./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.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_BER_test10-2.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 e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:46:20,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:46:20,545 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 07:46:20,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:46:20,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:46:20,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:46:20,575 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:46:20,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:46:20,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:46:20,576 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:46:20,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:46:20,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:46:20,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:46:20,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:46:20,577 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:46:20,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:46:20,578 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:46:20,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:46:20,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:46:20,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:46:20,578 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:46:20,578 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:46:20,578 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:46:20,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:46:20,579 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:46:20,579 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:46:20,579 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:46:20,579 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:46:20,579 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:46:20,579 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:46:20,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:46:20,579 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:46:20,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:46:20,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:46:20,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:46:20,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:46:20,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 07:46:20,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 07:46:20,580 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:46:20,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:46:20,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:46:20,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:46:20,580 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 -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2025-02-08 07:46:20,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:46:20,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:46:20,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:46:20,847 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:46:20,847 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:46:20,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2025-02-08 07:46:22,001 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/37350f191/0a1af824e4484ed886b51f2b3ec22550/FLAGf1c53e00e [2025-02-08 07:46:22,318 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:46:22,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2025-02-08 07:46:22,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/37350f191/0a1af824e4484ed886b51f2b3ec22550/FLAGf1c53e00e [2025-02-08 07:46:22,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/37350f191/0a1af824e4484ed886b51f2b3ec22550 [2025-02-08 07:46:22,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:46:22,352 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:46:22,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:46:22,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:46:22,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:46:22,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:46:22" (1/1) ... [2025-02-08 07:46:22,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b602f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:22, skipping insertion in model container [2025-02-08 07:46:22,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:46:22" (1/1) ... [2025-02-08 07:46:22,394 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:46:22,654 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 07:46:22,677 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 07:46:22,679 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 07:46:22,682 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 07:46:22,685 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 07:46:22,703 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 07:46:22,705 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 07:46:22,706 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 07:46:22,712 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 07:46:22,742 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 07:46:22,742 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 07:46:22,744 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 07:46:22,744 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 07:46:22,765 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 07:46:22,768 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 07:46:22,770 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 07:46:22,770 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 07:46:22,786 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 07:46:22,792 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 07:46:22,794 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 07:46:22,795 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 07:46:22,809 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 07:46:22,813 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 07:46:22,815 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 07:46:22,816 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 07:46:22,817 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 07:46:22,819 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 07:46:22,821 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:22,821 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:22,822 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 07:46:22,824 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:22,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:46:22,847 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 07:46:22,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51ae027d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:22, skipping insertion in model container [2025-02-08 07:46:22,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:46:22,848 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-08 07:46:22,852 INFO L158 Benchmark]: Toolchain (without parser) took 499.57ms. Allocated memory is still 201.3MB. Free memory was 155.0MB in the beginning and 125.9MB in the end (delta: 29.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 07:46:22,852 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 218.1MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 07:46:22,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.81ms. Allocated memory is still 201.3MB. Free memory was 155.0MB in the beginning and 125.9MB in the end (delta: 29.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 07:46:22,853 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 218.1MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 493.81ms. Allocated memory is still 201.3MB. Free memory was 155.0MB in the beginning and 125.9MB in the end (delta: 29.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 757]: 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_BER_test10-2.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 e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:46:24,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:46:24,826 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 07:46:24,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:46:24,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:46:24,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:46:24,844 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:46:24,844 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:46:24,844 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:46:24,844 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:46:24,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:46:24,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:46:24,845 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:46:24,845 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:46:24,845 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:46:24,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:46:24,845 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:46:24,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:46:24,845 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:46:24,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:46:24,846 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:46:24,846 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:46:24,846 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:46:24,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:46:24,846 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:46:24,846 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 07:46:24,846 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 07:46:24,846 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:46:24,846 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:46:24,846 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:46:24,847 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:46:24,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:46:24,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:46:24,847 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 -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2025-02-08 07:46:25,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:46:25,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:46:25,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:46:25,061 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:46:25,061 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:46:25,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2025-02-08 07:46:26,181 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f54e3c1f4/dd60c13924c4433abd5370fdf7af8e78/FLAG2eddb6830 [2025-02-08 07:46:26,485 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:46:26,487 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2025-02-08 07:46:26,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f54e3c1f4/dd60c13924c4433abd5370fdf7af8e78/FLAG2eddb6830 [2025-02-08 07:46:26,755 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f54e3c1f4/dd60c13924c4433abd5370fdf7af8e78 [2025-02-08 07:46:26,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:46:26,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:46:26,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:46:26,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:46:26,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:46:26,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:46:26" (1/1) ... [2025-02-08 07:46:26,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@951b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:26, skipping insertion in model container [2025-02-08 07:46:26,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:46:26" (1/1) ... [2025-02-08 07:46:26,809 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:46:27,289 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 07:46:27,328 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 07:46:27,332 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 07:46:27,335 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 07:46:27,340 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 07:46:27,375 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 07:46:27,379 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 07:46:27,382 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 07:46:27,390 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 07:46:27,408 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 07:46:27,408 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 07:46:27,410 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 07:46:27,410 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 07:46:27,421 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 07:46:27,421 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 07:46:27,423 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 07:46:27,423 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 07:46:27,433 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 07:46:27,433 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 07:46:27,435 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 07:46:27,435 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 07:46:27,444 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 07:46:27,445 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,446 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 07:46:27,446 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 07:46:27,447 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 07:46:27,449 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,449 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,450 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 07:46:27,450 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 07:46:27,452 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 07:46:27,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:46:27,467 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-08 07:46:27,476 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:46:27,492 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 07:46:27,499 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 07:46:27,500 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 07:46:27,502 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 07:46:27,504 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 07:46:27,516 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 07:46:27,517 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 07:46:27,518 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,521 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,546 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 07:46:27,547 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 07:46:27,548 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 07:46:27,548 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 07:46:27,565 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 07:46:27,565 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 07:46:27,567 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 07:46:27,567 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 07:46:27,584 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 07:46:27,584 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 07:46:27,585 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,586 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 07:46:27,595 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 07:46:27,595 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 07:46:27,596 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,597 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,597 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,599 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,599 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,599 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:46:27,600 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 07:46:27,601 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 07:46:27,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:46:27,610 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 07:46:27,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:46:27,745 INFO L204 MainTranslator]: Completed translation [2025-02-08 07:46:27,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27 WrapperNode [2025-02-08 07:46:27,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:46:27,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 07:46:27,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 07:46:27,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 07:46:27,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:27,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:27,866 INFO L138 Inliner]: procedures = 180, calls = 558, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2327 [2025-02-08 07:46:27,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 07:46:27,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 07:46:27,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 07:46:27,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 07:46:27,873 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:27,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:27,890 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:28,026 INFO L175 MemorySlicer]: Split 528 memory accesses to 3 slices as follows [2, 420, 106]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 94 writes are split as follows [0, 90, 4]. [2025-02-08 07:46:28,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:28,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:28,091 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:28,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:28,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:28,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:28,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 07:46:28,135 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 07:46:28,135 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 07:46:28,135 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 07:46:28,136 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (1/1) ... [2025-02-08 07:46:28,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:46:28,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:28,165 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 07:46:28,166 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 07:46:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 07:46:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 07:46:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-08 07:46:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-02-08 07:46:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-02-08 07:46:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 07:46:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 07:46:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-08 07:46:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 07:46:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 07:46:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 07:46:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 07:46:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 07:46:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 07:46:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 07:46:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 07:46:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 07:46:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 07:46:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 07:46:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 07:46:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 07:46:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 07:46:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 07:46:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 07:46:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 07:46:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 07:46:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 07:46:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 07:46:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-08 07:46:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 07:46:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 07:46:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-08 07:46:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 07:46:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 07:46:28,444 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 07:46:28,445 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 07:46:33,624 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-08 07:46:33,803 INFO L? ?]: Removed 2230 outVars from TransFormulas that were not future-live. [2025-02-08 07:46:33,803 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 07:46:33,848 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 07:46:33,849 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 07:46:33,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:46:33 BoogieIcfgContainer [2025-02-08 07:46:33,849 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 07:46:33,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 07:46:33,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 07:46:33,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 07:46:33,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 07:46:26" (1/3) ... [2025-02-08 07:46:33,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13dbcb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:46:33, skipping insertion in model container [2025-02-08 07:46:33,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:46:27" (2/3) ... [2025-02-08 07:46:33,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13dbcb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:46:33, skipping insertion in model container [2025-02-08 07:46:33,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:46:33" (3/3) ... [2025-02-08 07:46:33,858 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-2.i [2025-02-08 07:46:33,869 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 07:46:33,870 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test10-2.i that has 6 procedures, 2308 locations, 1 initial locations, 89 loop locations, and 1091 error locations. [2025-02-08 07:46:33,934 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 07:46:33,944 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;@3005f7a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 07:46:33,944 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1091 error locations. [2025-02-08 07:46:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 2298 states, 1194 states have (on average 2.1566164154103853) internal successors, (2575), 2283 states have internal predecessors, (2575), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-02-08 07:46:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-02-08 07:46:33,957 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:33,957 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-02-08 07:46:33,958 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1088REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:46:33,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash 84287, now seen corresponding path program 1 times [2025-02-08 07:46:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:33,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705034774] [2025-02-08 07:46:33,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:33,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:33,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:33,978 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 07:46:33,994 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 07:46:34,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 07:46:34,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 07:46:34,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:34,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:34,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:46:34,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:34,185 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 07:46:34,201 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 07:46:34,202 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:34,202 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:34,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705034774] [2025-02-08 07:46:34,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705034774] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:34,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:34,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:46:34,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334946042] [2025-02-08 07:46:34,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:34,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:46:34,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:34,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:46:34,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:34,227 INFO L87 Difference]: Start difference. First operand has 2298 states, 1194 states have (on average 2.1566164154103853) internal successors, (2575), 2283 states have internal predecessors, (2575), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 07:46:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:37,346 INFO L93 Difference]: Finished difference Result 2968 states and 3151 transitions. [2025-02-08 07:46:37,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:46:37,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2025-02-08 07:46:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:37,379 INFO L225 Difference]: With dead ends: 2968 [2025-02-08 07:46:37,380 INFO L226 Difference]: Without dead ends: 2963 [2025-02-08 07:46:37,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 07:46:37,387 INFO L435 NwaCegarLoop]: 1421 mSDtfsCounter, 2165 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:37,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2175 Valid, 1904 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-02-08 07:46:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2025-02-08 07:46:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2442. [2025-02-08 07:46:37,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 1368 states have (on average 2.0051169590643276) internal successors, (2743), 2426 states have internal predecessors, (2743), 16 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 07:46:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 2771 transitions. [2025-02-08 07:46:37,499 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 2771 transitions. Word has length 2 [2025-02-08 07:46:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:37,499 INFO L471 AbstractCegarLoop]: Abstraction has 2442 states and 2771 transitions. [2025-02-08 07:46:37,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 07:46:37,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 2771 transitions. [2025-02-08 07:46:37,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-02-08 07:46:37,500 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:37,500 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-02-08 07:46:37,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 07:46:37,701 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 07:46:37,701 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:46:37,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:37,702 INFO L85 PathProgramCache]: Analyzing trace with hash 84288, now seen corresponding path program 1 times [2025-02-08 07:46:37,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:37,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136528875] [2025-02-08 07:46:37,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:37,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:37,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:37,705 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 07:46:37,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 07:46:37,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 07:46:37,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 07:46:37,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:37,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:37,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:46:37,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:37,839 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 07:46:37,847 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 07:46:37,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:37,847 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:37,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136528875] [2025-02-08 07:46:37,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136528875] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:37,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:37,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:46:37,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852635574] [2025-02-08 07:46:37,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:37,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:46:37,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:37,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:46:37,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:37,849 INFO L87 Difference]: Start difference. First operand 2442 states and 2771 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 07:46:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:41,201 INFO L93 Difference]: Finished difference Result 3256 states and 3665 transitions. [2025-02-08 07:46:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:46:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2025-02-08 07:46:41,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:41,234 INFO L225 Difference]: With dead ends: 3256 [2025-02-08 07:46:41,234 INFO L226 Difference]: Without dead ends: 3256 [2025-02-08 07:46:41,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 07:46:41,235 INFO L435 NwaCegarLoop]: 2053 mSDtfsCounter, 888 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:41,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 3376 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-02-08 07:46:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2025-02-08 07:46:41,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 2928. [2025-02-08 07:46:41,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 1852 states have (on average 1.9605831533477323) internal successors, (3631), 2909 states have internal predecessors, (3631), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:46:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 3665 transitions. [2025-02-08 07:46:41,304 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 3665 transitions. Word has length 2 [2025-02-08 07:46:41,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:41,304 INFO L471 AbstractCegarLoop]: Abstraction has 2928 states and 3665 transitions. [2025-02-08 07:46:41,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 07:46:41,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 3665 transitions. [2025-02-08 07:46:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 07:46:41,305 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:41,305 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:41,311 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 07:46:41,505 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 07:46:41,506 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1085REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:46:41,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:41,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1745146054, now seen corresponding path program 1 times [2025-02-08 07:46:41,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:41,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040311279] [2025-02-08 07:46:41,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:41,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:41,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:41,511 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 07:46:41,513 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 07:46:41,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 07:46:41,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 07:46:41,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:41,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:41,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:46:41,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:41,660 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 07:46:41,704 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-02-08 07:46:41,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2025-02-08 07:46:41,746 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 07:46:41,746 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:41,746 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:41,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040311279] [2025-02-08 07:46:41,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040311279] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:41,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:41,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:41,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86199709] [2025-02-08 07:46:41,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:41,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:41,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:41,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:41,748 INFO L87 Difference]: Start difference. First operand 2928 states and 3665 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 07:46:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:48,059 INFO L93 Difference]: Finished difference Result 4633 states and 5155 transitions. [2025-02-08 07:46:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:46:48,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 07:46:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:48,070 INFO L225 Difference]: With dead ends: 4633 [2025-02-08 07:46:48,070 INFO L226 Difference]: Without dead ends: 4633 [2025-02-08 07:46:48,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 07:46:48,071 INFO L435 NwaCegarLoop]: 2334 mSDtfsCounter, 2362 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 3134 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 4974 SdHoareTripleChecker+Invalid, 3151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:48,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2368 Valid, 4974 Invalid, 3151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3134 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2025-02-08 07:46:48,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2025-02-08 07:46:48,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 3220. [2025-02-08 07:46:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3220 states, 2144 states have (on average 1.9570895522388059) internal successors, (4196), 3201 states have internal predecessors, (4196), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:46:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 4230 transitions. [2025-02-08 07:46:48,138 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 4230 transitions. Word has length 7 [2025-02-08 07:46:48,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:48,139 INFO L471 AbstractCegarLoop]: Abstraction has 3220 states and 4230 transitions. [2025-02-08 07:46:48,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 07:46:48,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 4230 transitions. [2025-02-08 07:46:48,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 07:46:48,139 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:48,139 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:48,147 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 07:46:48,344 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 07:46:48,344 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1082REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:46:48,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:48,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1735044651, now seen corresponding path program 1 times [2025-02-08 07:46:48,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:48,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097478477] [2025-02-08 07:46:48,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:48,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:48,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:48,351 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 07:46:48,352 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 07:46:48,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 07:46:48,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 07:46:48,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:48,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:48,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:46:48,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:48,501 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 07:46:48,516 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 07:46:48,516 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:48,516 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:48,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097478477] [2025-02-08 07:46:48,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097478477] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:48,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:48,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:48,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963371079] [2025-02-08 07:46:48,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:48,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:46:48,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:48,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:46:48,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:48,517 INFO L87 Difference]: Start difference. First operand 3220 states and 4230 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:51,098 INFO L93 Difference]: Finished difference Result 3945 states and 4994 transitions. [2025-02-08 07:46:51,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:46:51,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 07:46:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:51,107 INFO L225 Difference]: With dead ends: 3945 [2025-02-08 07:46:51,107 INFO L226 Difference]: Without dead ends: 3945 [2025-02-08 07:46:51,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 07:46:51,108 INFO L435 NwaCegarLoop]: 2252 mSDtfsCounter, 1941 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:51,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 2937 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-08 07:46:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2025-02-08 07:46:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 3128. [2025-02-08 07:46:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 2144 states have (on average 1.8945895522388059) internal successors, (4062), 3109 states have internal predecessors, (4062), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:46:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4096 transitions. [2025-02-08 07:46:51,160 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4096 transitions. Word has length 8 [2025-02-08 07:46:51,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:51,160 INFO L471 AbstractCegarLoop]: Abstraction has 3128 states and 4096 transitions. [2025-02-08 07:46:51,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:51,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4096 transitions. [2025-02-08 07:46:51,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 07:46:51,161 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:51,161 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:51,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 07:46:51,361 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 07:46:51,361 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1083REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:46:51,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1735044650, now seen corresponding path program 1 times [2025-02-08 07:46:51,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963034670] [2025-02-08 07:46:51,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:51,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:51,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:51,365 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 07:46:51,366 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 07:46:51,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 07:46:51,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 07:46:51,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:51,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:51,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:46:51,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:51,515 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 07:46:51,534 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 07:46:51,534 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:51,534 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:51,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963034670] [2025-02-08 07:46:51,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963034670] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:51,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:51,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416710155] [2025-02-08 07:46:51,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:51,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:46:51,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:51,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:46:51,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:46:51,535 INFO L87 Difference]: Start difference. First operand 3128 states and 4096 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:55,070 INFO L93 Difference]: Finished difference Result 4771 states and 6227 transitions. [2025-02-08 07:46:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:46:55,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 07:46:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:55,080 INFO L225 Difference]: With dead ends: 4771 [2025-02-08 07:46:55,080 INFO L226 Difference]: Without dead ends: 4771 [2025-02-08 07:46:55,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 07:46:55,081 INFO L435 NwaCegarLoop]: 2604 mSDtfsCounter, 1442 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:55,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 3726 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-02-08 07:46:55,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2025-02-08 07:46:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 3300. [2025-02-08 07:46:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 2326 states have (on average 1.8774720550300945) internal successors, (4367), 3281 states have internal predecessors, (4367), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:46:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4401 transitions. [2025-02-08 07:46:55,134 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4401 transitions. Word has length 8 [2025-02-08 07:46:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:55,134 INFO L471 AbstractCegarLoop]: Abstraction has 3300 states and 4401 transitions. [2025-02-08 07:46:55,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:46:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4401 transitions. [2025-02-08 07:46:55,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 07:46:55,134 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:55,134 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:55,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 07:46:55,335 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 07:46:55,335 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr450REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:46:55,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:55,337 INFO L85 PathProgramCache]: Analyzing trace with hash -476445407, now seen corresponding path program 1 times [2025-02-08 07:46:55,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:55,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647757629] [2025-02-08 07:46:55,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:55,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:55,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:55,339 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 07:46:55,340 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 07:46:55,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 07:46:55,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 07:46:55,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:55,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:55,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:46:55,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:55,509 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 07:46:55,553 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 07:46:55,553 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:55,553 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647757629] [2025-02-08 07:46:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647757629] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:55,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:55,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723551842] [2025-02-08 07:46:55,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:55,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:55,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:55,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:55,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:55,555 INFO L87 Difference]: Start difference. First operand 3300 states and 4401 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 07:46:58,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:46:58,597 INFO L93 Difference]: Finished difference Result 3769 states and 4720 transitions. [2025-02-08 07:46:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:46:58,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2025-02-08 07:46:58,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:46:58,606 INFO L225 Difference]: With dead ends: 3769 [2025-02-08 07:46:58,606 INFO L226 Difference]: Without dead ends: 3769 [2025-02-08 07:46:58,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 07:46:58,606 INFO L435 NwaCegarLoop]: 1363 mSDtfsCounter, 2126 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:46:58,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2136 Valid, 3056 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-02-08 07:46:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2025-02-08 07:46:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3277. [2025-02-08 07:46:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 2326 states have (on average 1.857695614789338) internal successors, (4321), 3258 states have internal predecessors, (4321), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:46:58,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 4355 transitions. [2025-02-08 07:46:58,638 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 4355 transitions. Word has length 11 [2025-02-08 07:46:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:46:58,638 INFO L471 AbstractCegarLoop]: Abstraction has 3277 states and 4355 transitions. [2025-02-08 07:46:58,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 07:46:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 4355 transitions. [2025-02-08 07:46:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 07:46:58,639 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:46:58,639 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:46:58,646 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 07:46:58,843 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 07:46:58,843 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr451REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:46:58,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:46:58,843 INFO L85 PathProgramCache]: Analyzing trace with hash -476445406, now seen corresponding path program 1 times [2025-02-08 07:46:58,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:46:58,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628600050] [2025-02-08 07:46:58,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:46:58,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:46:58,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:46:58,846 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 07:46:58,847 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 07:46:58,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 07:46:58,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 07:46:58,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:46:58,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:46:58,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:46:58,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:46:58,996 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 07:46:59,079 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 07:46:59,079 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:46:59,079 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:46:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628600050] [2025-02-08 07:46:59,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628600050] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:46:59,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:46:59,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:46:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562155526] [2025-02-08 07:46:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:46:59,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:46:59,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:46:59,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:46:59,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:46:59,080 INFO L87 Difference]: Start difference. First operand 3277 states and 4355 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 07:47:03,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:03,170 INFO L93 Difference]: Finished difference Result 4039 states and 5189 transitions. [2025-02-08 07:47:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:47:03,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2025-02-08 07:47:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:03,178 INFO L225 Difference]: With dead ends: 4039 [2025-02-08 07:47:03,178 INFO L226 Difference]: Without dead ends: 4039 [2025-02-08 07:47:03,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 07:47:03,179 INFO L435 NwaCegarLoop]: 1958 mSDtfsCounter, 867 mSDsluCounter, 2413 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 4371 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:03,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 4371 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-02-08 07:47:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4039 states. [2025-02-08 07:47:03,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4039 to 3326. [2025-02-08 07:47:03,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 2375 states have (on average 1.8454736842105264) internal successors, (4383), 3307 states have internal predecessors, (4383), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:47:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4417 transitions. [2025-02-08 07:47:03,218 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4417 transitions. Word has length 11 [2025-02-08 07:47:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:03,218 INFO L471 AbstractCegarLoop]: Abstraction has 3326 states and 4417 transitions. [2025-02-08 07:47:03,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 07:47:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4417 transitions. [2025-02-08 07:47:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 07:47:03,219 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:03,219 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:47:03,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 07:47:03,419 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 07:47:03,420 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:03,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:03,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1884949167, now seen corresponding path program 1 times [2025-02-08 07:47:03,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:03,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856233982] [2025-02-08 07:47:03,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:03,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:03,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:03,423 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 07:47:03,424 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 07:47:03,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 07:47:03,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 07:47:03,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:03,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:03,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:47:03,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:03,569 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:03,569 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:03,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856233982] [2025-02-08 07:47:03,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856233982] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:03,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:03,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:47:03,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249830383] [2025-02-08 07:47:03,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:03,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:03,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:03,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:03,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:03,570 INFO L87 Difference]: Start difference. First operand 3326 states and 4417 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 07:47:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:03,704 INFO L93 Difference]: Finished difference Result 3248 states and 4296 transitions. [2025-02-08 07:47:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:47:03,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2025-02-08 07:47:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:03,714 INFO L225 Difference]: With dead ends: 3248 [2025-02-08 07:47:03,715 INFO L226 Difference]: Without dead ends: 3248 [2025-02-08 07:47:03,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 07:47:03,715 INFO L435 NwaCegarLoop]: 2197 mSDtfsCounter, 45 mSDsluCounter, 4371 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6568 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:03,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6568 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:47:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2025-02-08 07:47:03,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 3242. [2025-02-08 07:47:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3242 states, 2310 states have (on average 1.8424242424242425) internal successors, (4256), 3223 states have internal predecessors, (4256), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:47:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 4290 transitions. [2025-02-08 07:47:03,768 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 4290 transitions. Word has length 12 [2025-02-08 07:47:03,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:03,768 INFO L471 AbstractCegarLoop]: Abstraction has 3242 states and 4290 transitions. [2025-02-08 07:47:03,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 07:47:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 4290 transitions. [2025-02-08 07:47:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:47:03,770 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:03,770 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] [2025-02-08 07:47:03,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 07:47:03,970 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 07:47:03,970 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1073REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:03,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:03,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1037688454, now seen corresponding path program 1 times [2025-02-08 07:47:03,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:03,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895106283] [2025-02-08 07:47:03,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:03,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:03,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:03,973 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 07:47:03,976 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 07:47:04,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:47:04,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:47:04,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:04,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:04,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:47:04,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:04,142 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 07:47:04,229 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 07:47:04,229 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:04,229 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:04,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895106283] [2025-02-08 07:47:04,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895106283] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:04,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:04,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:47:04,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111073507] [2025-02-08 07:47:04,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:04,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:04,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:04,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:04,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:04,230 INFO L87 Difference]: Start difference. First operand 3242 states and 4290 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:47:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:08,701 INFO L93 Difference]: Finished difference Result 4713 states and 6119 transitions. [2025-02-08 07:47:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:47:08,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:47:08,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:08,712 INFO L225 Difference]: With dead ends: 4713 [2025-02-08 07:47:08,713 INFO L226 Difference]: Without dead ends: 4713 [2025-02-08 07:47:08,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:47:08,713 INFO L435 NwaCegarLoop]: 2457 mSDtfsCounter, 1523 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 5213 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:08,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 5213 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-02-08 07:47:08,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2025-02-08 07:47:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 3356. [2025-02-08 07:47:08,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3356 states, 2424 states have (on average 1.8316831683168318) internal successors, (4440), 3337 states have internal predecessors, (4440), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:47:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4474 transitions. [2025-02-08 07:47:08,746 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4474 transitions. Word has length 20 [2025-02-08 07:47:08,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:08,746 INFO L471 AbstractCegarLoop]: Abstraction has 3356 states and 4474 transitions. [2025-02-08 07:47:08,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:47:08,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4474 transitions. [2025-02-08 07:47:08,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:47:08,749 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:08,749 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] [2025-02-08 07:47:08,762 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 07:47:08,950 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 07:47:08,950 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1072REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:08,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:08,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1037688453, now seen corresponding path program 1 times [2025-02-08 07:47:08,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:08,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580324538] [2025-02-08 07:47:08,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:08,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:08,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:08,953 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 07:47:08,955 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 07:47:09,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:47:09,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:47:09,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:09,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:09,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:47:09,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:09,175 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 07:47:09,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:09,175 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:09,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580324538] [2025-02-08 07:47:09,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580324538] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:09,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:09,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:47:09,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263444833] [2025-02-08 07:47:09,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:09,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:09,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:09,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:09,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:09,177 INFO L87 Difference]: Start difference. First operand 3356 states and 4474 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:47:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:12,155 INFO L93 Difference]: Finished difference Result 4050 states and 5167 transitions. [2025-02-08 07:47:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:47:12,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:47:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:12,162 INFO L225 Difference]: With dead ends: 4050 [2025-02-08 07:47:12,162 INFO L226 Difference]: Without dead ends: 4050 [2025-02-08 07:47:12,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:47:12,163 INFO L435 NwaCegarLoop]: 2102 mSDtfsCounter, 1905 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:12,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 4366 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-02-08 07:47:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2025-02-08 07:47:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 3333. [2025-02-08 07:47:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 2424 states have (on average 1.7937293729372936) internal successors, (4348), 3314 states have internal predecessors, (4348), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:47:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 4382 transitions. [2025-02-08 07:47:12,228 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 4382 transitions. Word has length 20 [2025-02-08 07:47:12,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:12,228 INFO L471 AbstractCegarLoop]: Abstraction has 3333 states and 4382 transitions. [2025-02-08 07:47:12,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:47:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 4382 transitions. [2025-02-08 07:47:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:47:12,230 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:12,230 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] [2025-02-08 07:47:12,241 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 07:47:12,430 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 07:47:12,431 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr764REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:12,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash 446019354, now seen corresponding path program 1 times [2025-02-08 07:47:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:12,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386519209] [2025-02-08 07:47:12,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:12,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:12,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:12,435 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 07:47:12,437 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 07:47:12,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:47:12,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:47:12,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:12,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:12,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:47:12,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:12,638 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 07:47:12,638 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:12,638 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:12,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386519209] [2025-02-08 07:47:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386519209] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:12,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:12,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:47:12,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765138490] [2025-02-08 07:47:12,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:12,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:12,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:12,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:12,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:12,640 INFO L87 Difference]: Start difference. First operand 3333 states and 4382 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:47:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:15,605 INFO L93 Difference]: Finished difference Result 4035 states and 5083 transitions. [2025-02-08 07:47:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:47:15,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:47:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:15,612 INFO L225 Difference]: With dead ends: 4035 [2025-02-08 07:47:15,612 INFO L226 Difference]: Without dead ends: 4035 [2025-02-08 07:47:15,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:47:15,614 INFO L435 NwaCegarLoop]: 2102 mSDtfsCounter, 1882 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:15,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 4366 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-02-08 07:47:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2025-02-08 07:47:15,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 3310. [2025-02-08 07:47:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3310 states, 2424 states have (on average 1.7557755775577557) internal successors, (4256), 3291 states have internal predecessors, (4256), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:47:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 4290 transitions. [2025-02-08 07:47:15,648 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 4290 transitions. Word has length 20 [2025-02-08 07:47:15,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:15,648 INFO L471 AbstractCegarLoop]: Abstraction has 3310 states and 4290 transitions. [2025-02-08 07:47:15,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:47:15,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 4290 transitions. [2025-02-08 07:47:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:47:15,651 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:15,651 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] [2025-02-08 07:47:15,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-08 07:47:15,851 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 07:47:15,852 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr765REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:15,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash 446019355, now seen corresponding path program 1 times [2025-02-08 07:47:15,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:15,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121767124] [2025-02-08 07:47:15,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:15,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:15,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:15,857 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 07:47:15,867 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 07:47:16,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:47:16,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:47:16,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:16,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:16,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:47:16,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:16,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:47:16,136 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 07:47:16,136 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:16,136 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121767124] [2025-02-08 07:47:16,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121767124] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:16,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:16,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:47:16,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610309661] [2025-02-08 07:47:16,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:16,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:16,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:16,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:16,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:16,138 INFO L87 Difference]: Start difference. First operand 3310 states and 4290 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:47:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:20,782 INFO L93 Difference]: Finished difference Result 4758 states and 6073 transitions. [2025-02-08 07:47:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:47:20,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:47:20,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:20,793 INFO L225 Difference]: With dead ends: 4758 [2025-02-08 07:47:20,793 INFO L226 Difference]: Without dead ends: 4758 [2025-02-08 07:47:20,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:47:20,793 INFO L435 NwaCegarLoop]: 2429 mSDtfsCounter, 1454 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 5139 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:20,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 5139 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2025-02-08 07:47:20,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2025-02-08 07:47:20,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 3424. [2025-02-08 07:47:20,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 2538 states have (on average 1.731284475965327) internal successors, (4394), 3405 states have internal predecessors, (4394), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:47:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 4428 transitions. [2025-02-08 07:47:20,828 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 4428 transitions. Word has length 20 [2025-02-08 07:47:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:20,828 INFO L471 AbstractCegarLoop]: Abstraction has 3424 states and 4428 transitions. [2025-02-08 07:47:20,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:47:20,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 4428 transitions. [2025-02-08 07:47:20,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-08 07:47:20,829 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:20,829 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:47:20,837 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 07:47:21,030 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 07:47:21,030 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1073REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:21,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:21,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1957131938, now seen corresponding path program 1 times [2025-02-08 07:47:21,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:21,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952213787] [2025-02-08 07:47:21,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:21,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:21,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:21,034 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 07:47:21,035 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 07:47:21,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 07:47:21,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 07:47:21,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:21,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:21,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:47:21,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:21,268 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 07:47:21,416 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 07:47:21,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:47:21,749 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 07:47:21,749 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:21,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952213787] [2025-02-08 07:47:21,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952213787] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:47:21,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:47:21,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 07:47:21,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450518862] [2025-02-08 07:47:21,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:47:21,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:47:21,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:21,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:47:21,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:47:21,750 INFO L87 Difference]: Start difference. First operand 3424 states and 4428 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 07:47:33,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:33,622 INFO L93 Difference]: Finished difference Result 5145 states and 6603 transitions. [2025-02-08 07:47:33,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 07:47:33,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 39 [2025-02-08 07:47:33,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:33,628 INFO L225 Difference]: With dead ends: 5145 [2025-02-08 07:47:33,629 INFO L226 Difference]: Without dead ends: 5145 [2025-02-08 07:47:33,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 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 07:47:33,630 INFO L435 NwaCegarLoop]: 2428 mSDtfsCounter, 2171 mSDsluCounter, 5495 mSDsCounter, 0 mSdLazyCounter, 5249 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 7923 SdHoareTripleChecker+Invalid, 5277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:33,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2177 Valid, 7923 Invalid, 5277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5249 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2025-02-08 07:47:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5145 states. [2025-02-08 07:47:33,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5145 to 3588. [2025-02-08 07:47:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3588 states, 2702 states have (on average 1.7120651369356032) internal successors, (4626), 3569 states have internal predecessors, (4626), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:47:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 4660 transitions. [2025-02-08 07:47:33,660 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 4660 transitions. Word has length 39 [2025-02-08 07:47:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:33,660 INFO L471 AbstractCegarLoop]: Abstraction has 3588 states and 4660 transitions. [2025-02-08 07:47:33,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 07:47:33,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 4660 transitions. [2025-02-08 07:47:33,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-08 07:47:33,661 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:33,661 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:47:33,673 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 07:47:33,862 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 07:47:33,862 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr765REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:33,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:33,862 INFO L85 PathProgramCache]: Analyzing trace with hash 504796323, now seen corresponding path program 1 times [2025-02-08 07:47:33,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:33,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480023630] [2025-02-08 07:47:33,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:33,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:33,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:33,869 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 07:47:33,870 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 07:47:34,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 07:47:34,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 07:47:34,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:34,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:34,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:47:34,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:34,075 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 07:47:34,215 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 07:47:34,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:47:34,598 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 07:47:34,599 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:34,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480023630] [2025-02-08 07:47:34,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480023630] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:47:34,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:47:34,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 07:47:34,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493595602] [2025-02-08 07:47:34,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:47:34,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:47:34,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:34,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:47:34,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:47:34,600 INFO L87 Difference]: Start difference. First operand 3588 states and 4660 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 07:47:46,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:46,118 INFO L93 Difference]: Finished difference Result 5309 states and 6835 transitions. [2025-02-08 07:47:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 07:47:46,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 39 [2025-02-08 07:47:46,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:46,124 INFO L225 Difference]: With dead ends: 5309 [2025-02-08 07:47:46,124 INFO L226 Difference]: Without dead ends: 5309 [2025-02-08 07:47:46,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 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 07:47:46,124 INFO L435 NwaCegarLoop]: 2428 mSDtfsCounter, 3689 mSDsluCounter, 6069 mSDsCounter, 0 mSdLazyCounter, 5651 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3695 SdHoareTripleChecker+Valid, 8497 SdHoareTripleChecker+Invalid, 5684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 5651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:46,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3695 Valid, 8497 Invalid, 5684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 5651 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2025-02-08 07:47:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5309 states. [2025-02-08 07:47:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5309 to 3752. [2025-02-08 07:47:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3752 states, 2866 states have (on average 1.6950453593859036) internal successors, (4858), 3733 states have internal predecessors, (4858), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:47:46,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 4892 transitions. [2025-02-08 07:47:46,159 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 4892 transitions. Word has length 39 [2025-02-08 07:47:46,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:46,160 INFO L471 AbstractCegarLoop]: Abstraction has 3752 states and 4892 transitions. [2025-02-08 07:47:46,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 07:47:46,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 4892 transitions. [2025-02-08 07:47:46,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-08 07:47:46,160 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:46,161 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] [2025-02-08 07:47:46,184 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 07:47:46,373 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 07:47:46,374 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr404REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:46,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:46,375 INFO L85 PathProgramCache]: Analyzing trace with hash 54658926, now seen corresponding path program 1 times [2025-02-08 07:47:46,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:46,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379206105] [2025-02-08 07:47:46,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:46,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:46,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:46,378 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 07:47:46,379 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 07:47:46,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 07:47:46,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 07:47:46,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:46,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:46,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:47:46,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:46,690 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 07:47:46,690 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:46,690 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:46,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379206105] [2025-02-08 07:47:46,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379206105] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:46,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:46,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:47:46,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807632073] [2025-02-08 07:47:46,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:46,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:47:46,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:46,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:47:46,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:47:46,691 INFO L87 Difference]: Start difference. First operand 3752 states and 4892 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 07:47:46,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:46,961 INFO L93 Difference]: Finished difference Result 5337 states and 6590 transitions. [2025-02-08 07:47:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:47:46,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 41 [2025-02-08 07:47:46,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:46,967 INFO L225 Difference]: With dead ends: 5337 [2025-02-08 07:47:46,968 INFO L226 Difference]: Without dead ends: 5337 [2025-02-08 07:47:46,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 07:47:46,968 INFO L435 NwaCegarLoop]: 2246 mSDtfsCounter, 1455 mSDsluCounter, 2071 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 4317 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:46,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 4317 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 07:47:46,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2025-02-08 07:47:47,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 4470. [2025-02-08 07:47:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 3580 states have (on average 1.6885474860335195) internal successors, (6045), 4444 states have internal predecessors, (6045), 26 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-08 07:47:47,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 6093 transitions. [2025-02-08 07:47:47,013 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 6093 transitions. Word has length 41 [2025-02-08 07:47:47,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:47,013 INFO L471 AbstractCegarLoop]: Abstraction has 4470 states and 6093 transitions. [2025-02-08 07:47:47,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 07:47:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 6093 transitions. [2025-02-08 07:47:47,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-08 07:47:47,014 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:47,014 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] [2025-02-08 07:47:47,023 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 07:47:47,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:47,215 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:47,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash 522692098, now seen corresponding path program 1 times [2025-02-08 07:47:47,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:47,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896748177] [2025-02-08 07:47:47,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:47,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:47,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:47,219 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:47,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 07:47:47,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-08 07:47:47,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 07:47:47,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:47,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:47,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:47:47,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:47,476 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 07:47:47,477 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:47,477 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:47,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896748177] [2025-02-08 07:47:47,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896748177] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:47,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:47,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:47:47,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546335616] [2025-02-08 07:47:47,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:47,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:47,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:47,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:47,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:47,478 INFO L87 Difference]: Start difference. First operand 4470 states and 6093 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:47,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:47,530 INFO L93 Difference]: Finished difference Result 4452 states and 6059 transitions. [2025-02-08 07:47:47,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:47:47,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-02-08 07:47:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:47,536 INFO L225 Difference]: With dead ends: 4452 [2025-02-08 07:47:47,536 INFO L226 Difference]: Without dead ends: 4452 [2025-02-08 07:47:47,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 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 07:47:47,537 INFO L435 NwaCegarLoop]: 2153 mSDtfsCounter, 27 mSDsluCounter, 4269 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6422 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:47,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6422 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:47:47,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2025-02-08 07:47:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 4452. [2025-02-08 07:47:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 3562 states have (on average 1.6875350926445818) internal successors, (6011), 4426 states have internal predecessors, (6011), 26 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-08 07:47:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 6059 transitions. [2025-02-08 07:47:47,571 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 6059 transitions. Word has length 51 [2025-02-08 07:47:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:47,571 INFO L471 AbstractCegarLoop]: Abstraction has 4452 states and 6059 transitions. [2025-02-08 07:47:47,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 6059 transitions. [2025-02-08 07:47:47,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-08 07:47:47,572 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:47,572 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] [2025-02-08 07:47:47,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 07:47:47,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:47,772 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr712REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:47,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:47,774 INFO L85 PathProgramCache]: Analyzing trace with hash 280976066, now seen corresponding path program 1 times [2025-02-08 07:47:47,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:47,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105767026] [2025-02-08 07:47:47,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:47,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:47,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:47,777 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 07:47:47,778 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 07:47:47,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-08 07:47:47,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-08 07:47:47,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:47,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:47,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:47:47,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:48,217 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 07:47:48,218 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:48,218 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105767026] [2025-02-08 07:47:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105767026] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:48,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:48,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:47:48,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436848348] [2025-02-08 07:47:48,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:48,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:47:48,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:48,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:47:48,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:47:48,218 INFO L87 Difference]: Start difference. First operand 4452 states and 6059 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 07:47:48,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:48,359 INFO L93 Difference]: Finished difference Result 5818 states and 7518 transitions. [2025-02-08 07:47:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:47:48,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 52 [2025-02-08 07:47:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:48,376 INFO L225 Difference]: With dead ends: 5818 [2025-02-08 07:47:48,376 INFO L226 Difference]: Without dead ends: 5818 [2025-02-08 07:47:48,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 07:47:48,379 INFO L435 NwaCegarLoop]: 2170 mSDtfsCounter, 1332 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:48,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 4275 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:47:48,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2025-02-08 07:47:48,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 5189. [2025-02-08 07:47:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 4295 states have (on average 1.6821885913853318) internal successors, (7225), 5156 states have internal predecessors, (7225), 33 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-02-08 07:47:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 7287 transitions. [2025-02-08 07:47:48,477 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 7287 transitions. Word has length 52 [2025-02-08 07:47:48,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:48,477 INFO L471 AbstractCegarLoop]: Abstraction has 5189 states and 7287 transitions. [2025-02-08 07:47:48,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 07:47:48,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 7287 transitions. [2025-02-08 07:47:48,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 07:47:48,481 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:48,481 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] [2025-02-08 07:47:48,490 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 07:47:48,681 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 07:47:48,682 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr991REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:48,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:48,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1682869539, now seen corresponding path program 1 times [2025-02-08 07:47:48,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:48,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733317423] [2025-02-08 07:47:48,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:48,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:48,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:48,684 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 07:47:48,686 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 07:47:48,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 07:47:48,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 07:47:48,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:48,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:48,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:47:48,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:48,956 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 07:47:48,956 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:48,956 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:48,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733317423] [2025-02-08 07:47:48,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733317423] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:48,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:48,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:47:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059956139] [2025-02-08 07:47:48,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:48,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:48,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:48,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:48,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:48,957 INFO L87 Difference]: Start difference. First operand 5189 states and 7287 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 07:47:49,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:49,083 INFO L93 Difference]: Finished difference Result 4734 states and 6633 transitions. [2025-02-08 07:47:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:47:49,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2025-02-08 07:47:49,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:49,088 INFO L225 Difference]: With dead ends: 4734 [2025-02-08 07:47:49,088 INFO L226 Difference]: Without dead ends: 4734 [2025-02-08 07:47:49,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 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 07:47:49,089 INFO L435 NwaCegarLoop]: 2107 mSDtfsCounter, 56 mSDsluCounter, 4141 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6248 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:49,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6248 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:47:49,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2025-02-08 07:47:49,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4731. [2025-02-08 07:47:49,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4731 states, 3860 states have (on average 1.7015544041450776) internal successors, (6568), 4698 states have internal predecessors, (6568), 33 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-02-08 07:47:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4731 states to 4731 states and 6630 transitions. [2025-02-08 07:47:49,172 INFO L78 Accepts]: Start accepts. Automaton has 4731 states and 6630 transitions. Word has length 55 [2025-02-08 07:47:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:49,173 INFO L471 AbstractCegarLoop]: Abstraction has 4731 states and 6630 transitions. [2025-02-08 07:47:49,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 07:47:49,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4731 states and 6630 transitions. [2025-02-08 07:47:49,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 07:47:49,173 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:49,173 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] [2025-02-08 07:47:49,183 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 07:47:49,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:49,374 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr683REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:49,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:49,375 INFO L85 PathProgramCache]: Analyzing trace with hash -333929250, now seen corresponding path program 1 times [2025-02-08 07:47:49,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:49,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792988876] [2025-02-08 07:47:49,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:49,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:49,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:49,381 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:49,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 07:47:49,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 07:47:49,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 07:47:49,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:49,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:49,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:47:49,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:49,642 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 07:47:49,642 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:49,642 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:49,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792988876] [2025-02-08 07:47:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792988876] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:49,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:49,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:47:49,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763623988] [2025-02-08 07:47:49,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:49,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:49,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:49,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:49,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:49,644 INFO L87 Difference]: Start difference. First operand 4731 states and 6630 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 07:47:49,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:49,764 INFO L93 Difference]: Finished difference Result 4267 states and 5888 transitions. [2025-02-08 07:47:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:47:49,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2025-02-08 07:47:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:49,769 INFO L225 Difference]: With dead ends: 4267 [2025-02-08 07:47:49,769 INFO L226 Difference]: Without dead ends: 4267 [2025-02-08 07:47:49,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 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 07:47:49,769 INFO L435 NwaCegarLoop]: 2072 mSDtfsCounter, 76 mSDsluCounter, 4051 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6123 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:49,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6123 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:47:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2025-02-08 07:47:49,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4260. [2025-02-08 07:47:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 3401 states have (on average 1.7109673625404294) internal successors, (5819), 4227 states have internal predecessors, (5819), 33 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-02-08 07:47:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 5881 transitions. [2025-02-08 07:47:49,823 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 5881 transitions. Word has length 55 [2025-02-08 07:47:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:49,823 INFO L471 AbstractCegarLoop]: Abstraction has 4260 states and 5881 transitions. [2025-02-08 07:47:49,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 07:47:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 5881 transitions. [2025-02-08 07:47:49,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 07:47:49,824 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:49,824 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] [2025-02-08 07:47:49,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 07:47:50,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:50,025 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:50,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 35232186, now seen corresponding path program 1 times [2025-02-08 07:47:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:50,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334491019] [2025-02-08 07:47:50,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:50,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:50,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:50,028 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 07:47:50,030 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 07:47:50,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 07:47:50,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 07:47:50,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:50,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:50,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 07:47:50,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:50,236 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:47:50,241 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:47:50,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2025-02-08 07:47:50,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 07:47:50,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2025-02-08 07:47:50,331 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 07:47:50,331 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:50,331 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:50,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334491019] [2025-02-08 07:47:50,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334491019] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:50,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:50,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:47:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462225899] [2025-02-08 07:47:50,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:50,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:50,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:50,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:50,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:50,333 INFO L87 Difference]: Start difference. First operand 4260 states and 5881 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:51,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:51,139 INFO L93 Difference]: Finished difference Result 4837 states and 6375 transitions. [2025-02-08 07:47:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:47:51,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-02-08 07:47:51,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:51,145 INFO L225 Difference]: With dead ends: 4837 [2025-02-08 07:47:51,145 INFO L226 Difference]: Without dead ends: 4837 [2025-02-08 07:47:51,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:47:51,146 INFO L435 NwaCegarLoop]: 2194 mSDtfsCounter, 1719 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 5634 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:51,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1728 Valid, 5634 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 07:47:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4837 states. [2025-02-08 07:47:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4837 to 3976. [2025-02-08 07:47:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3976 states, 3120 states have (on average 1.7189102564102565) internal successors, (5363), 3946 states have internal predecessors, (5363), 30 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-02-08 07:47:51,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3976 states to 3976 states and 5419 transitions. [2025-02-08 07:47:51,204 INFO L78 Accepts]: Start accepts. Automaton has 3976 states and 5419 transitions. Word has length 59 [2025-02-08 07:47:51,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:51,204 INFO L471 AbstractCegarLoop]: Abstraction has 3976 states and 5419 transitions. [2025-02-08 07:47:51,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:51,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3976 states and 5419 transitions. [2025-02-08 07:47:51,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-08 07:47:51,205 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:51,205 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] [2025-02-08 07:47:51,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-08 07:47:51,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:51,406 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr991REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:51,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:51,406 INFO L85 PathProgramCache]: Analyzing trace with hash 632176805, now seen corresponding path program 1 times [2025-02-08 07:47:51,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:51,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551336751] [2025-02-08 07:47:51,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:51,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:51,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:51,410 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:51,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 07:47:51,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-08 07:47:51,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-08 07:47:51,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:51,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:51,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:47:51,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:51,698 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 07:47:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 07:47:52,137 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 07:47:52,148 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:47:52,149 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 07:47:52,155 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 07:47:52,155 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:52,155 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:52,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551336751] [2025-02-08 07:47:52,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551336751] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:52,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:52,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:47:52,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704644433] [2025-02-08 07:47:52,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:52,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:47:52,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:52,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:47:52,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:47:52,157 INFO L87 Difference]: Start difference. First operand 3976 states and 5419 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 07:47:55,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:55,614 INFO L93 Difference]: Finished difference Result 3892 states and 5231 transitions. [2025-02-08 07:47:55,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:47:55,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2025-02-08 07:47:55,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:55,617 INFO L225 Difference]: With dead ends: 3892 [2025-02-08 07:47:55,617 INFO L226 Difference]: Without dead ends: 3892 [2025-02-08 07:47:55,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 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 07:47:55,618 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 3414 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:55,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3424 Valid, 1643 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-02-08 07:47:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2025-02-08 07:47:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3779. [2025-02-08 07:47:55,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3779 states, 3007 states have (on average 1.651812437645494) internal successors, (4967), 3749 states have internal predecessors, (4967), 30 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-02-08 07:47:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 5023 transitions. [2025-02-08 07:47:55,644 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 5023 transitions. Word has length 63 [2025-02-08 07:47:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:55,644 INFO L471 AbstractCegarLoop]: Abstraction has 3779 states and 5023 transitions. [2025-02-08 07:47:55,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 07:47:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 5023 transitions. [2025-02-08 07:47:55,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-08 07:47:55,645 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:55,645 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:47:55,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 07:47:55,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:55,846 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr984REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:47:55,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:55,847 INFO L85 PathProgramCache]: Analyzing trace with hash 159276016, now seen corresponding path program 1 times [2025-02-08 07:47:55,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:55,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877639305] [2025-02-08 07:47:55,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:55,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:55,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:55,850 INFO L229 MonitoredProcess]: Starting monitored process 23 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 07:47:55,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 07:47:56,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-08 07:47:56,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-08 07:47:56,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:56,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:56,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:47:56,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:56,102 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 07:47:56,115 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 07:47:56,131 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 07:47:56,139 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 07:47:56,139 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:56,139 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:56,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877639305] [2025-02-08 07:47:56,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877639305] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:56,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:56,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:47:56,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831912884] [2025-02-08 07:47:56,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:56,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:47:56,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:56,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:47:56,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:47:56,140 INFO L87 Difference]: Start difference. First operand 3779 states and 5023 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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)