:22,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:20:22,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:22,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:20:22,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:20:22,693 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 [2025-02-06 12:20:22,704 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:20:22,705 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 [2025-02-06 12:20:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:22,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:22,711 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:22,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863073942] [2025-02-06 12:20:22,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863073942] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:22,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:22,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:20:22,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339891136] [2025-02-06 12:20:22,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:22,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:20:22,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:22,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:20:22,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:22,714 INFO L87 Difference]: Start difference. First operand 3144 states and 5285 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:26,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:26,331 INFO L93 Difference]: Finished difference Result 3106 states and 5247 transitions. [2025-02-06 12:20:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:20:26,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-02-06 12:20:26,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:26,337 INFO L225 Difference]: With dead ends: 3106 [2025-02-06 12:20:26,337 INFO L226 Difference]: Without dead ends: 3106 [2025-02-06 12:20:26,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:20:26,337 INFO L435 NwaCegarLoop]: 2491 mSDtfsCounter, 1691 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 3275 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 4012 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:26,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 4012 Invalid, 3317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3275 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-02-06 12:20:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2025-02-06 12:20:26,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 3067. [2025-02-06 12:20:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 1715 states have (on average 1.8443148688046647) internal successors, (3163), 3060 states have internal predecessors, (3163), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:20:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 5171 transitions. [2025-02-06 12:20:26,464 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 5171 transitions. Word has length 62 [2025-02-06 12:20:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:26,465 INFO L471 AbstractCegarLoop]: Abstraction has 3067 states and 5171 transitions. [2025-02-06 12:20:26,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 5171 transitions. [2025-02-06 12:20:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 12:20:26,465 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:26,466 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:26,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 12:20:26,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:26,666 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr424REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:20:26,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash -7020482, now seen corresponding path program 1 times [2025-02-06 12:20:26,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:26,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661090956] [2025-02-06 12:20:26,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:26,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:26,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:26,670 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:26,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 12:20:26,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:20:26,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:20:26,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:26,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:26,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:20:26,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:26,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:20:26,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:20:26,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 12:20:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:26,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:26,871 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:26,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661090956] [2025-02-06 12:20:26,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661090956] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:26,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:26,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:20:26,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393683120] [2025-02-06 12:20:26,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:26,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:20:26,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:26,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:20:26,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:26,872 INFO L87 Difference]: Start difference. First operand 3067 states and 5171 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:28,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:28,208 INFO L93 Difference]: Finished difference Result 3066 states and 5170 transitions. [2025-02-06 12:20:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:20:28,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-06 12:20:28,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:28,212 INFO L225 Difference]: With dead ends: 3066 [2025-02-06 12:20:28,212 INFO L226 Difference]: Without dead ends: 3066 [2025-02-06 12:20:28,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:20:28,213 INFO L435 NwaCegarLoop]: 2923 mSDtfsCounter, 2 mSDsluCounter, 7536 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10459 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:28,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10459 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 12:20:28,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2025-02-06 12:20:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 3066. [2025-02-06 12:20:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 1715 states have (on average 1.843731778425656) internal successors, (3162), 3059 states have internal predecessors, (3162), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:20:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 5170 transitions. [2025-02-06 12:20:28,340 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 5170 transitions. Word has length 67 [2025-02-06 12:20:28,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:28,341 INFO L471 AbstractCegarLoop]: Abstraction has 3066 states and 5170 transitions. [2025-02-06 12:20:28,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:28,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 5170 transitions. [2025-02-06 12:20:28,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 12:20:28,343 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:28,343 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:28,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 12:20:28,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:28,544 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr425REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:20:28,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:28,544 INFO L85 PathProgramCache]: Analyzing trace with hash -7020481, now seen corresponding path program 1 times [2025-02-06 12:20:28,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:28,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752683594] [2025-02-06 12:20:28,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:28,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:28,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:28,547 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:28,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 12:20:28,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:20:28,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:20:28,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:28,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:28,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 12:20:28,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:28,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:20:28,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 12:20:28,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:20:28,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-06 12:20:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:28,793 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:28,794 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:28,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752683594] [2025-02-06 12:20:28,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752683594] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:28,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:28,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:20:28,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832958863] [2025-02-06 12:20:28,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:28,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:20:28,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:28,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:20:28,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:28,795 INFO L87 Difference]: Start difference. First operand 3066 states and 5170 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:30,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:30,560 INFO L93 Difference]: Finished difference Result 3065 states and 5169 transitions. [2025-02-06 12:20:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:20:30,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-06 12:20:30,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:30,565 INFO L225 Difference]: With dead ends: 3065 [2025-02-06 12:20:30,566 INFO L226 Difference]: Without dead ends: 3065 [2025-02-06 12:20:30,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:20:30,566 INFO L435 NwaCegarLoop]: 2923 mSDtfsCounter, 1 mSDsluCounter, 7466 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10389 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:30,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10389 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 12:20:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2025-02-06 12:20:30,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 3065. [2025-02-06 12:20:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3065 states, 1714 states have (on average 1.8442240373395566) internal successors, (3161), 3058 states have internal predecessors, (3161), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 12:20:30,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 5169 transitions. [2025-02-06 12:20:30,717 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 5169 transitions. Word has length 67 [2025-02-06 12:20:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:30,717 INFO L471 AbstractCegarLoop]: Abstraction has 3065 states and 5169 transitions. [2025-02-06 12:20:30,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:30,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 5169 transitions. [2025-02-06 12:20:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 12:20:30,718 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:30,718 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:30,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-06 12:20:30,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:30,919 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:20:30,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash -31161221, now seen corresponding path program 1 times [2025-02-06 12:20:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:30,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707169897] [2025-02-06 12:20:30,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:30,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:30,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:30,923 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:30,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 12:20:31,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 12:20:31,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 12:20:31,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:31,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:31,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:20:31,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:31,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:20:31,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 12:20:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:31,168 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:31,168 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:31,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707169897] [2025-02-06 12:20:31,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707169897] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:31,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:31,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:20:31,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023093970] [2025-02-06 12:20:31,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:31,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:20:31,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:31,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:20:31,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:20:31,170 INFO L87 Difference]: Start difference. First operand 3065 states and 5169 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:20:35,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:35,697 INFO L93 Difference]: Finished difference Result 3077 states and 5184 transitions. [2025-02-06 12:20:35,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:20:35,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-06 12:20:35,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:35,706 INFO L225 Difference]: With dead ends: 3077 [2025-02-06 12:20:35,706 INFO L226 Difference]: Without dead ends: 3077 [2025-02-06 12:20:35,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 12:20:35,706 INFO L435 NwaCegarLoop]: 2908 mSDtfsCounter, 13 mSDsluCounter, 8002 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 10910 SdHoareTripleChecker+Invalid, 4222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:35,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 10910 Invalid, 4222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-02-06 12:20:35,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2025-02-06 12:20:35,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 3071. [2025-02-06 12:20:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 1719 states have (on average 1.8429319371727748) internal successors, (3168), 3063 states have internal predecessors, (3168), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1006), 6 states have call predecessors, (1006), 1003 states have call successors, (1006) [2025-02-06 12:20:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 5179 transitions. [2025-02-06 12:20:35,858 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 5179 transitions. Word has length 75 [2025-02-06 12:20:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:35,858 INFO L471 AbstractCegarLoop]: Abstraction has 3071 states and 5179 transitions. [2025-02-06 12:20:35,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:20:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 5179 transitions. [2025-02-06 12:20:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 12:20:35,859 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:35,859 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:35,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 12:20:36,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:36,059 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:20:36,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:36,061 INFO L85 PathProgramCache]: Analyzing trace with hash -31161220, now seen corresponding path program 1 times [2025-02-06 12:20:36,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:36,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923430686] [2025-02-06 12:20:36,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:36,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:36,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:36,063 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:36,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 12:20:36,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 12:20:36,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 12:20:36,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:36,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:36,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:20:36,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:36,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:36,265 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:36,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923430686] [2025-02-06 12:20:36,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923430686] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:36,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:36,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:20:36,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346420245] [2025-02-06 12:20:36,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:36,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:20:36,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:36,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:20:36,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:36,266 INFO L87 Difference]: Start difference. First operand 3071 states and 5179 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:20:36,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:36,312 INFO L93 Difference]: Finished difference Result 3068 states and 5173 transitions. [2025-02-06 12:20:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:20:36,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-06 12:20:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:36,323 INFO L225 Difference]: With dead ends: 3068 [2025-02-06 12:20:36,324 INFO L226 Difference]: Without dead ends: 3068 [2025-02-06 12:20:36,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:36,324 INFO L435 NwaCegarLoop]: 2923 mSDtfsCounter, 0 mSDsluCounter, 5841 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8764 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:36,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8764 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:20:36,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2025-02-06 12:20:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2025-02-06 12:20:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 1716 states have (on average 1.843822843822844) internal successors, (3164), 3061 states have internal predecessors, (3164), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2025-02-06 12:20:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 5173 transitions. [2025-02-06 12:20:36,469 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 5173 transitions. Word has length 75 [2025-02-06 12:20:36,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:36,469 INFO L471 AbstractCegarLoop]: Abstraction has 3068 states and 5173 transitions. [2025-02-06 12:20:36,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:20:36,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 5173 transitions. [2025-02-06 12:20:36,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-06 12:20:36,470 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:36,470 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:36,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 12:20:36,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:36,671 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:20:36,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:36,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1885988496, now seen corresponding path program 1 times [2025-02-06 12:20:36,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:36,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268080730] [2025-02-06 12:20:36,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:36,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:36,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:36,673 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:36,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 12:20:36,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-06 12:20:36,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-06 12:20:36,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:36,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:36,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:20:36,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:36,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:20:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:36,935 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:36,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268080730] [2025-02-06 12:20:36,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268080730] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:20:36,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:20:36,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 12:20:36,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804501065] [2025-02-06 12:20:36,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:20:36,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:20:36,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:36,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:20:36,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:20:36,936 INFO L87 Difference]: Start difference. First operand 3068 states and 5173 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:20:37,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:37,057 INFO L93 Difference]: Finished difference Result 3080 states and 5190 transitions. [2025-02-06 12:20:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:20:37,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2025-02-06 12:20:37,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:37,069 INFO L225 Difference]: With dead ends: 3080 [2025-02-06 12:20:37,069 INFO L226 Difference]: Without dead ends: 3080 [2025-02-06 12:20:37,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-06 12:20:37,070 INFO L435 NwaCegarLoop]: 2923 mSDtfsCounter, 5 mSDsluCounter, 14596 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 17519 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:37,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 17519 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:20:37,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2025-02-06 12:20:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 3078. [2025-02-06 12:20:37,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 1725 states have (on average 1.8428985507246376) internal successors, (3179), 3070 states have internal predecessors, (3179), 1005 states have call successors, (1005), 4 states have call predecessors, (1005), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2025-02-06 12:20:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 5188 transitions. [2025-02-06 12:20:37,246 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 5188 transitions. Word has length 76 [2025-02-06 12:20:37,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:37,246 INFO L471 AbstractCegarLoop]: Abstraction has 3078 states and 5188 transitions. [2025-02-06 12:20:37,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:20:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 5188 transitions. [2025-02-06 12:20:37,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-06 12:20:37,247 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:37,247 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:37,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 12:20:37,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:37,447 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-02-06 12:20:37,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:37,448 INFO L85 PathProgramCache]: Analyzing trace with hash 360112571, now seen corresponding path program 2 times [2025-02-06 12:20:37,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:37,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967988565] [2025-02-06 12:20:37,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:20:37,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:37,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:37,450 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:37,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 12:20:37,586 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes.