./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d 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_test1-2.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 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:54:22,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:54:22,419 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 07:54:22,426 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:54:22,426 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:54:22,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:54:22,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:54:22,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:54:22,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:54:22,446 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:54:22,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:54:22,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:54:22,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:54:22,448 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:54:22,448 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:54:22,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:54:22,448 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:54:22,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:54:22,449 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:54:22,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:54:22,449 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:54:22,449 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:54:22,449 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:54:22,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:54:22,449 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:54:22,449 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:54:22,449 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:54:22,449 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:54:22,449 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:54:22,449 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:54:22,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:54:22,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:54:22,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:54:22,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:54:22,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:54:22,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:54:22,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 07:54:22,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 07:54:22,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:54:22,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:54:22,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:54:22,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:54:22,450 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 -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2025-02-08 07:54:22,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:54:22,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:54:22,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:54:22,673 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:54:22,673 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:54:22,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-02-08 07:54:23,772 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cf00b8bb8/5f61b94c26fc460b8017a2673de5046b/FLAG7500393a3 [2025-02-08 07:54:24,033 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:54:24,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-02-08 07:54:24,051 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cf00b8bb8/5f61b94c26fc460b8017a2673de5046b/FLAG7500393a3 [2025-02-08 07:54:24,065 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cf00b8bb8/5f61b94c26fc460b8017a2673de5046b [2025-02-08 07:54:24,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:54:24,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:54:24,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:24,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:54:24,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:54:24,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:24" (1/1) ... [2025-02-08 07:54:24,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d563278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:24, skipping insertion in model container [2025-02-08 07:54:24,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:24" (1/1) ... [2025-02-08 07:54:24,108 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:54:24,383 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,411 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,416 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,420 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,428 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,435 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,436 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,438 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,439 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,439 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,440 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,443 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:24,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:24,459 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) [2025-02-08 07:54:24,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@576f502c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:24, skipping insertion in model container [2025-02-08 07:54:24,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:24,460 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-08 07:54:24,462 INFO L158 Benchmark]: Toolchain (without parser) took 393.90ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 112.9MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 07:54:24,463 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 201.3MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 07:54:24,463 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.89ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 112.9MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 07:54:24,464 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 201.3MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.89ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 112.9MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 764]: 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_test1-2.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 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:54:26,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:54:26,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 07:54:26,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:54:26,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:54:26,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:54:26,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:54:26,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:54:26,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:54:26,257 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:54:26,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:54:26,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:54:26,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:54:26,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:54:26,259 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:54:26,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:54:26,259 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:54:26,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:54:26,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:54:26,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:54:26,259 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:54:26,260 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:54:26,260 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:54:26,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:54:26,260 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:54:26,260 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 07:54:26,260 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 07:54:26,260 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:54:26,260 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:54:26,260 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:54:26,261 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:54:26,261 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:54:26,261 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:54:26,261 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:54:26,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:54:26,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:54:26,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:54:26,261 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:54:26,261 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 07:54:26,262 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 07:54:26,262 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:54:26,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:54:26,262 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:54:26,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:54:26,262 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 -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2025-02-08 07:54:26,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:54:26,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:54:26,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:54:26,520 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:54:26,520 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:54:26,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-02-08 07:54:27,688 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/da83cc4cf/c53e57baa8ad4096a2e730c7679c2437/FLAG7d2db2d78 [2025-02-08 07:54:27,951 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:54:27,952 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-02-08 07:54:27,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/da83cc4cf/c53e57baa8ad4096a2e730c7679c2437/FLAG7d2db2d78 [2025-02-08 07:54:28,262 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/da83cc4cf/c53e57baa8ad4096a2e730c7679c2437 [2025-02-08 07:54:28,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:54:28,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:54:28,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:28,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:54:28,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:54:28,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:28,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d93b785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28, skipping insertion in model container [2025-02-08 07:54:28,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:28,312 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:54:28,587 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,616 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,619 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,622 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,628 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,638 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,640 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,642 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,643 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,644 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,645 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,648 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:28,662 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-08 07:54:28,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:54:28,699 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,717 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,718 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,720 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,729 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,738 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,740 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,743 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,744 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,745 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,746 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,748 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:28,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:28,760 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 07:54:28,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:28,884 INFO L204 MainTranslator]: Completed translation [2025-02-08 07:54:28,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28 WrapperNode [2025-02-08 07:54:28,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:28,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 07:54:28,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 07:54:28,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 07:54:28,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:28,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:28,965 INFO L138 Inliner]: procedures = 179, calls = 231, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 774 [2025-02-08 07:54:28,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 07:54:28,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 07:54:28,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 07:54:28,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 07:54:28,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:28,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:28,985 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:29,034 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2025-02-08 07:54:29,038 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:29,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:29,072 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:29,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:29,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:29,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:29,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 07:54:29,088 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 07:54:29,088 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 07:54:29,088 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 07:54:29,089 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (1/1) ... [2025-02-08 07:54:29,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:54:29,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:29,113 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) [2025-02-08 07:54:29,114 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 [2025-02-08 07:54:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 07:54:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 07:54:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 07:54:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 07:54:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 07:54:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 07:54:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 07:54:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 07:54:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 07:54:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 07:54:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 07:54:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 07:54:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 07:54:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 07:54:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 07:54:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 07:54:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 07:54:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 07:54:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 07:54:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 07:54:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 07:54:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 07:54:29,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 07:54:29,270 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 07:54:29,272 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 07:54:31,331 INFO L? ?]: Removed 903 outVars from TransFormulas that were not future-live. [2025-02-08 07:54:31,332 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 07:54:31,349 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 07:54:31,349 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 07:54:31,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:54:31 BoogieIcfgContainer [2025-02-08 07:54:31,350 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 07:54:31,351 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 07:54:31,351 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 07:54:31,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 07:54:31,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 07:54:28" (1/3) ... [2025-02-08 07:54:31,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e101bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:54:31, skipping insertion in model container [2025-02-08 07:54:31,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:28" (2/3) ... [2025-02-08 07:54:31,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e101bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:54:31, skipping insertion in model container [2025-02-08 07:54:31,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:54:31" (3/3) ... [2025-02-08 07:54:31,360 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-2.i [2025-02-08 07:54:31,370 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 07:54:31,371 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test1-2.i that has 4 procedures, 864 locations, 1 initial locations, 25 loop locations, and 425 error locations. [2025-02-08 07:54:31,424 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 07:54:31,432 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;@1e4265b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 07:54:31,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2025-02-08 07:54:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 859 states, 420 states have (on average 2.2142857142857144) internal successors, (930), 852 states have internal predecessors, (930), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 07:54:31,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 07:54:31,440 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:31,441 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 07:54:31,441 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:31,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:31,445 INFO L85 PathProgramCache]: Analyzing trace with hash 30035243, now seen corresponding path program 1 times [2025-02-08 07:54:31,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:31,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292804085] [2025-02-08 07:54:31,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:31,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:31,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:31,456 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) [2025-02-08 07:54:31,458 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 [2025-02-08 07:54:31,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 07:54:31,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 07:54:31,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:31,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:31,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 07:54:31,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:31,621 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:31,621 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:31,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292804085] [2025-02-08 07:54:31,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292804085] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:31,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:31,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:54:31,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626164495] [2025-02-08 07:54:31,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:31,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:54:31,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:31,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:54:31,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:54:31,644 INFO L87 Difference]: Start difference. First operand has 859 states, 420 states have (on average 2.2142857142857144) internal successors, (930), 852 states have internal predecessors, (930), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-02-08 07:54:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:32,342 INFO L93 Difference]: Finished difference Result 1161 states and 1260 transitions. [2025-02-08 07:54:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:54:32,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2025-02-08 07:54:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:32,362 INFO L225 Difference]: With dead ends: 1161 [2025-02-08 07:54:32,363 INFO L226 Difference]: Without dead ends: 1156 [2025-02-08 07:54:32,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:54:32,366 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 333 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:32,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 2611 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 07:54:32,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2025-02-08 07:54:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 928. [2025-02-08 07:54:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 497 states have (on average 2.0684104627766597) internal successors, (1028), 922 states have internal predecessors, (1028), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:54:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1044 transitions. [2025-02-08 07:54:32,439 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1044 transitions. Word has length 4 [2025-02-08 07:54:32,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:32,439 INFO L471 AbstractCegarLoop]: Abstraction has 928 states and 1044 transitions. [2025-02-08 07:54:32,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-02-08 07:54:32,439 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1044 transitions. [2025-02-08 07:54:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 07:54:32,439 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:32,440 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 07:54:32,446 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 [2025-02-08 07:54:32,644 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 [2025-02-08 07:54:32,644 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr422REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:32,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash 30690621, now seen corresponding path program 1 times [2025-02-08 07:54:32,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:32,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786795899] [2025-02-08 07:54:32,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:32,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:32,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:32,647 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) [2025-02-08 07:54:32,649 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 [2025-02-08 07:54:32,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 07:54:32,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 07:54:32,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:32,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:32,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:54:32,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:32,749 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 [2025-02-08 07:54:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:32,759 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:32,759 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:32,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786795899] [2025-02-08 07:54:32,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786795899] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:32,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:32,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:54:32,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426509570] [2025-02-08 07:54:32,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:32,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:54:32,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:32,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:54:32,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:32,761 INFO L87 Difference]: Start difference. First operand 928 states and 1044 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-02-08 07:54:33,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:33,616 INFO L93 Difference]: Finished difference Result 879 states and 990 transitions. [2025-02-08 07:54:33,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:54:33,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2025-02-08 07:54:33,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:33,619 INFO L225 Difference]: With dead ends: 879 [2025-02-08 07:54:33,619 INFO L226 Difference]: Without dead ends: 879 [2025-02-08 07:54:33,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:33,620 INFO L435 NwaCegarLoop]: 532 mSDtfsCounter, 536 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:33,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 646 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 07:54:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2025-02-08 07:54:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 879. [2025-02-08 07:54:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 497 states have (on average 1.959758551307847) internal successors, (974), 873 states have internal predecessors, (974), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:54:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 990 transitions. [2025-02-08 07:54:33,633 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 990 transitions. Word has length 4 [2025-02-08 07:54:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:33,634 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 990 transitions. [2025-02-08 07:54:33,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-02-08 07:54:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 990 transitions. [2025-02-08 07:54:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 07:54:33,634 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:33,634 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 07:54:33,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 07:54:33,835 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 [2025-02-08 07:54:33,835 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr423REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:33,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:33,836 INFO L85 PathProgramCache]: Analyzing trace with hash 30690622, now seen corresponding path program 1 times [2025-02-08 07:54:33,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:33,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338125307] [2025-02-08 07:54:33,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:33,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:33,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:33,838 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) [2025-02-08 07:54:33,839 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 [2025-02-08 07:54:33,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 07:54:33,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 07:54:33,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:33,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:33,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:54:33,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:33,951 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 [2025-02-08 07:54:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:33,964 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:33,964 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:33,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338125307] [2025-02-08 07:54:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338125307] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:33,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:33,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:54:33,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542918916] [2025-02-08 07:54:33,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:33,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:54:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:33,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:54:33,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:33,965 INFO L87 Difference]: Start difference. First operand 879 states and 990 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-02-08 07:54:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:35,073 INFO L93 Difference]: Finished difference Result 955 states and 1065 transitions. [2025-02-08 07:54:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:54:35,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2025-02-08 07:54:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:35,077 INFO L225 Difference]: With dead ends: 955 [2025-02-08 07:54:35,077 INFO L226 Difference]: Without dead ends: 955 [2025-02-08 07:54:35,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:35,077 INFO L435 NwaCegarLoop]: 801 mSDtfsCounter, 265 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:35,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1115 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 07:54:35,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2025-02-08 07:54:35,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 908. [2025-02-08 07:54:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 536 states have (on average 1.9309701492537314) internal successors, (1035), 902 states have internal predecessors, (1035), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:54:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1051 transitions. [2025-02-08 07:54:35,096 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1051 transitions. Word has length 4 [2025-02-08 07:54:35,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:35,096 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1051 transitions. [2025-02-08 07:54:35,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-02-08 07:54:35,096 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1051 transitions. [2025-02-08 07:54:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 07:54:35,096 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:35,097 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:54:35,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 07:54:35,297 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 [2025-02-08 07:54:35,297 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:35,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1358275959, now seen corresponding path program 1 times [2025-02-08 07:54:35,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:35,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2972730] [2025-02-08 07:54:35,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:35,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:35,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:35,300 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) [2025-02-08 07:54:35,309 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 [2025-02-08 07:54:35,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 07:54:35,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 07:54:35,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:35,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:35,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 07:54:35,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:35,392 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:35,392 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:35,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2972730] [2025-02-08 07:54:35,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2972730] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:35,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:35,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:54:35,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899892710] [2025-02-08 07:54:35,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:35,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:54:35,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:35,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:54:35,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:35,393 INFO L87 Difference]: Start difference. First operand 908 states and 1051 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-02-08 07:54:36,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:36,067 INFO L93 Difference]: Finished difference Result 909 states and 1051 transitions. [2025-02-08 07:54:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:54:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2025-02-08 07:54:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:36,070 INFO L225 Difference]: With dead ends: 909 [2025-02-08 07:54:36,070 INFO L226 Difference]: Without dead ends: 904 [2025-02-08 07:54:36,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:36,071 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 0 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:36,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1294 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-08 07:54:36,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2025-02-08 07:54:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2025-02-08 07:54:36,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 532 states have (on average 1.9360902255639099) internal successors, (1030), 898 states have internal predecessors, (1030), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:54:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1046 transitions. [2025-02-08 07:54:36,084 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1046 transitions. Word has length 7 [2025-02-08 07:54:36,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:36,085 INFO L471 AbstractCegarLoop]: Abstraction has 904 states and 1046 transitions. [2025-02-08 07:54:36,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-02-08 07:54:36,085 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1046 transitions. [2025-02-08 07:54:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 07:54:36,085 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:36,085 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:54:36,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 07:54:36,286 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 [2025-02-08 07:54:36,286 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:36,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:36,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1849757802, now seen corresponding path program 1 times [2025-02-08 07:54:36,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:36,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266466135] [2025-02-08 07:54:36,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:36,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:36,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:36,289 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) [2025-02-08 07:54:36,289 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 [2025-02-08 07:54:36,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 07:54:36,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 07:54:36,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:36,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:36,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:54:36,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:36,380 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 [2025-02-08 07:54:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:36,405 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:36,405 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:36,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266466135] [2025-02-08 07:54:36,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266466135] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:36,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:36,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:54:36,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131028526] [2025-02-08 07:54:36,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:36,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:54:36,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:36,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:54:36,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:54:36,405 INFO L87 Difference]: Start difference. First operand 904 states and 1046 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-02-08 07:54:37,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:37,559 INFO L93 Difference]: Finished difference Result 889 states and 1008 transitions. [2025-02-08 07:54:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:54:37,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2025-02-08 07:54:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:37,561 INFO L225 Difference]: With dead ends: 889 [2025-02-08 07:54:37,561 INFO L226 Difference]: Without dead ends: 889 [2025-02-08 07:54:37,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:54:37,562 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 586 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:37,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 952 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 07:54:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2025-02-08 07:54:37,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 881. [2025-02-08 07:54:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 532 states have (on average 1.849624060150376) internal successors, (984), 875 states have internal predecessors, (984), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:54:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1000 transitions. [2025-02-08 07:54:37,576 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1000 transitions. Word has length 10 [2025-02-08 07:54:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:37,576 INFO L471 AbstractCegarLoop]: Abstraction has 881 states and 1000 transitions. [2025-02-08 07:54:37,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-02-08 07:54:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1000 transitions. [2025-02-08 07:54:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 07:54:37,577 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:37,577 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:54:37,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 07:54:37,777 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 [2025-02-08 07:54:37,777 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:37,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:37,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1849757801, now seen corresponding path program 1 times [2025-02-08 07:54:37,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:37,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028949374] [2025-02-08 07:54:37,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:37,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:37,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:37,780 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) [2025-02-08 07:54:37,781 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 [2025-02-08 07:54:37,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 07:54:37,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 07:54:37,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:37,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:37,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:54:37,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:37,890 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 [2025-02-08 07:54:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:37,947 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:37,947 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:37,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028949374] [2025-02-08 07:54:37,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028949374] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:37,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:37,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:54:37,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129986941] [2025-02-08 07:54:37,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:37,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:54:37,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:37,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:54:37,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:54:37,948 INFO L87 Difference]: Start difference. First operand 881 states and 1000 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-02-08 07:54:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:39,443 INFO L93 Difference]: Finished difference Result 1058 states and 1168 transitions. [2025-02-08 07:54:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:54:39,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2025-02-08 07:54:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:39,446 INFO L225 Difference]: With dead ends: 1058 [2025-02-08 07:54:39,446 INFO L226 Difference]: Without dead ends: 1058 [2025-02-08 07:54:39,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:54:39,447 INFO L435 NwaCegarLoop]: 777 mSDtfsCounter, 388 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:39,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1545 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-08 07:54:39,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2025-02-08 07:54:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 995. [2025-02-08 07:54:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 646 states have (on average 1.736842105263158) internal successors, (1122), 989 states have internal predecessors, (1122), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:54:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1138 transitions. [2025-02-08 07:54:39,463 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1138 transitions. Word has length 10 [2025-02-08 07:54:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:39,464 INFO L471 AbstractCegarLoop]: Abstraction has 995 states and 1138 transitions. [2025-02-08 07:54:39,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-02-08 07:54:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1138 transitions. [2025-02-08 07:54:39,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 07:54:39,465 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:39,465 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] [2025-02-08 07:54:39,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 07:54:39,665 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 [2025-02-08 07:54:39,666 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:39,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:39,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1096509159, now seen corresponding path program 1 times [2025-02-08 07:54:39,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:39,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550600253] [2025-02-08 07:54:39,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:39,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:39,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:39,671 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) [2025-02-08 07:54:39,671 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 [2025-02-08 07:54:39,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 07:54:39,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 07:54:39,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:39,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:39,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:54:39,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:39,805 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 [2025-02-08 07:54:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:39,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:54:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:40,257 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550600253] [2025-02-08 07:54:40,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550600253] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:54:40,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:54:40,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 07:54:40,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057768950] [2025-02-08 07:54:40,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:54:40,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:54:40,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:40,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:54:40,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:54:40,258 INFO L87 Difference]: Start difference. First operand 995 states and 1138 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 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) [2025-02-08 07:54:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:44,651 INFO L93 Difference]: Finished difference Result 1414 states and 1658 transitions. [2025-02-08 07:54:44,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 07:54:44,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 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 29 [2025-02-08 07:54:44,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:44,658 INFO L225 Difference]: With dead ends: 1414 [2025-02-08 07:54:44,658 INFO L226 Difference]: Without dead ends: 1414 [2025-02-08 07:54:44,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-08 07:54:44,659 INFO L435 NwaCegarLoop]: 804 mSDtfsCounter, 1529 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:44,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 2525 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2025-02-08 07:54:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2025-02-08 07:54:44,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1159. [2025-02-08 07:54:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 810 states have (on average 1.671604938271605) internal successors, (1354), 1153 states have internal predecessors, (1354), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:54:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1370 transitions. [2025-02-08 07:54:44,680 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1370 transitions. Word has length 29 [2025-02-08 07:54:44,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:44,681 INFO L471 AbstractCegarLoop]: Abstraction has 1159 states and 1370 transitions. [2025-02-08 07:54:44,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 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) [2025-02-08 07:54:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1370 transitions. [2025-02-08 07:54:44,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-08 07:54:44,683 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:44,683 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] [2025-02-08 07:54:44,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 07:54:44,884 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 [2025-02-08 07:54:44,884 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr337REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:44,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1218662622, now seen corresponding path program 1 times [2025-02-08 07:54:44,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:44,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267179588] [2025-02-08 07:54:44,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:44,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:44,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:44,888 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) [2025-02-08 07:54:44,889 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 [2025-02-08 07:54:44,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 07:54:45,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 07:54:45,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:45,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:45,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:54:45,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:45,062 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:45,062 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:45,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267179588] [2025-02-08 07:54:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267179588] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:45,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:45,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:54:45,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295289157] [2025-02-08 07:54:45,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:45,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:54:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:45,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:54:45,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:54:45,063 INFO L87 Difference]: Start difference. First operand 1159 states and 1370 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2025-02-08 07:54:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:45,120 INFO L93 Difference]: Finished difference Result 848 states and 934 transitions. [2025-02-08 07:54:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:54:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 45 [2025-02-08 07:54:45,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:45,124 INFO L225 Difference]: With dead ends: 848 [2025-02-08 07:54:45,124 INFO L226 Difference]: Without dead ends: 848 [2025-02-08 07:54:45,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:54:45,125 INFO L435 NwaCegarLoop]: 748 mSDtfsCounter, 56 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2171 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 [2025-02-08 07:54:45,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2171 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:54:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2025-02-08 07:54:45,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 846. [2025-02-08 07:54:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 520 states have (on average 1.7615384615384615) internal successors, (916), 840 states have internal predecessors, (916), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:54:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 932 transitions. [2025-02-08 07:54:45,140 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 932 transitions. Word has length 45 [2025-02-08 07:54:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:45,140 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 932 transitions. [2025-02-08 07:54:45,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2025-02-08 07:54:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 932 transitions. [2025-02-08 07:54:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-08 07:54:45,141 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:45,141 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] [2025-02-08 07:54:45,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 07:54:45,342 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 [2025-02-08 07:54:45,342 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr337REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:45,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:45,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1372332778, now seen corresponding path program 1 times [2025-02-08 07:54:45,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:45,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212282153] [2025-02-08 07:54:45,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:45,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:45,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:45,345 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) [2025-02-08 07:54:45,346 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 [2025-02-08 07:54:45,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-08 07:54:45,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-08 07:54:45,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:45,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:45,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:54:45,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:45,528 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 [2025-02-08 07:54:45,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 07:54:45,887 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 [2025-02-08 07:54:45,903 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:54:45,903 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 [2025-02-08 07:54:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:45,908 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:45,908 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:45,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212282153] [2025-02-08 07:54:45,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212282153] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:45,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:45,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:54:45,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938130071] [2025-02-08 07:54:45,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:45,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:54:45,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:45,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:54:45,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:54:45,910 INFO L87 Difference]: Start difference. First operand 846 states and 932 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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) [2025-02-08 07:54:47,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:47,061 INFO L93 Difference]: Finished difference Result 808 states and 894 transitions. [2025-02-08 07:54:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:54:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2025-02-08 07:54:47,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:47,063 INFO L225 Difference]: With dead ends: 808 [2025-02-08 07:54:47,063 INFO L226 Difference]: Without dead ends: 808 [2025-02-08 07:54:47,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:54:47,064 INFO L435 NwaCegarLoop]: 417 mSDtfsCounter, 851 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:47,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 669 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 07:54:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2025-02-08 07:54:47,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 769. [2025-02-08 07:54:47,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 481 states have (on average 1.6673596673596673) internal successors, (802), 763 states have internal predecessors, (802), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:54:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 818 transitions. [2025-02-08 07:54:47,073 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 818 transitions. Word has length 53 [2025-02-08 07:54:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:47,073 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 818 transitions. [2025-02-08 07:54:47,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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) [2025-02-08 07:54:47,073 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 818 transitions. [2025-02-08 07:54:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-08 07:54:47,074 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:47,074 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] [2025-02-08 07:54:47,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 07:54:47,275 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 [2025-02-08 07:54:47,275 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:47,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:47,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1461188351, now seen corresponding path program 1 times [2025-02-08 07:54:47,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:47,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366504978] [2025-02-08 07:54:47,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:47,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:47,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:47,279 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) [2025-02-08 07:54:47,280 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 [2025-02-08 07:54:47,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 07:54:47,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 07:54:47,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:47,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:47,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:54:47,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:47,447 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 [2025-02-08 07:54:47,458 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 [2025-02-08 07:54:47,477 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 [2025-02-08 07:54:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:47,485 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:47,485 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:47,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366504978] [2025-02-08 07:54:47,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366504978] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:47,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:47,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:54:47,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738136876] [2025-02-08 07:54:47,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:47,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:54:47,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:47,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:54:47,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:54:47,486 INFO L87 Difference]: Start difference. First operand 769 states and 818 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:54:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:48,570 INFO L93 Difference]: Finished difference Result 768 states and 817 transitions. [2025-02-08 07:54:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 07:54:48,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-02-08 07:54:48,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:48,573 INFO L225 Difference]: With dead ends: 768 [2025-02-08 07:54:48,573 INFO L226 Difference]: Without dead ends: 768 [2025-02-08 07:54:48,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:54:48,573 INFO L435 NwaCegarLoop]: 720 mSDtfsCounter, 2 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:48,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1862 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 07:54:48,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2025-02-08 07:54:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2025-02-08 07:54:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 481 states have (on average 1.6652806652806653) internal successors, (801), 762 states have internal predecessors, (801), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:54:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 817 transitions. [2025-02-08 07:54:48,582 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 817 transitions. Word has length 58 [2025-02-08 07:54:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:48,582 INFO L471 AbstractCegarLoop]: Abstraction has 768 states and 817 transitions. [2025-02-08 07:54:48,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:54:48,582 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 817 transitions. [2025-02-08 07:54:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-08 07:54:48,584 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:48,584 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] [2025-02-08 07:54:48,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 07:54:48,784 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 [2025-02-08 07:54:48,785 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:48,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:48,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1461188350, now seen corresponding path program 1 times [2025-02-08 07:54:48,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:48,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320453839] [2025-02-08 07:54:48,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:48,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:48,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:48,788 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) [2025-02-08 07:54:48,789 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 [2025-02-08 07:54:48,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 07:54:48,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 07:54:48,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:48,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:48,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 07:54:48,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:48,950 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 [2025-02-08 07:54:48,967 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 [2025-02-08 07:54:48,975 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 [2025-02-08 07:54:49,013 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 [2025-02-08 07:54:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:49,028 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:49,028 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:49,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320453839] [2025-02-08 07:54:49,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320453839] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:49,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:49,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:54:49,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431227283] [2025-02-08 07:54:49,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:49,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:54:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:49,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:54:49,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:54:49,030 INFO L87 Difference]: Start difference. First operand 768 states and 817 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:54:50,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:50,357 INFO L93 Difference]: Finished difference Result 767 states and 816 transitions. [2025-02-08 07:54:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 07:54:50,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-02-08 07:54:50,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:50,360 INFO L225 Difference]: With dead ends: 767 [2025-02-08 07:54:50,360 INFO L226 Difference]: Without dead ends: 767 [2025-02-08 07:54:50,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:54:50,360 INFO L435 NwaCegarLoop]: 720 mSDtfsCounter, 1 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:50,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1885 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 07:54:50,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2025-02-08 07:54:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2025-02-08 07:54:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 480 states have (on average 1.6666666666666667) internal successors, (800), 761 states have internal predecessors, (800), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:54:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 816 transitions. [2025-02-08 07:54:50,368 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 816 transitions. Word has length 58 [2025-02-08 07:54:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:50,369 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 816 transitions. [2025-02-08 07:54:50,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:54:50,369 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 816 transitions. [2025-02-08 07:54:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 07:54:50,369 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:50,369 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] [2025-02-08 07:54:50,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 07:54:50,570 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 [2025-02-08 07:54:50,570 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:50,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:50,570 INFO L85 PathProgramCache]: Analyzing trace with hash 881971294, now seen corresponding path program 1 times [2025-02-08 07:54:50,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:50,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179713333] [2025-02-08 07:54:50,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:50,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:50,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:50,572 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) [2025-02-08 07:54:50,581 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 [2025-02-08 07:54:50,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-08 07:54:50,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 07:54:50,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:50,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:50,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 07:54:50,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:50,750 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 [2025-02-08 07:54:50,800 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 [2025-02-08 07:54:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:50,809 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:50,809 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:50,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179713333] [2025-02-08 07:54:50,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179713333] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:50,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:50,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 07:54:50,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307156057] [2025-02-08 07:54:50,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:50,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 07:54:50,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:50,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 07:54:50,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 07:54:50,811 INFO L87 Difference]: Start difference. First operand 767 states and 816 transitions. Second operand has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2025-02-08 07:54:52,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:52,192 INFO L93 Difference]: Finished difference Result 779 states and 831 transitions. [2025-02-08 07:54:52,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 07:54:52,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 66 [2025-02-08 07:54:52,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:52,195 INFO L225 Difference]: With dead ends: 779 [2025-02-08 07:54:52,195 INFO L226 Difference]: Without dead ends: 779 [2025-02-08 07:54:52,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-08 07:54:52,196 INFO L435 NwaCegarLoop]: 708 mSDtfsCounter, 10 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:52,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2555 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 07:54:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2025-02-08 07:54:52,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 773. [2025-02-08 07:54:52,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 485 states have (on average 1.663917525773196) internal successors, (807), 766 states have internal predecessors, (807), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 07:54:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 826 transitions. [2025-02-08 07:54:52,205 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 826 transitions. Word has length 66 [2025-02-08 07:54:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:52,205 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 826 transitions. [2025-02-08 07:54:52,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2025-02-08 07:54:52,205 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 826 transitions. [2025-02-08 07:54:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 07:54:52,206 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:52,206 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] [2025-02-08 07:54:52,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 07:54:52,406 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 [2025-02-08 07:54:52,406 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:52,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash 881971295, now seen corresponding path program 1 times [2025-02-08 07:54:52,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:52,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823287589] [2025-02-08 07:54:52,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:52,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:52,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:52,409 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) [2025-02-08 07:54:52,410 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 [2025-02-08 07:54:52,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-08 07:54:52,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 07:54:52,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:52,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:52,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:54:52,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:52,593 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:52,593 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:52,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823287589] [2025-02-08 07:54:52,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823287589] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:52,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:52,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:54:52,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275699896] [2025-02-08 07:54:52,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:52,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:54:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:52,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:54:52,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:54:52,594 INFO L87 Difference]: Start difference. First operand 773 states and 826 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-02-08 07:54:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:52,629 INFO L93 Difference]: Finished difference Result 770 states and 820 transitions. [2025-02-08 07:54:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:54:52,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 66 [2025-02-08 07:54:52,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:52,632 INFO L225 Difference]: With dead ends: 770 [2025-02-08 07:54:52,632 INFO L226 Difference]: Without dead ends: 770 [2025-02-08 07:54:52,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:54:52,633 INFO L435 NwaCegarLoop]: 720 mSDtfsCounter, 0 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2155 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 [2025-02-08 07:54:52,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2155 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:54:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2025-02-08 07:54:52,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2025-02-08 07:54:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 482 states have (on average 1.66597510373444) internal successors, (803), 764 states have internal predecessors, (803), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 07:54:52,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 820 transitions. [2025-02-08 07:54:52,643 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 820 transitions. Word has length 66 [2025-02-08 07:54:52,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:52,644 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 820 transitions. [2025-02-08 07:54:52,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-02-08 07:54:52,644 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 820 transitions. [2025-02-08 07:54:52,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-08 07:54:52,644 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:52,644 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] [2025-02-08 07:54:52,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 07:54:52,845 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 [2025-02-08 07:54:52,845 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:52,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash -316754192, now seen corresponding path program 1 times [2025-02-08 07:54:52,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:52,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135252102] [2025-02-08 07:54:52,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:52,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:52,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:52,848 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) [2025-02-08 07:54:52,849 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 [2025-02-08 07:54:52,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-08 07:54:53,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 07:54:53,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:53,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:53,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:54:53,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:53,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:54:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:53,085 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:53,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135252102] [2025-02-08 07:54:53,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135252102] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:54:53,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:54:53,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-08 07:54:53,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337851237] [2025-02-08 07:54:53,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:54:53,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:54:53,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:53,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:54:53,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:54:53,086 INFO L87 Difference]: Start difference. First operand 770 states and 820 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2025-02-08 07:54:53,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:53,193 INFO L93 Difference]: Finished difference Result 782 states and 837 transitions. [2025-02-08 07:54:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 07:54:53,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 67 [2025-02-08 07:54:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:53,198 INFO L225 Difference]: With dead ends: 782 [2025-02-08 07:54:53,198 INFO L226 Difference]: Without dead ends: 782 [2025-02-08 07:54:53,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-08 07:54:53,199 INFO L435 NwaCegarLoop]: 720 mSDtfsCounter, 8 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:53,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2871 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:54:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2025-02-08 07:54:53,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 780. [2025-02-08 07:54:53,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 491 states have (on average 1.6659877800407332) internal successors, (818), 773 states have internal predecessors, (818), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 07:54:53,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 835 transitions. [2025-02-08 07:54:53,209 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 835 transitions. Word has length 67 [2025-02-08 07:54:53,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:53,209 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 835 transitions. [2025-02-08 07:54:53,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2025-02-08 07:54:53,210 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 835 transitions. [2025-02-08 07:54:53,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-08 07:54:53,210 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:53,210 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] [2025-02-08 07:54:53,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 07:54:53,410 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 [2025-02-08 07:54:53,411 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:54:53,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1675617502, now seen corresponding path program 2 times [2025-02-08 07:54:53,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:53,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609062550] [2025-02-08 07:54:53,411 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 07:54:53,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:53,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:53,413 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) [2025-02-08 07:54:53,414 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 [2025-02-08 07:54:53,527 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-02-08 07:55:13,626 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-02-08 07:55:13,626 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 07:55:13,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:13,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 07:55:13,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:13,722 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:55:13,722 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 [2025-02-08 07:55:13,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 07:55:13,871 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 07:55:13,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-08 07:55:13,902 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 33 treesize of output 15 [2025-02-08 07:55:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 07:55:13,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:55:13,981 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-08 07:55:13,981 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 25 treesize of output 24 [2025-02-08 07:55:14,044 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609062550] [2025-02-08 07:55:14,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609062550] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 07:55:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [952892233] [2025-02-08 07:55:14,045 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 07:55:14,045 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 07:55:14,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 07:55:14,049 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 07:55:14,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2025-02-08 07:55:14,218 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-02-08 07:55:14,810 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-02-08 07:55:14,810 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 07:55:14,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:14,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:55:14,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:14,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:55:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [952892233] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:55:15,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 07:55:15,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-02-08 07:55:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517194370] [2025-02-08 07:55:15,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 07:55:15,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 07:55:15,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:15,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 07:55:15,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=551, Unknown=8, NotChecked=0, Total=650 [2025-02-08 07:55:15,103 INFO L87 Difference]: Start difference. First operand 780 states and 835 transitions. Second operand has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 07:55:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:20,228 INFO L93 Difference]: Finished difference Result 796 states and 858 transitions. [2025-02-08 07:55:20,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 07:55:20,229 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 70 [2025-02-08 07:55:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:20,231 INFO L225 Difference]: With dead ends: 796 [2025-02-08 07:55:20,231 INFO L226 Difference]: Without dead ends: 792 [2025-02-08 07:55:20,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=416, Invalid=2331, Unknown=9, NotChecked=0, Total=2756 [2025-02-08 07:55:20,232 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 489 mSDsluCounter, 7729 mSDsCounter, 0 mSdLazyCounter, 5223 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 8214 SdHoareTripleChecker+Invalid, 5251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:20,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 8214 Invalid, 5251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5223 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-02-08 07:55:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2025-02-08 07:55:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 788. [2025-02-08 07:55:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 500 states have (on average 1.658) internal successors, (829), 781 states have internal predecessors, (829), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 07:55:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 846 transitions. [2025-02-08 07:55:20,243 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 846 transitions. Word has length 70 [2025-02-08 07:55:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:20,243 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 846 transitions. [2025-02-08 07:55:20,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 07:55:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 846 transitions. [2025-02-08 07:55:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-08 07:55:20,247 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:20,247 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:20,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2025-02-08 07:55:20,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 07:55:20,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:20,647 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:55:20,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1188449183, now seen corresponding path program 1 times [2025-02-08 07:55:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:20,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183154701] [2025-02-08 07:55:20,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:20,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:20,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:20,650 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) [2025-02-08 07:55:20,651 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 [2025-02-08 07:55:20,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-08 07:55:20,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 07:55:20,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:20,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:20,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 07:55:20,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:20,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:55:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:21,337 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:21,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183154701] [2025-02-08 07:55:21,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183154701] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:55:21,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:55:21,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-08 07:55:21,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419876864] [2025-02-08 07:55:21,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:55:21,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 07:55:21,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:21,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 07:55:21,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-08 07:55:21,338 INFO L87 Difference]: Start difference. First operand 788 states and 846 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 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) [2025-02-08 07:55:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:22,518 INFO L93 Difference]: Finished difference Result 812 states and 885 transitions. [2025-02-08 07:55:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 07:55:22,518 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 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 [2025-02-08 07:55:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:22,520 INFO L225 Difference]: With dead ends: 812 [2025-02-08 07:55:22,520 INFO L226 Difference]: Without dead ends: 806 [2025-02-08 07:55:22,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 07:55:22,521 INFO L435 NwaCegarLoop]: 720 mSDtfsCounter, 26 mSDsluCounter, 8603 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 9323 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:22,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 9323 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 07:55:22,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2025-02-08 07:55:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2025-02-08 07:55:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 518 states have (on average 1.6447876447876448) internal successors, (852), 799 states have internal predecessors, (852), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 07:55:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 869 transitions. [2025-02-08 07:55:22,531 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 869 transitions. Word has length 76 [2025-02-08 07:55:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:22,531 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 869 transitions. [2025-02-08 07:55:22,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 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) [2025-02-08 07:55:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 869 transitions. [2025-02-08 07:55:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-02-08 07:55:22,532 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:22,532 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:22,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 07:55:22,733 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 [2025-02-08 07:55:22,733 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:55:22,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:22,736 INFO L85 PathProgramCache]: Analyzing trace with hash 979822879, now seen corresponding path program 2 times [2025-02-08 07:55:22,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:22,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015000157] [2025-02-08 07:55:22,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 07:55:22,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:22,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:22,739 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) [2025-02-08 07:55:22,741 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 [2025-02-08 07:55:22,883 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 88 statements into 2 equivalence classes. [2025-02-08 07:55:33,963 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 88 of 88 statements. [2025-02-08 07:55:33,963 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 07:55:33,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:33,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-02-08 07:55:33,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:34,039 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:55:34,040 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 [2025-02-08 07:55:34,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:55:34,062 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 [2025-02-08 07:55:34,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 07:55:34,123 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 22 treesize of output 10 [2025-02-08 07:55:34,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-08 07:55:34,452 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 07:55:34,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-02-08 07:55:34,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-02-08 07:55:34,490 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 31 treesize of output 13 [2025-02-08 07:55:34,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-08 07:55:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-02-08 07:55:34,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:55:34,870 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1425 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1426 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1425) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1426) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1425 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1425) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv16 32)) (bvadd .cse1 (_ bv20 32))))))) is different from false [2025-02-08 07:55:34,874 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015000157] [2025-02-08 07:55:34,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015000157] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 07:55:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1981273185] [2025-02-08 07:55:34,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 07:55:34,874 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 07:55:34,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 07:55:34,876 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 07:55:34,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2025-02-08 07:55:35,082 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 88 statements into 2 equivalence classes. [2025-02-08 07:55:35,752 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 88 of 88 statements. [2025-02-08 07:55:35,753 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 07:55:35,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:35,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-08 07:55:35,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:36,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:55:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:55:38,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1981273185] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:55:38,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 07:55:38,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-02-08 07:55:38,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627446865] [2025-02-08 07:55:38,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 07:55:38,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-08 07:55:38,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:38,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-08 07:55:38,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2025-02-08 07:55:38,164 INFO L87 Difference]: Start difference. First operand 806 states and 869 transitions. Second operand has 58 states, 57 states have (on average 2.982456140350877) internal successors, (170), 58 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 07:55:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:56,300 INFO L93 Difference]: Finished difference Result 851 states and 945 transitions. [2025-02-08 07:55:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2025-02-08 07:55:56,300 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.982456140350877) internal successors, (170), 58 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 88 [2025-02-08 07:55:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:56,302 INFO L225 Difference]: With dead ends: 851 [2025-02-08 07:55:56,302 INFO L226 Difference]: Without dead ends: 841 [2025-02-08 07:55:56,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3244 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3205, Invalid=15430, Unknown=1, NotChecked=270, Total=18906 [2025-02-08 07:55:56,305 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 502 mSDsluCounter, 13162 mSDsCounter, 0 mSdLazyCounter, 10562 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 13651 SdHoareTripleChecker+Invalid, 10581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 10562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:56,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 13651 Invalid, 10581 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 10562 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2025-02-08 07:55:56,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2025-02-08 07:55:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 841. [2025-02-08 07:55:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 554 states have (on average 1.6155234657039712) internal successors, (895), 834 states have internal predecessors, (895), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 07:55:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 912 transitions. [2025-02-08 07:55:56,313 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 912 transitions. Word has length 88 [2025-02-08 07:55:56,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:56,313 INFO L471 AbstractCegarLoop]: Abstraction has 841 states and 912 transitions. [2025-02-08 07:55:56,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.982456140350877) internal successors, (170), 58 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 07:55:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 912 transitions. [2025-02-08 07:55:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-08 07:55:56,314 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:56,314 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:56,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 07:55:56,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2025-02-08 07:55:56,714 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,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-08 07:55:56,715 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-08 07:55:56,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:56,715 INFO L85 PathProgramCache]: Analyzing trace with hash -730794949, now seen corresponding path program 1 times [2025-02-08 07:55:56,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:56,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33545278] [2025-02-08 07:55:56,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:56,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:56,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:56,717 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) [2025-02-08 07:55:56,718 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 [2025-02-08 07:55:56,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-08 07:55:57,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 07:55:57,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:57,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:57,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-02-08 07:55:57,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:57,035 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 [2025-02-08 07:55:57,098 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:55:57,098 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 [2025-02-08 07:55:57,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 07:55:57,409 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 07:55:57,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-08 07:55:57,461 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 07:55:57,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-08 07:55:57,470 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 33 treesize of output 15 [2025-02-08 07:55:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-02-08 07:55:57,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:55:57,527 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2052 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2052) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-02-08 07:55:57,793 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2025-02-08 07:55:57,794 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 37 treesize of output 36 [2025-02-08 07:55:57,800 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2098 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2052 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2098))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2052)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem32#1.base|)) is different from false [2025-02-08 07:55:57,801 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33545278] [2025-02-08 07:55:57,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33545278] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 07:55:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1032459786] [2025-02-08 07:55:57,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:57,801 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 07:55:57,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 07:55:57,803 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 07:55:57,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2025-02-08 07:55:58,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-08 07:55:59,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 07:55:59,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:59,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:59,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-02-08 07:55:59,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:59,475 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-02-08 07:55:59,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2025-02-08 07:55:59,740 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2025-02-08 07:55:59,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2025-02-08 07:55:59,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 07:55:59,913 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 28 treesize of output 16