./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:18:58,436 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:18:58,488 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:18:58,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:18:58,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:18:58,517 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:18:58,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:18:58,518 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:18:58,518 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:18:58,518 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:18:58,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:18:58,519 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:18:58,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:18:58,519 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:18:58,519 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:18:58,520 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:18:58,520 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:18:58,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:18:58,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:18:58,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:18:58,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:18:58,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:18:58,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:18:58,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:18:58,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:18:58,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:18:58,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:18:58,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:18:58,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:18:58,521 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 -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2025-01-10 00:18:58,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:18:58,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:18:58,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:18:58,773 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:18:58,773 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:18:58,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i [2025-01-10 00:19:00,667 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0abb77c29/e4b45bb4baab4e5c8575628a7d882681/FLAG69993a636 [2025-01-10 00:19:00,958 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:19:00,958 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i [2025-01-10 00:19:00,971 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0abb77c29/e4b45bb4baab4e5c8575628a7d882681/FLAG69993a636 [2025-01-10 00:19:01,234 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0abb77c29/e4b45bb4baab4e5c8575628a7d882681 [2025-01-10 00:19:01,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:19:01,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:19:01,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:19:01,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:19:01,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:19:01,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:01" (1/1) ... [2025-01-10 00:19:01,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c621b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:01, skipping insertion in model container [2025-01-10 00:19:01,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:01" (1/1) ... [2025-01-10 00:19:01,277 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:19:01,527 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,549 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,553 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,559 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,566 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,599 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,600 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,601 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,601 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,603 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,604 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,605 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,606 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,608 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:01,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:19:01,632 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-01-10 00:19:01,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d21a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:01, skipping insertion in model container [2025-01-10 00:19:01,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:19:01,633 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-10 00:19:01,634 INFO L158 Benchmark]: Toolchain (without parser) took 396.89ms. Allocated memory is still 142.6MB. Free memory was 109.6MB in the beginning and 90.5MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:19:01,634 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 226.5MB. Free memory is still 141.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:19:01,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.85ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 90.5MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:19:01,635 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 226.5MB. Free memory is still 141.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.85ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 90.5MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 750]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:19:03,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:19:03,512 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 00:19:03,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:19:03,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:19:03,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:19:03,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:19:03,551 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:19:03,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:19:03,551 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:19:03,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:19:03,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:19:03,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:19:03,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 00:19:03,552 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:19:03,553 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:19:03,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:19:03,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 00:19:03,553 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 00:19:03,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:19:03,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:19:03,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:19:03,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:19:03,554 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 -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2025-01-10 00:19:03,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:19:03,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:19:03,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:19:03,862 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:19:03,863 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:19:03,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i [2025-01-10 00:19:05,045 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8b306bcfa/ed4500d47c1b4f13933bb153c4331aff/FLAGfdadd0914 [2025-01-10 00:19:05,309 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:19:05,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i [2025-01-10 00:19:05,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8b306bcfa/ed4500d47c1b4f13933bb153c4331aff/FLAGfdadd0914 [2025-01-10 00:19:05,344 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8b306bcfa/ed4500d47c1b4f13933bb153c4331aff [2025-01-10 00:19:05,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:19:05,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:19:05,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:19:05,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:19:05,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:19:05,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:05" (1/1) ... [2025-01-10 00:19:05,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729612d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:05, skipping insertion in model container [2025-01-10 00:19:05,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:05" (1/1) ... [2025-01-10 00:19:05,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:19:05,749 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,781 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,784 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,787 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,795 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,828 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,829 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,831 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,832 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,834 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,837 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,838 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,842 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,846 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:19:05,864 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-10 00:19:05,877 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:19:05,893 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,908 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,910 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,915 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,921 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,952 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,952 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,953 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,957 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,958 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,959 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,960 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,961 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,964 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:19:05,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:19:05,975 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:19:06,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:19:06,082 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:19:06,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06 WrapperNode [2025-01-10 00:19:06,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:19:06,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:19:06,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:19:06,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:19:06,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,153 INFO L138 Inliner]: procedures = 180, calls = 274, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1005 [2025-01-10 00:19:06,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:19:06,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:19:06,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:19:06,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:19:06,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,204 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-01-10 00:19:06,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,226 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:19:06,252 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:19:06,252 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:19:06,252 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:19:06,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (1/1) ... [2025-01-10 00:19:06,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:19:06,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:06,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 00:19:06,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 00:19:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-01-10 00:19:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-01-10 00:19:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-01-10 00:19:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-10 00:19:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-01-10 00:19:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-01-10 00:19:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-10 00:19:06,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-10 00:19:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-01-10 00:19:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-01-10 00:19:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-01-10 00:19:06,313 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-01-10 00:19:06,314 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-01-10 00:19:06,314 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-01-10 00:19:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:19:06,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:19:06,484 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:19:06,485 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:19:06,487 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:19:06,534 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:19:06,553 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:19:09,167 INFO L? ?]: Removed 1080 outVars from TransFormulas that were not future-live. [2025-01-10 00:19:09,167 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:19:09,197 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:19:09,197 INFO L312 CfgBuilder]: Removed 31 assume(true) statements. [2025-01-10 00:19:09,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:09 BoogieIcfgContainer [2025-01-10 00:19:09,198 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:19:09,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:19:09,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:19:09,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:19:09,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:19:05" (1/3) ... [2025-01-10 00:19:09,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e08744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:19:09, skipping insertion in model container [2025-01-10 00:19:09,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:06" (2/3) ... [2025-01-10 00:19:09,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e08744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:19:09, skipping insertion in model container [2025-01-10 00:19:09,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:09" (3/3) ... [2025-01-10 00:19:09,204 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test3-1.i [2025-01-10 00:19:09,213 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:19:09,214 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_nondet_test3-1.i that has 5 procedures, 1066 locations, 1 initial locations, 38 loop locations, and 525 error locations. [2025-01-10 00:19:09,260 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:19:09,269 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;@3741f933, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:19:09,270 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2025-01-10 00:19:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 1056 states, 526 states have (on average 2.220532319391635) internal successors, (1168), 1049 states have internal predecessors, (1168), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-10 00:19:09,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-01-10 00:19:09,280 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:09,281 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-01-10 00:19:09,281 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr523ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:09,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1758406, now seen corresponding path program 1 times [2025-01-10 00:19:09,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:09,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765505959] [2025-01-10 00:19:09,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:09,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:09,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:09,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:09,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 00:19:09,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 00:19:09,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 00:19:09,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:09,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:09,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:19:09,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:09,491 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2025-01-10 00:19:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:09,495 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:09,496 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:09,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765505959] [2025-01-10 00:19:09,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765505959] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:09,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:09,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:19:09,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429642982] [2025-01-10 00:19:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:09,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:09,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:09,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:09,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-01-10 00:19:09,518 INFO L87 Difference]: Start difference. First operand has 1056 states, 526 states have (on average 2.220532319391635) internal successors, (1168), 1049 states have internal predecessors, (1168), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:11,016 INFO L93 Difference]: Finished difference Result 1442 states and 1545 transitions. [2025-01-10 00:19:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:19:11,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-01-10 00:19:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:11,037 INFO L225 Difference]: With dead ends: 1442 [2025-01-10 00:19:11,038 INFO L226 Difference]: Without dead ends: 1439 [2025-01-10 00:19:11,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-01-10 00:19:11,042 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 422 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1546 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:11,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1479 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 747 Invalid, 0 Unknown, 1546 Unchecked, 1.4s Time] [2025-01-10 00:19:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2025-01-10 00:19:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1044. [2025-01-10 00:19:11,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 520 states have (on average 2.098076923076923) internal successors, (1091), 1037 states have internal predecessors, (1091), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-10 00:19:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1101 transitions. [2025-01-10 00:19:11,135 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1101 transitions. Word has length 4 [2025-01-10 00:19:11,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:11,135 INFO L471 AbstractCegarLoop]: Abstraction has 1044 states and 1101 transitions. [2025-01-10 00:19:11,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1101 transitions. [2025-01-10 00:19:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-01-10 00:19:11,136 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:11,136 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-01-10 00:19:11,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 00:19:11,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:11,337 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:11,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:11,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2025-01-10 00:19:11,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:11,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606214489] [2025-01-10 00:19:11,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:11,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:11,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:11,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:11,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 00:19:11,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 00:19:11,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 00:19:11,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:11,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:11,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:19:11,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:11,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:19:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:11,447 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:11,448 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:11,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606214489] [2025-01-10 00:19:11,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606214489] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:11,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:11,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:19:11,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056912962] [2025-01-10 00:19:11,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:11,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:19:11,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:11,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:19:11,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:19:11,449 INFO L87 Difference]: Start difference. First operand 1044 states and 1101 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:12,398 INFO L93 Difference]: Finished difference Result 1051 states and 1110 transitions. [2025-01-10 00:19:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:19:12,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-01-10 00:19:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:12,402 INFO L225 Difference]: With dead ends: 1051 [2025-01-10 00:19:12,402 INFO L226 Difference]: Without dead ends: 1051 [2025-01-10 00:19:12,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:19:12,402 INFO L435 NwaCegarLoop]: 627 mSDtfsCounter, 961 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:12,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 688 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-10 00:19:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2025-01-10 00:19:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1043. [2025-01-10 00:19:12,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 529 states have (on average 2.064272211720227) internal successors, (1092), 1035 states have internal predecessors, (1092), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-10 00:19:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1102 transitions. [2025-01-10 00:19:12,417 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1102 transitions. Word has length 4 [2025-01-10 00:19:12,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:12,417 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1102 transitions. [2025-01-10 00:19:12,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1102 transitions. [2025-01-10 00:19:12,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-01-10 00:19:12,417 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:12,417 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-01-10 00:19:12,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 00:19:12,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:12,618 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:12,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:12,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2025-01-10 00:19:12,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:12,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955813571] [2025-01-10 00:19:12,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:12,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:12,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:12,621 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:12,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 00:19:12,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 00:19:12,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 00:19:12,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:12,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:12,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:19:12,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:12,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:19:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:12,745 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:12,745 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:12,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955813571] [2025-01-10 00:19:12,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955813571] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:12,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:12,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:19:12,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639716310] [2025-01-10 00:19:12,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:12,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:19:12,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:12,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:19:12,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:19:12,746 INFO L87 Difference]: Start difference. First operand 1043 states and 1102 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:14,451 INFO L93 Difference]: Finished difference Result 1447 states and 1540 transitions. [2025-01-10 00:19:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:19:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-01-10 00:19:14,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:14,458 INFO L225 Difference]: With dead ends: 1447 [2025-01-10 00:19:14,459 INFO L226 Difference]: Without dead ends: 1447 [2025-01-10 00:19:14,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:19:14,459 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 432 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:14,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1473 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-01-10 00:19:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2025-01-10 00:19:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1252. [2025-01-10 00:19:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 738 states have (on average 2.051490514905149) internal successors, (1514), 1243 states have internal predecessors, (1514), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 00:19:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1526 transitions. [2025-01-10 00:19:14,477 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1526 transitions. Word has length 4 [2025-01-10 00:19:14,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:14,478 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1526 transitions. [2025-01-10 00:19:14,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:14,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1526 transitions. [2025-01-10 00:19:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-10 00:19:14,478 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:14,478 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:14,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 00:19:14,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:14,680 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:14,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1599592659, now seen corresponding path program 1 times [2025-01-10 00:19:14,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:14,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899690450] [2025-01-10 00:19:14,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:14,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:14,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:14,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:14,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 00:19:14,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:19:14,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:19:14,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:14,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:14,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 00:19:14,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:14,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:19:14,838 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-01-10 00:19:14,838 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 [2025-01-10 00:19:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:14,898 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:14,899 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:14,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899690450] [2025-01-10 00:19:14,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899690450] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:14,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:14,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:19:14,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055068217] [2025-01-10 00:19:14,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:14,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:14,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:14,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:14,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:14,902 INFO L87 Difference]: Start difference. First operand 1252 states and 1526 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:17,867 INFO L93 Difference]: Finished difference Result 2136 states and 2279 transitions. [2025-01-10 00:19:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:19:17,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-01-10 00:19:17,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:17,873 INFO L225 Difference]: With dead ends: 2136 [2025-01-10 00:19:17,873 INFO L226 Difference]: Without dead ends: 2136 [2025-01-10 00:19:17,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:17,874 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 1157 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:17,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 2155 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-01-10 00:19:17,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2025-01-10 00:19:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 1400. [2025-01-10 00:19:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 886 states have (on average 2.0316027088036117) internal successors, (1800), 1391 states have internal predecessors, (1800), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 00:19:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1812 transitions. [2025-01-10 00:19:17,896 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1812 transitions. Word has length 9 [2025-01-10 00:19:17,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:17,896 INFO L471 AbstractCegarLoop]: Abstraction has 1400 states and 1812 transitions. [2025-01-10 00:19:17,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-01-10 00:19:17,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1812 transitions. [2025-01-10 00:19:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-10 00:19:17,897 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:17,897 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:17,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 00:19:18,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:18,098 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:18,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:18,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235122, now seen corresponding path program 1 times [2025-01-10 00:19:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:18,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381091983] [2025-01-10 00:19:18,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:18,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:18,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:18,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:18,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 00:19:18,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 00:19:18,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 00:19:18,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:18,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:18,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:19:18,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:18,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:19:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:18,207 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:18,207 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:18,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381091983] [2025-01-10 00:19:18,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381091983] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:18,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:18,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:19:18,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540085409] [2025-01-10 00:19:18,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:18,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:19:18,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:18,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:19:18,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:19:18,208 INFO L87 Difference]: Start difference. First operand 1400 states and 1812 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:19,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:19,335 INFO L93 Difference]: Finished difference Result 1943 states and 2583 transitions. [2025-01-10 00:19:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:19:19,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-10 00:19:19,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:19,340 INFO L225 Difference]: With dead ends: 1943 [2025-01-10 00:19:19,340 INFO L226 Difference]: Without dead ends: 1943 [2025-01-10 00:19:19,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:19:19,340 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 938 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:19,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 1214 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-10 00:19:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2025-01-10 00:19:19,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1352. [2025-01-10 00:19:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 886 states have (on average 1.9650112866817155) internal successors, (1741), 1343 states have internal predecessors, (1741), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 00:19:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1753 transitions. [2025-01-10 00:19:19,361 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1753 transitions. Word has length 10 [2025-01-10 00:19:19,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:19,362 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 1753 transitions. [2025-01-10 00:19:19,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:19,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1753 transitions. [2025-01-10 00:19:19,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-10 00:19:19,362 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:19,362 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:19,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 00:19:19,563 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 [2025-01-10 00:19:19,563 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:19,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235123, now seen corresponding path program 1 times [2025-01-10 00:19:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:19,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835857414] [2025-01-10 00:19:19,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:19,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:19,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:19,565 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) [2025-01-10 00:19:19,566 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 [2025-01-10 00:19:19,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 00:19:19,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 00:19:19,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:19,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:19,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:19:19,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:19,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:19:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:19,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:19,693 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835857414] [2025-01-10 00:19:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835857414] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:19,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:19,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:19:19,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332237697] [2025-01-10 00:19:19,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:19,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:19:19,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:19,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:19:19,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:19:19,694 INFO L87 Difference]: Start difference. First operand 1352 states and 1753 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:21,211 INFO L93 Difference]: Finished difference Result 2043 states and 2683 transitions. [2025-01-10 00:19:21,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:19:21,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-10 00:19:21,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:21,216 INFO L225 Difference]: With dead ends: 2043 [2025-01-10 00:19:21,216 INFO L226 Difference]: Without dead ends: 2043 [2025-01-10 00:19:21,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:19:21,216 INFO L435 NwaCegarLoop]: 1148 mSDtfsCounter, 701 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:21,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1571 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-10 00:19:21,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2025-01-10 00:19:21,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1379. [2025-01-10 00:19:21,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 923 states have (on average 1.943661971830986) internal successors, (1794), 1370 states have internal predecessors, (1794), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 00:19:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1806 transitions. [2025-01-10 00:19:21,235 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1806 transitions. Word has length 10 [2025-01-10 00:19:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:21,235 INFO L471 AbstractCegarLoop]: Abstraction has 1379 states and 1806 transitions. [2025-01-10 00:19:21,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1806 transitions. [2025-01-10 00:19:21,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-10 00:19:21,236 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:21,236 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:21,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 00:19:21,436 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 [2025-01-10 00:19:21,436 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr523ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:21,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:21,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1770181828, now seen corresponding path program 1 times [2025-01-10 00:19:21,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:21,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104064432] [2025-01-10 00:19:21,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:21,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:21,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:21,439 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:21,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 00:19:21,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 00:19:21,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 00:19:21,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:21,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:21,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:19:21,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:21,616 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_47| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47|)))) is different from true [2025-01-10 00:19:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:21,616 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:21,616 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:21,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104064432] [2025-01-10 00:19:21,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104064432] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:21,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:21,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:19:21,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133238206] [2025-01-10 00:19:21,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:21,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:21,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:21,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:21,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-01-10 00:19:21,617 INFO L87 Difference]: Start difference. First operand 1379 states and 1806 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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) [2025-01-10 00:19:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:22,877 INFO L93 Difference]: Finished difference Result 1774 states and 2233 transitions. [2025-01-10 00:19:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:19:22,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 [2025-01-10 00:19:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:22,881 INFO L225 Difference]: With dead ends: 1774 [2025-01-10 00:19:22,881 INFO L226 Difference]: Without dead ends: 1773 [2025-01-10 00:19:22,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-01-10 00:19:22,883 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 413 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1458 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:22,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1408 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 666 Invalid, 0 Unknown, 1458 Unchecked, 1.2s Time] [2025-01-10 00:19:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2025-01-10 00:19:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1510. [2025-01-10 00:19:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1052 states have (on average 1.929657794676806) internal successors, (2030), 1499 states have internal predecessors, (2030), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-10 00:19:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2046 transitions. [2025-01-10 00:19:22,904 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 2046 transitions. Word has length 12 [2025-01-10 00:19:22,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:22,904 INFO L471 AbstractCegarLoop]: Abstraction has 1510 states and 2046 transitions. [2025-01-10 00:19:22,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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) [2025-01-10 00:19:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 2046 transitions. [2025-01-10 00:19:22,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-10 00:19:22,905 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:22,905 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:22,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 00:19:23,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:23,106 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:23,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:23,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1770181476, now seen corresponding path program 1 times [2025-01-10 00:19:23,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:23,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656241212] [2025-01-10 00:19:23,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:23,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:23,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:23,108 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:23,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 00:19:23,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 00:19:23,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 00:19:23,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:23,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:23,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:19:23,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:23,286 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:23,286 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:23,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656241212] [2025-01-10 00:19:23,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656241212] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:23,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:23,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:19:23,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017992549] [2025-01-10 00:19:23,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:23,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:23,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:23,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:23,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:23,287 INFO L87 Difference]: Start difference. First operand 1510 states and 2046 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) [2025-01-10 00:19:23,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:23,682 INFO L93 Difference]: Finished difference Result 1906 states and 2501 transitions. [2025-01-10 00:19:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:19:23,682 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 [2025-01-10 00:19:23,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:23,687 INFO L225 Difference]: With dead ends: 1906 [2025-01-10 00:19:23,687 INFO L226 Difference]: Without dead ends: 1904 [2025-01-10 00:19:23,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:23,687 INFO L435 NwaCegarLoop]: 1101 mSDtfsCounter, 451 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:23,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 3048 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 00:19:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2025-01-10 00:19:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1714. [2025-01-10 00:19:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1255 states have (on average 1.946613545816733) internal successors, (2443), 1702 states have internal predecessors, (2443), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:19:23,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2461 transitions. [2025-01-10 00:19:23,708 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2461 transitions. Word has length 12 [2025-01-10 00:19:23,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:23,708 INFO L471 AbstractCegarLoop]: Abstraction has 1714 states and 2461 transitions. [2025-01-10 00:19:23,708 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) [2025-01-10 00:19:23,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2461 transitions. [2025-01-10 00:19:23,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-10 00:19:23,708 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:23,708 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:23,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-10 00:19:23,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:23,909 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:23,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:23,909 INFO L85 PathProgramCache]: Analyzing trace with hash -373553892, now seen corresponding path program 1 times [2025-01-10 00:19:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:23,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743700726] [2025-01-10 00:19:23,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:23,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:23,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:23,911 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:23,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 00:19:23,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 00:19:24,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 00:19:24,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:24,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:24,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:19:24,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:24,043 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:24,044 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:24,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743700726] [2025-01-10 00:19:24,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743700726] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:24,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:24,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:19:24,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241991284] [2025-01-10 00:19:24,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:24,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:24,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:24,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:24,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:24,045 INFO L87 Difference]: Start difference. First operand 1714 states and 2461 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-01-10 00:19:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:25,225 INFO L93 Difference]: Finished difference Result 1724 states and 2382 transitions. [2025-01-10 00:19:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:19:25,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2025-01-10 00:19:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:25,229 INFO L225 Difference]: With dead ends: 1724 [2025-01-10 00:19:25,229 INFO L226 Difference]: Without dead ends: 1724 [2025-01-10 00:19:25,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:19:25,230 INFO L435 NwaCegarLoop]: 584 mSDtfsCounter, 959 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:25,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1125 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-10 00:19:25,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2025-01-10 00:19:25,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1691. [2025-01-10 00:19:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1255 states have (on average 1.854980079681275) internal successors, (2328), 1679 states have internal predecessors, (2328), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:19:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2346 transitions. [2025-01-10 00:19:25,252 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2346 transitions. Word has length 14 [2025-01-10 00:19:25,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:25,252 INFO L471 AbstractCegarLoop]: Abstraction has 1691 states and 2346 transitions. [2025-01-10 00:19:25,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-01-10 00:19:25,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2346 transitions. [2025-01-10 00:19:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-10 00:19:25,252 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:25,253 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:25,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 00:19:25,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:25,457 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:25,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:25,457 INFO L85 PathProgramCache]: Analyzing trace with hash -373553891, now seen corresponding path program 1 times [2025-01-10 00:19:25,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:25,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197558518] [2025-01-10 00:19:25,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:25,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:25,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:25,459 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:25,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 00:19:25,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 00:19:25,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 00:19:25,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:25,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:25,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:19:25,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:25,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:19:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:25,623 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:25,624 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:25,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197558518] [2025-01-10 00:19:25,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197558518] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:25,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:25,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:19:25,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944713247] [2025-01-10 00:19:25,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:25,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:25,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:25,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:25,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:25,624 INFO L87 Difference]: Start difference. First operand 1691 states and 2346 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-01-10 00:19:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:27,482 INFO L93 Difference]: Finished difference Result 1803 states and 2246 transitions. [2025-01-10 00:19:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:19:27,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2025-01-10 00:19:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:27,487 INFO L225 Difference]: With dead ends: 1803 [2025-01-10 00:19:27,487 INFO L226 Difference]: Without dead ends: 1803 [2025-01-10 00:19:27,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:19:27,487 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 409 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:27,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1851 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-01-10 00:19:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2025-01-10 00:19:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1608. [2025-01-10 00:19:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1172 states have (on average 1.8566552901023892) internal successors, (2176), 1596 states have internal predecessors, (2176), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:19:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2194 transitions. [2025-01-10 00:19:27,504 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2194 transitions. Word has length 14 [2025-01-10 00:19:27,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:27,504 INFO L471 AbstractCegarLoop]: Abstraction has 1608 states and 2194 transitions. [2025-01-10 00:19:27,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-01-10 00:19:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2194 transitions. [2025-01-10 00:19:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-10 00:19:27,505 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:27,505 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:27,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 00:19:27,705 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 [2025-01-10 00:19:27,706 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:27,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:27,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1304786864, now seen corresponding path program 1 times [2025-01-10 00:19:27,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:27,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031902039] [2025-01-10 00:19:27,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:27,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:27,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:27,708 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) [2025-01-10 00:19:27,709 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 [2025-01-10 00:19:27,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:19:27,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:19:27,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:27,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:27,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:19:27,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:27,812 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:27,812 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:27,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031902039] [2025-01-10 00:19:27,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031902039] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:27,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:27,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:19:27,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438695928] [2025-01-10 00:19:27,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:27,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:27,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:27,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:27,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:27,820 INFO L87 Difference]: Start difference. First operand 1608 states and 2194 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:27,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:27,868 INFO L93 Difference]: Finished difference Result 1542 states and 2069 transitions. [2025-01-10 00:19:27,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:19:27,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-01-10 00:19:27,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:27,876 INFO L225 Difference]: With dead ends: 1542 [2025-01-10 00:19:27,876 INFO L226 Difference]: Without dead ends: 1542 [2025-01-10 00:19:27,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:19:27,877 INFO L435 NwaCegarLoop]: 929 mSDtfsCounter, 45 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:27,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2764 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:19:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2025-01-10 00:19:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2025-01-10 00:19:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1125 states have (on average 1.8231111111111111) internal successors, (2051), 1530 states have internal predecessors, (2051), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:19:27,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2069 transitions. [2025-01-10 00:19:27,895 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2069 transitions. Word has length 15 [2025-01-10 00:19:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:27,895 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 2069 transitions. [2025-01-10 00:19:27,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2069 transitions. [2025-01-10 00:19:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-10 00:19:27,896 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:27,896 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] [2025-01-10 00:19:27,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 00:19:28,096 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 [2025-01-10 00:19:28,097 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:28,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:28,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969598, now seen corresponding path program 1 times [2025-01-10 00:19:28,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:28,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265558738] [2025-01-10 00:19:28,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:28,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:28,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:28,099 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:28,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 00:19:28,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 00:19:28,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 00:19:28,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:28,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:28,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:19:28,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:28,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:19:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:28,244 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:28,244 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:28,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265558738] [2025-01-10 00:19:28,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265558738] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:28,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:28,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:19:28,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341121187] [2025-01-10 00:19:28,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:28,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:28,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:28,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:28,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:28,245 INFO L87 Difference]: Start difference. First operand 1542 states and 2069 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) [2025-01-10 00:19:29,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:29,700 INFO L93 Difference]: Finished difference Result 1975 states and 2610 transitions. [2025-01-10 00:19:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:19:29,700 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 [2025-01-10 00:19:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:29,704 INFO L225 Difference]: With dead ends: 1975 [2025-01-10 00:19:29,705 INFO L226 Difference]: Without dead ends: 1975 [2025-01-10 00:19:29,705 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 [2025-01-10 00:19:29,705 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 902 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:29,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1620 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-10 00:19:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2025-01-10 00:19:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1519. [2025-01-10 00:19:29,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1125 states have (on average 1.7822222222222222) internal successors, (2005), 1507 states have internal predecessors, (2005), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:19:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2023 transitions. [2025-01-10 00:19:29,720 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2023 transitions. Word has length 20 [2025-01-10 00:19:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:29,721 INFO L471 AbstractCegarLoop]: Abstraction has 1519 states and 2023 transitions. [2025-01-10 00:19:29,721 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) [2025-01-10 00:19:29,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2023 transitions. [2025-01-10 00:19:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-10 00:19:29,722 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:29,722 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] [2025-01-10 00:19:29,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-10 00:19:29,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:29,923 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:29,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:29,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969599, now seen corresponding path program 1 times [2025-01-10 00:19:29,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:29,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499094758] [2025-01-10 00:19:29,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:29,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:29,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:29,925 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:29,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 00:19:30,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 00:19:30,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 00:19:30,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:30,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:30,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:19:30,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:30,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:19:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:30,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:30,117 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:30,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499094758] [2025-01-10 00:19:30,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499094758] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:30,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:30,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:19:30,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585788089] [2025-01-10 00:19:30,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:30,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:30,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:30,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:30,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:30,119 INFO L87 Difference]: Start difference. First operand 1519 states and 2023 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) [2025-01-10 00:19:32,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:32,027 INFO L93 Difference]: Finished difference Result 2166 states and 2795 transitions. [2025-01-10 00:19:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:19:32,027 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 [2025-01-10 00:19:32,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:32,032 INFO L225 Difference]: With dead ends: 2166 [2025-01-10 00:19:32,032 INFO L226 Difference]: Without dead ends: 2166 [2025-01-10 00:19:32,032 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 [2025-01-10 00:19:32,032 INFO L435 NwaCegarLoop]: 1088 mSDtfsCounter, 738 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:32,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 2174 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-01-10 00:19:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2025-01-10 00:19:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1633. [2025-01-10 00:19:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1239 states have (on average 1.7296206618240517) internal successors, (2143), 1621 states have internal predecessors, (2143), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:19:32,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2161 transitions. [2025-01-10 00:19:32,045 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2161 transitions. Word has length 20 [2025-01-10 00:19:32,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:32,046 INFO L471 AbstractCegarLoop]: Abstraction has 1633 states and 2161 transitions. [2025-01-10 00:19:32,046 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) [2025-01-10 00:19:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2161 transitions. [2025-01-10 00:19:32,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-10 00:19:32,046 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:32,047 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] [2025-01-10 00:19:32,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 00:19:32,247 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 [2025-01-10 00:19:32,247 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:32,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:32,248 INFO L85 PathProgramCache]: Analyzing trace with hash 571964667, now seen corresponding path program 1 times [2025-01-10 00:19:32,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:32,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211279129] [2025-01-10 00:19:32,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:32,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:32,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:32,254 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) [2025-01-10 00:19:32,255 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 [2025-01-10 00:19:32,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-10 00:19:32,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-10 00:19:32,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:32,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:32,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:19:32,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:32,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:19:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:32,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:19:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:32,908 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:32,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211279129] [2025-01-10 00:19:32,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211279129] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:19:32,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:19:32,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-01-10 00:19:32,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978835723] [2025-01-10 00:19:32,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:19:32,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:19:32,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:32,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:19:32,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:19:32,909 INFO L87 Difference]: Start difference. First operand 1633 states and 2161 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2025-01-10 00:19:39,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:39,324 INFO L93 Difference]: Finished difference Result 2522 states and 3285 transitions. [2025-01-10 00:19:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:19:39,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 [2025-01-10 00:19:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:39,329 INFO L225 Difference]: With dead ends: 2522 [2025-01-10 00:19:39,329 INFO L226 Difference]: Without dead ends: 2522 [2025-01-10 00:19:39,330 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 [2025-01-10 00:19:39,330 INFO L435 NwaCegarLoop]: 1115 mSDtfsCounter, 2156 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 3366 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 4313 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:39,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 4313 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3366 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2025-01-10 00:19:39,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2025-01-10 00:19:39,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 1797. [2025-01-10 00:19:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1403 states have (on average 1.6928011404133998) internal successors, (2375), 1785 states have internal predecessors, (2375), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:19:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2393 transitions. [2025-01-10 00:19:39,346 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2393 transitions. Word has length 39 [2025-01-10 00:19:39,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:39,346 INFO L471 AbstractCegarLoop]: Abstraction has 1797 states and 2393 transitions. [2025-01-10 00:19:39,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2025-01-10 00:19:39,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2393 transitions. [2025-01-10 00:19:39,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-01-10 00:19:39,350 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:39,350 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] [2025-01-10 00:19:39,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 00:19:39,550 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 [2025-01-10 00:19:39,550 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr414REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:39,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:39,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2128691291, now seen corresponding path program 1 times [2025-01-10 00:19:39,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:39,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989821884] [2025-01-10 00:19:39,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:39,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:39,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:39,553 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:39,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 00:19:39,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-01-10 00:19:39,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-01-10 00:19:39,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:39,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:39,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:19:39,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:39,694 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:39,694 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:39,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989821884] [2025-01-10 00:19:39,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989821884] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:39,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:39,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:19:39,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8024479] [2025-01-10 00:19:39,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:39,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:19:39,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:39,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:19:39,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:19:39,695 INFO L87 Difference]: Start difference. First operand 1797 states and 2393 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2025-01-10 00:19:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:39,755 INFO L93 Difference]: Finished difference Result 1593 states and 1852 transitions. [2025-01-10 00:19:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:19:39,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2025-01-10 00:19:39,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:39,758 INFO L225 Difference]: With dead ends: 1593 [2025-01-10 00:19:39,758 INFO L226 Difference]: Without dead ends: 1593 [2025-01-10 00:19:39,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:19:39,759 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 106 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:39,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1851 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:19:39,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2025-01-10 00:19:39,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1424. [2025-01-10 00:19:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1032 states have (on average 1.5978682170542635) internal successors, (1649), 1414 states have internal predecessors, (1649), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-01-10 00:19:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1663 transitions. [2025-01-10 00:19:39,770 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1663 transitions. Word has length 48 [2025-01-10 00:19:39,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:39,771 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 1663 transitions. [2025-01-10 00:19:39,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2025-01-10 00:19:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1663 transitions. [2025-01-10 00:19:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-10 00:19:39,775 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:39,775 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] [2025-01-10 00:19:39,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 00:19:39,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:39,975 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:39,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:39,976 INFO L85 PathProgramCache]: Analyzing trace with hash 68361595, now seen corresponding path program 1 times [2025-01-10 00:19:39,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:39,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723081417] [2025-01-10 00:19:39,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:39,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:39,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:39,978 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:39,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-10 00:19:40,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-10 00:19:40,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-10 00:19:40,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:40,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:40,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:19:40,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:40,148 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:40,148 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:40,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723081417] [2025-01-10 00:19:40,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723081417] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:40,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:40,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:19:40,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890116734] [2025-01-10 00:19:40,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:40,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:40,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:40,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:40,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:40,149 INFO L87 Difference]: Start difference. First operand 1424 states and 1663 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:40,180 INFO L93 Difference]: Finished difference Result 1406 states and 1633 transitions. [2025-01-10 00:19:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:19:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-01-10 00:19:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:40,183 INFO L225 Difference]: With dead ends: 1406 [2025-01-10 00:19:40,183 INFO L226 Difference]: Without dead ends: 1406 [2025-01-10 00:19:40,183 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 [2025-01-10 00:19:40,184 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 27 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2687 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 [2025-01-10 00:19:40,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2687 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:19:40,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2025-01-10 00:19:40,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1406. [2025-01-10 00:19:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1014 states have (on average 1.596646942800789) internal successors, (1619), 1396 states have internal predecessors, (1619), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-01-10 00:19:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 1633 transitions. [2025-01-10 00:19:40,196 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 1633 transitions. Word has length 51 [2025-01-10 00:19:40,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:40,196 INFO L471 AbstractCegarLoop]: Abstraction has 1406 states and 1633 transitions. [2025-01-10 00:19:40,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 1633 transitions. [2025-01-10 00:19:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-01-10 00:19:40,197 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:40,197 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:40,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-10 00:19:40,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:40,397 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:40,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1618843039, now seen corresponding path program 1 times [2025-01-10 00:19:40,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:40,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745985392] [2025-01-10 00:19:40,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:40,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:40,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:40,400 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:40,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-10 00:19:40,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-01-10 00:19:40,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-01-10 00:19:40,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:40,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:40,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:19:40,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:40,570 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:40,570 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:40,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745985392] [2025-01-10 00:19:40,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745985392] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:40,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:40,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:19:40,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618326307] [2025-01-10 00:19:40,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:40,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:40,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:40,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:40,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:40,570 INFO L87 Difference]: Start difference. First operand 1406 states and 1633 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:40,619 INFO L93 Difference]: Finished difference Result 1095 states and 1197 transitions. [2025-01-10 00:19:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:19:40,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2025-01-10 00:19:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:40,621 INFO L225 Difference]: With dead ends: 1095 [2025-01-10 00:19:40,621 INFO L226 Difference]: Without dead ends: 1095 [2025-01-10 00:19:40,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:19:40,621 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 56 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:40,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2513 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:19:40,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2025-01-10 00:19:40,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1093. [2025-01-10 00:19:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 724 states have (on average 1.6312154696132597) internal successors, (1181), 1083 states have internal predecessors, (1181), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-01-10 00:19:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1195 transitions. [2025-01-10 00:19:40,629 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1195 transitions. Word has length 54 [2025-01-10 00:19:40,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:40,629 INFO L471 AbstractCegarLoop]: Abstraction has 1093 states and 1195 transitions. [2025-01-10 00:19:40,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:40,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1195 transitions. [2025-01-10 00:19:40,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-10 00:19:40,633 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:40,633 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] [2025-01-10 00:19:40,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-10 00:19:40,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:40,834 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:40,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash -173330361, now seen corresponding path program 1 times [2025-01-10 00:19:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:40,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175486775] [2025-01-10 00:19:40,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:40,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:40,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:40,838 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:40,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-10 00:19:40,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-01-10 00:19:40,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-01-10 00:19:40,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:40,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:40,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 00:19:40,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:40,995 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:19:40,995 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:19:40,997 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:19:40,999 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 30 treesize of output 39 [2025-01-10 00:19:41,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:19:41,038 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 70 treesize of output 26 [2025-01-10 00:19:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:41,078 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:41,078 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:41,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175486775] [2025-01-10 00:19:41,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175486775] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:41,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:41,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:19:41,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286157510] [2025-01-10 00:19:41,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:41,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 00:19:41,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:41,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 00:19:41,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:19:41,079 INFO L87 Difference]: Start difference. First operand 1093 states and 1195 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:41,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:41,377 INFO L93 Difference]: Finished difference Result 1760 states and 1909 transitions. [2025-01-10 00:19:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:19:41,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-01-10 00:19:41,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:41,380 INFO L225 Difference]: With dead ends: 1760 [2025-01-10 00:19:41,381 INFO L226 Difference]: Without dead ends: 1757 [2025-01-10 00:19:41,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:19:41,381 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 2415 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:41,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 3312 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 00:19:41,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2025-01-10 00:19:41,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1041. [2025-01-10 00:19:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 673 states have (on average 1.6775631500742942) internal successors, (1129), 1032 states have internal predecessors, (1129), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 00:19:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1141 transitions. [2025-01-10 00:19:41,391 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1141 transitions. Word has length 59 [2025-01-10 00:19:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:41,391 INFO L471 AbstractCegarLoop]: Abstraction has 1041 states and 1141 transitions. [2025-01-10 00:19:41,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:41,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1141 transitions. [2025-01-10 00:19:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-01-10 00:19:41,391 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:41,391 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:41,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-10 00:19:41,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:41,592 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:41,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:41,592 INFO L85 PathProgramCache]: Analyzing trace with hash 592566355, now seen corresponding path program 1 times [2025-01-10 00:19:41,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:41,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364958583] [2025-01-10 00:19:41,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:41,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:41,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:41,594 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:41,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-10 00:19:41,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-01-10 00:19:41,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-01-10 00:19:41,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:41,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:41,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:19:41,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:41,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:19:42,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:19:42,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-10 00:19:42,117 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:19:42,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-10 00:19:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:42,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:42,120 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:42,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364958583] [2025-01-10 00:19:42,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364958583] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:42,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:42,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:19:42,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094590653] [2025-01-10 00:19:42,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:42,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:19:42,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:42,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:19:42,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:19:42,121 INFO L87 Difference]: Start difference. First operand 1041 states and 1141 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:43,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:43,995 INFO L93 Difference]: Finished difference Result 1373 states and 1500 transitions. [2025-01-10 00:19:43,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:19:43,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-01-10 00:19:43,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:43,997 INFO L225 Difference]: With dead ends: 1373 [2025-01-10 00:19:43,997 INFO L226 Difference]: Without dead ends: 1373 [2025-01-10 00:19:43,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:19:43,998 INFO L435 NwaCegarLoop]: 315 mSDtfsCounter, 1129 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:43,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 716 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-01-10 00:19:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2025-01-10 00:19:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 966. [2025-01-10 00:19:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 636 states have (on average 1.599056603773585) internal successors, (1017), 957 states have internal predecessors, (1017), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 00:19:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1029 transitions. [2025-01-10 00:19:44,005 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1029 transitions. Word has length 62 [2025-01-10 00:19:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:44,005 INFO L471 AbstractCegarLoop]: Abstraction has 966 states and 1029 transitions. [2025-01-10 00:19:44,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1029 transitions. [2025-01-10 00:19:44,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-10 00:19:44,005 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:44,005 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:44,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-10 00:19:44,206 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 [2025-01-10 00:19:44,206 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:44,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:44,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2059154974, now seen corresponding path program 1 times [2025-01-10 00:19:44,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:44,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821026978] [2025-01-10 00:19:44,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:44,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:44,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:44,208 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) [2025-01-10 00:19:44,210 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 [2025-01-10 00:19:44,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-10 00:19:44,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-10 00:19:44,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:44,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:44,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:19:44,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:44,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:19:44,404 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 [2025-01-10 00:19:44,417 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 [2025-01-10 00:19:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:44,423 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:44,423 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:44,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821026978] [2025-01-10 00:19:44,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821026978] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:44,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:44,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:19:44,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796457745] [2025-01-10 00:19:44,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:44,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:19:44,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:44,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:19:44,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:19:44,424 INFO L87 Difference]: Start difference. First operand 966 states and 1029 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:45,659 INFO L93 Difference]: Finished difference Result 965 states and 1028 transitions. [2025-01-10 00:19:45,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:19:45,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-01-10 00:19:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:45,661 INFO L225 Difference]: With dead ends: 965 [2025-01-10 00:19:45,661 INFO L226 Difference]: Without dead ends: 965 [2025-01-10 00:19:45,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:19:45,662 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 2 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:45,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2174 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-10 00:19:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2025-01-10 00:19:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 965. [2025-01-10 00:19:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 636 states have (on average 1.5974842767295598) internal successors, (1016), 956 states have internal predecessors, (1016), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 00:19:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1028 transitions. [2025-01-10 00:19:45,670 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1028 transitions. Word has length 67 [2025-01-10 00:19:45,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:45,670 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 1028 transitions. [2025-01-10 00:19:45,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1028 transitions. [2025-01-10 00:19:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-10 00:19:45,673 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:45,673 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:45,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-10 00:19:45,874 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 [2025-01-10 00:19:45,874 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:45,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:45,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2059154975, now seen corresponding path program 1 times [2025-01-10 00:19:45,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:45,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116755906] [2025-01-10 00:19:45,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:45,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:45,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:45,877 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:45,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-10 00:19:45,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-10 00:19:46,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-10 00:19:46,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:46,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:46,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 00:19:46,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:46,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:19:46,065 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 [2025-01-10 00:19:46,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-01-10 00:19:46,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-01-10 00:19:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:46,110 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:46,110 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:46,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116755906] [2025-01-10 00:19:46,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116755906] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:46,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:46,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:19:46,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686803170] [2025-01-10 00:19:46,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:46,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:19:46,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:46,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:19:46,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:19:46,111 INFO L87 Difference]: Start difference. First operand 965 states and 1028 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:47,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:47,646 INFO L93 Difference]: Finished difference Result 964 states and 1027 transitions. [2025-01-10 00:19:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:19:47,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-01-10 00:19:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:47,648 INFO L225 Difference]: With dead ends: 964 [2025-01-10 00:19:47,648 INFO L226 Difference]: Without dead ends: 964 [2025-01-10 00:19:47,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:19:47,649 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 1 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:47,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2164 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-10 00:19:47,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2025-01-10 00:19:47,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 964. [2025-01-10 00:19:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 635 states have (on average 1.5984251968503937) internal successors, (1015), 955 states have internal predecessors, (1015), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 00:19:47,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1027 transitions. [2025-01-10 00:19:47,656 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1027 transitions. Word has length 67 [2025-01-10 00:19:47,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:47,656 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1027 transitions. [2025-01-10 00:19:47,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:19:47,656 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1027 transitions. [2025-01-10 00:19:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-01-10 00:19:47,657 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:47,657 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:47,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-10 00:19:47,857 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 [2025-01-10 00:19:47,857 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:47,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:47,857 INFO L85 PathProgramCache]: Analyzing trace with hash 420750597, now seen corresponding path program 1 times [2025-01-10 00:19:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:47,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603518976] [2025-01-10 00:19:47,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:47,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:47,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:47,860 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) [2025-01-10 00:19:47,861 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 [2025-01-10 00:19:47,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-01-10 00:19:48,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-01-10 00:19:48,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:48,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:48,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 00:19:48,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:48,045 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 [2025-01-10 00:19:48,100 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 [2025-01-10 00:19:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:48,110 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:48,110 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:48,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603518976] [2025-01-10 00:19:48,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603518976] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:48,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:48,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:19:48,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870568127] [2025-01-10 00:19:48,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:48,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:19:48,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:48,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:19:48,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:19:48,112 INFO L87 Difference]: Start difference. First operand 964 states and 1027 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:19:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:49,963 INFO L93 Difference]: Finished difference Result 976 states and 1042 transitions. [2025-01-10 00:19:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:19:49,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-01-10 00:19:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:49,968 INFO L225 Difference]: With dead ends: 976 [2025-01-10 00:19:49,968 INFO L226 Difference]: Without dead ends: 976 [2025-01-10 00:19:49,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-10 00:19:49,970 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 12 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3446 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:49,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3446 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-01-10 00:19:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2025-01-10 00:19:49,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2025-01-10 00:19:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 640 states have (on average 1.596875) internal successors, (1022), 960 states have internal predecessors, (1022), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2025-01-10 00:19:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1037 transitions. [2025-01-10 00:19:49,980 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1037 transitions. Word has length 75 [2025-01-10 00:19:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:49,980 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1037 transitions. [2025-01-10 00:19:49,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:19:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1037 transitions. [2025-01-10 00:19:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-01-10 00:19:49,981 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:49,981 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:49,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-10 00:19:50,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:50,182 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:50,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:50,182 INFO L85 PathProgramCache]: Analyzing trace with hash 420750598, now seen corresponding path program 1 times [2025-01-10 00:19:50,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:50,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418781630] [2025-01-10 00:19:50,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:50,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:50,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:50,184 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:50,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-10 00:19:50,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-01-10 00:19:50,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-01-10 00:19:50,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:50,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:50,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:19:50,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:50,386 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:19:50,386 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418781630] [2025-01-10 00:19:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418781630] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:19:50,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:19:50,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:19:50,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929431452] [2025-01-10 00:19:50,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:19:50,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:19:50,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:50,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:19:50,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:50,387 INFO L87 Difference]: Start difference. First operand 970 states and 1037 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:19:50,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:50,416 INFO L93 Difference]: Finished difference Result 967 states and 1031 transitions. [2025-01-10 00:19:50,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:19:50,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-01-10 00:19:50,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:50,418 INFO L225 Difference]: With dead ends: 967 [2025-01-10 00:19:50,419 INFO L226 Difference]: Without dead ends: 967 [2025-01-10 00:19:50,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:19:50,420 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 0 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:50,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2497 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:19:50,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2025-01-10 00:19:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 967. [2025-01-10 00:19:50,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 637 states have (on average 1.598116169544741) internal successors, (1018), 958 states have internal predecessors, (1018), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-01-10 00:19:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1031 transitions. [2025-01-10 00:19:50,431 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1031 transitions. Word has length 75 [2025-01-10 00:19:50,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:50,431 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1031 transitions. [2025-01-10 00:19:50,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:19:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1031 transitions. [2025-01-10 00:19:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-01-10 00:19:50,432 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:50,432 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:50,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-01-10 00:19:50,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:50,633 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:50,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:50,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1154992818, now seen corresponding path program 1 times [2025-01-10 00:19:50,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:50,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850188285] [2025-01-10 00:19:50,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:19:50,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:50,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:50,636 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:50,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-10 00:19:50,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-01-10 00:19:50,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-01-10 00:19:50,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:19:50,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:19:50,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:19:50,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:19:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:50,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:19:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:19:50,881 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:19:50,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850188285] [2025-01-10 00:19:50,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850188285] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:19:50,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:19:50,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-01-10 00:19:50,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557887049] [2025-01-10 00:19:50,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:19:50,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:19:50,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:19:50,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:19:50,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:19:50,882 INFO L87 Difference]: Start difference. First operand 967 states and 1031 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:19:50,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:19:50,988 INFO L93 Difference]: Finished difference Result 979 states and 1048 transitions. [2025-01-10 00:19:50,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 00:19:50,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2025-01-10 00:19:50,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:19:50,991 INFO L225 Difference]: With dead ends: 979 [2025-01-10 00:19:50,992 INFO L226 Difference]: Without dead ends: 979 [2025-01-10 00:19:50,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-01-10 00:19:50,992 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 6 mSDsluCounter, 3324 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4158 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:19:50,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4158 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 00:19:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2025-01-10 00:19:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 977. [2025-01-10 00:19:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 646 states have (on average 1.5990712074303406) internal successors, (1033), 967 states have internal predecessors, (1033), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-01-10 00:19:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1046 transitions. [2025-01-10 00:19:51,002 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1046 transitions. Word has length 76 [2025-01-10 00:19:51,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:19:51,002 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1046 transitions. [2025-01-10 00:19:51,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:19:51,002 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1046 transitions. [2025-01-10 00:19:51,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-10 00:19:51,002 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:19:51,003 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:19:51,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-10 00:19:51,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:51,203 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:19:51,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:19:51,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1079596987, now seen corresponding path program 2 times [2025-01-10 00:19:51,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:19:51,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168996255] [2025-01-10 00:19:51,204 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:19:51,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:19:51,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:19:51,206 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:19:51,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-10 00:19:51,330 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-01-10 00:20:17,369 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-01-10 00:20:17,370 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:20:17,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:20:17,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 00:20:17,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:20:17,449 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:20:17,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-10 00:20:17,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-10 00:20:17,559 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:20:17,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-01-10 00:20:17,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-01-10 00:20:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 00:20:17,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:20:17,655 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-01-10 00:20:17,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-01-10 00:20:17,663 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1364 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1364) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2025-01-10 00:20:17,665 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:20:17,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168996255] [2025-01-10 00:20:17,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168996255] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:20:17,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [594070390] [2025-01-10 00:20:17,665 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:20:17,665 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-10 00:20:17,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-10 00:20:17,667 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-10 00:20:17,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2025-01-10 00:20:17,854 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-01-10 00:20:18,780 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-01-10 00:20:18,780 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:20:18,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:20:18,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 00:20:18,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:20:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:20:18,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:20:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:20:19,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [594070390] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:20:19,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:20:19,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-01-10 00:20:19,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967379439] [2025-01-10 00:20:19,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:20:19,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 00:20:19,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:20:19,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 00:20:19,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-01-10 00:20:19,053 INFO L87 Difference]: Start difference. First operand 977 states and 1046 transitions. Second operand has 24 states, 23 states have (on average 6.173913043478261) internal successors, (142), 23 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 00:20:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:20:24,683 INFO L93 Difference]: Finished difference Result 1363 states and 1466 transitions. [2025-01-10 00:20:24,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-10 00:20:24,684 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.173913043478261) internal successors, (142), 23 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2025-01-10 00:20:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:20:24,686 INFO L225 Difference]: With dead ends: 1363 [2025-01-10 00:20:24,686 INFO L226 Difference]: Without dead ends: 1359 [2025-01-10 00:20:24,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2025-01-10 00:20:24,687 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 811 mSDsluCounter, 5598 mSDsCounter, 0 mSdLazyCounter, 5603 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 6066 SdHoareTripleChecker+Invalid, 5632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:20:24,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 6066 Invalid, 5632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5603 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2025-01-10 00:20:24,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2025-01-10 00:20:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 985. [2025-01-10 00:20:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 655 states have (on average 1.5938931297709924) internal successors, (1044), 975 states have internal predecessors, (1044), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-01-10 00:20:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1057 transitions. [2025-01-10 00:20:24,696 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1057 transitions. Word has length 79 [2025-01-10 00:20:24,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:20:24,696 INFO L471 AbstractCegarLoop]: Abstraction has 985 states and 1057 transitions. [2025-01-10 00:20:24,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.173913043478261) internal successors, (142), 23 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 00:20:24,696 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1057 transitions. [2025-01-10 00:20:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-01-10 00:20:24,697 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:20:24,697 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:20:24,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2025-01-10 00:20:24,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-01-10 00:20:25,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:20:25,098 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:20:25,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:20:25,098 INFO L85 PathProgramCache]: Analyzing trace with hash -663051994, now seen corresponding path program 1 times [2025-01-10 00:20:25,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:20:25,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723418166] [2025-01-10 00:20:25,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:20:25,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:20:25,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:20:25,100 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:20:25,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-01-10 00:20:25,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-01-10 00:20:25,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-01-10 00:20:25,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:20:25,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:20:25,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 00:20:25,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:20:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:20:25,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:20:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:20:25,778 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:20:25,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723418166] [2025-01-10 00:20:25,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723418166] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:20:25,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:20:25,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-01-10 00:20:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633624301] [2025-01-10 00:20:25,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:20:25,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 00:20:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:20:25,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 00:20:25,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-01-10 00:20:25,779 INFO L87 Difference]: Start difference. First operand 985 states and 1057 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:20:26,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:20:26,856 INFO L93 Difference]: Finished difference Result 1009 states and 1096 transitions. [2025-01-10 00:20:26,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-10 00:20:26,857 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2025-01-10 00:20:26,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:20:26,859 INFO L225 Difference]: With dead ends: 1009 [2025-01-10 00:20:26,859 INFO L226 Difference]: Without dead ends: 1003 [2025-01-10 00:20:26,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-01-10 00:20:26,859 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 14 mSDsluCounter, 11625 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 12459 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:20:26,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 12459 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 00:20:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2025-01-10 00:20:26,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 1003. [2025-01-10 00:20:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 673 states have (on average 1.5854383358098068) internal successors, (1067), 993 states have internal predecessors, (1067), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-01-10 00:20:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1080 transitions. [2025-01-10 00:20:26,868 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1080 transitions. Word has length 85 [2025-01-10 00:20:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:20:26,868 INFO L471 AbstractCegarLoop]: Abstraction has 1003 states and 1080 transitions. [2025-01-10 00:20:26,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:20:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1080 transitions. [2025-01-10 00:20:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-01-10 00:20:26,869 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:20:26,869 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:20:26,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-01-10 00:20:27,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:20:27,070 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-01-10 00:20:27,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:20:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash 791550694, now seen corresponding path program 2 times [2025-01-10 00:20:27,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:20:27,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524670272] [2025-01-10 00:20:27,071 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:20:27,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:20:27,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:20:27,073 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:20:27,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-01-10 00:20:27,234 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes.