./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.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 b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:29:21,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:29:21,418 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-09 22:29:21,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:29:21,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:29:21,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:29:21,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:29:21,440 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:29:21,440 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:29:21,441 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:29:21,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:29:21,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:29:21,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:29:21,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:29:21,442 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:29:21,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:29:21,442 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:29:21,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:29:21,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:29:21,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:29:21,443 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:29:21,443 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:29:21,443 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:29:21,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:29:21,443 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:29:21,443 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:29:21,443 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:29:21,443 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:29:21,443 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:29:21,443 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:29:21,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:29:21,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:29:21,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:29:21,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:29:21,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:29:21,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:29:21,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:29:21,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:29:21,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:29:21,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:29:21,444 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:29:21,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 22:29:21,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 22:29:21,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:29:21,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:29:21,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:29:21,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:29:21,445 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 -> b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 [2025-01-09 22:29:21,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:29:21,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:29:21,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:29:21,652 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:29:21,652 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:29:21,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2025-01-09 22:29:22,738 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b22a9e883/f1e8d029f1a6481ca42a24fb08a00bda/FLAG25542576a [2025-01-09 22:29:22,977 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:29:22,978 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2025-01-09 22:29:22,990 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b22a9e883/f1e8d029f1a6481ca42a24fb08a00bda/FLAG25542576a [2025-01-09 22:29:23,306 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b22a9e883/f1e8d029f1a6481ca42a24fb08a00bda [2025-01-09 22:29:23,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:29:23,309 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:29:23,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:29:23,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:29:23,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:29:23,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:29:23" (1/1) ... [2025-01-09 22:29:23,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e76b57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:23, skipping insertion in model container [2025-01-09 22:29:23,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:29:23" (1/1) ... [2025-01-09 22:29:23,341 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:29:23,564 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:29:23,617 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:29:23,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:29:23,634 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-01-09 22:29:23,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69037ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:23, skipping insertion in model container [2025-01-09 22:29:23,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:29:23,635 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-09 22:29:23,637 INFO L158 Benchmark]: Toolchain (without parser) took 326.82ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 106.1MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:29:23,638 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:29:23,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.24ms. Allocated memory is still 167.8MB. Free memory was 120.5MB in the beginning and 106.1MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:29:23,639 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.24ms. Allocated memory is still 167.8MB. Free memory was 120.5MB in the beginning and 106.1MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.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 b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:29:25,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:29:25,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-09 22:29:25,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:29:25,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:29:25,348 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:29:25,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:29:25,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:29:25,349 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:29:25,349 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:29:25,349 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:29:25,349 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:29:25,349 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:29:25,349 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:29:25,349 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:29:25,350 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-09 22:29:25,350 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:29:25,351 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:29:25,351 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:29:25,351 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:29:25,351 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:29:25,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:29:25,351 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:29:25,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:29:25,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:29:25,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:29:25,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:29:25,351 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:29:25,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:29:25,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:29:25,352 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:29:25,352 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:29:25,352 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-09 22:29:25,352 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-09 22:29:25,352 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:29:25,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:29:25,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:29:25,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:29:25,352 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 -> b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 [2025-01-09 22:29:25,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:29:25,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:29:25,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:29:25,584 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:29:25,585 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:29:25,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2025-01-09 22:29:26,664 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a9aad3a2e/a9c2818035854ee9a0f19960846eaca9/FLAG9e3d8a9f4 [2025-01-09 22:29:26,920 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:29:26,920 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2025-01-09 22:29:26,929 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a9aad3a2e/a9c2818035854ee9a0f19960846eaca9/FLAG9e3d8a9f4 [2025-01-09 22:29:26,938 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a9aad3a2e/a9c2818035854ee9a0f19960846eaca9 [2025-01-09 22:29:26,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:29:26,941 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:29:26,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:29:26,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:29:26,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:29:26,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:29:26" (1/1) ... [2025-01-09 22:29:26,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@766b83b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:26, skipping insertion in model container [2025-01-09 22:29:26,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:29:26" (1/1) ... [2025-01-09 22:29:26,977 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:29:27,166 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:29:27,217 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:29:27,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:29:27,235 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-09 22:29:27,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:29:27,268 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:29:27,289 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:29:27,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:29:27,295 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 22:29:27,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:29:27,379 INFO L204 MainTranslator]: Completed translation [2025-01-09 22:29:27,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27 WrapperNode [2025-01-09 22:29:27,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:29:27,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 22:29:27,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 22:29:27,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 22:29:27,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,418 INFO L138 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 191 [2025-01-09 22:29:27,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 22:29:27,419 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 22:29:27,419 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 22:29:27,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 22:29:27,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,467 INFO L175 MemorySlicer]: Split 35 memory accesses to 3 slices as follows [2, 29, 4]. 83 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2, 0]. The 17 writes are split as follows [0, 13, 4]. [2025-01-09 22:29:27,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,487 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,491 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 22:29:27,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 22:29:27,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 22:29:27,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 22:29:27,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (1/1) ... [2025-01-09 22:29:27,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:29:27,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:27,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 22:29:27,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 22:29:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-09 22:29:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-01-09 22:29:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-01-09 22:29:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2025-01-09 22:29:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2025-01-09 22:29:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2025-01-09 22:29:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2025-01-09 22:29:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-01-09 22:29:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-01-09 22:29:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 22:29:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 22:29:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2025-01-09 22:29:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2025-01-09 22:29:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 22:29:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 22:29:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 22:29:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 22:29:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 22:29:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 22:29:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 22:29:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-09 22:29:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-01-09 22:29:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-01-09 22:29:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 22:29:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 22:29:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 22:29:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-01-09 22:29:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2025-01-09 22:29:27,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2025-01-09 22:29:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2025-01-09 22:29:27,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2025-01-09 22:29:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 22:29:27,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 22:29:27,713 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 22:29:27,714 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 22:29:28,302 INFO L? ?]: Removed 230 outVars from TransFormulas that were not future-live. [2025-01-09 22:29:28,303 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 22:29:28,314 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 22:29:28,314 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 22:29:28,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:29:28 BoogieIcfgContainer [2025-01-09 22:29:28,314 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 22:29:28,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 22:29:28,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 22:29:28,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 22:29:28,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:29:26" (1/3) ... [2025-01-09 22:29:28,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1316a0a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:29:28, skipping insertion in model container [2025-01-09 22:29:28,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:27" (2/3) ... [2025-01-09 22:29:28,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1316a0a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:29:28, skipping insertion in model container [2025-01-09 22:29:28,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:29:28" (3/3) ... [2025-01-09 22:29:28,322 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test23_3.i [2025-01-09 22:29:28,333 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 22:29:28,334 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test23_3.i that has 7 procedures, 199 locations, 1 initial locations, 2 loop locations, and 76 error locations. [2025-01-09 22:29:28,365 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 22:29:28,372 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;@7c576892, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 22:29:28,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2025-01-09 22:29:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 108 states have (on average 1.8333333333333333) internal successors, (198), 184 states have internal predecessors, (198), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 22:29:28,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 22:29:28,381 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:28,381 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:29:28,382 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:28,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash -57079080, now seen corresponding path program 1 times [2025-01-09 22:29:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:28,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195501993] [2025-01-09 22:29:28,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:28,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:28,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:28,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:28,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 22:29:28,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 22:29:28,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 22:29:28,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:28,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:28,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 22:29:28,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:28,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:29:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:28,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:28,592 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:28,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195501993] [2025-01-09 22:29:28,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195501993] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:28,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:28,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 22:29:28,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034919900] [2025-01-09 22:29:28,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:28,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:29:28,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:28,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:29:28,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 22:29:28,616 INFO L87 Difference]: Start difference. First operand has 199 states, 108 states have (on average 1.8333333333333333) internal successors, (198), 184 states have internal predecessors, (198), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:29,120 INFO L93 Difference]: Finished difference Result 215 states and 231 transitions. [2025-01-09 22:29:29,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 22:29:29,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-01-09 22:29:29,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:29,132 INFO L225 Difference]: With dead ends: 215 [2025-01-09 22:29:29,132 INFO L226 Difference]: Without dead ends: 213 [2025-01-09 22:29:29,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 22:29:29,134 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 10 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:29,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 822 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 22:29:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2025-01-09 22:29:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 206. [2025-01-09 22:29:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 114 states have (on average 1.7894736842105263) internal successors, (204), 189 states have internal predecessors, (204), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2025-01-09 22:29:29,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 223 transitions. [2025-01-09 22:29:29,169 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 223 transitions. Word has length 12 [2025-01-09 22:29:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:29,169 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 223 transitions. [2025-01-09 22:29:29,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 223 transitions. [2025-01-09 22:29:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 22:29:29,170 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:29,170 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:29:29,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 22:29:29,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:29,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:29,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:29,371 INFO L85 PathProgramCache]: Analyzing trace with hash -57079079, now seen corresponding path program 1 times [2025-01-09 22:29:29,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:29,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980948598] [2025-01-09 22:29:29,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:29,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:29,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:29,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:29,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 22:29:29,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 22:29:29,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 22:29:29,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:29,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:29,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 22:29:29,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:29,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:29:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:29,541 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:29,541 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980948598] [2025-01-09 22:29:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980948598] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:29,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:29,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 22:29:29,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136381076] [2025-01-09 22:29:29,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:29,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 22:29:29,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:29,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 22:29:29,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-09 22:29:29,542 INFO L87 Difference]: Start difference. First operand 206 states and 223 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:30,061 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2025-01-09 22:29:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 22:29:30,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-01-09 22:29:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:30,063 INFO L225 Difference]: With dead ends: 210 [2025-01-09 22:29:30,063 INFO L226 Difference]: Without dead ends: 210 [2025-01-09 22:29:30,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-01-09 22:29:30,064 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 10 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:30,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1080 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 22:29:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-01-09 22:29:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 206. [2025-01-09 22:29:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 114 states have (on average 1.7719298245614035) internal successors, (202), 189 states have internal predecessors, (202), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2025-01-09 22:29:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 221 transitions. [2025-01-09 22:29:30,071 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 221 transitions. Word has length 12 [2025-01-09 22:29:30,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:30,071 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 221 transitions. [2025-01-09 22:29:30,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:30,071 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 221 transitions. [2025-01-09 22:29:30,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 22:29:30,071 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:30,071 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:29:30,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 22:29:30,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:30,272 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:30,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1685731255, now seen corresponding path program 1 times [2025-01-09 22:29:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:30,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248438553] [2025-01-09 22:29:30,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:30,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:30,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:30,274 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:30,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 22:29:30,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 22:29:30,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 22:29:30,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:30,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:30,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 22:29:30,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:30,387 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:30,387 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:30,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248438553] [2025-01-09 22:29:30,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248438553] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:30,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:30,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:29:30,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462438428] [2025-01-09 22:29:30,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:30,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:29:30,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:30,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:29:30,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:29:30,387 INFO L87 Difference]: Start difference. First operand 206 states and 221 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:30,418 INFO L93 Difference]: Finished difference Result 197 states and 211 transitions. [2025-01-09 22:29:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:29:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-01-09 22:29:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:30,420 INFO L225 Difference]: With dead ends: 197 [2025-01-09 22:29:30,420 INFO L226 Difference]: Without dead ends: 197 [2025-01-09 22:29:30,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:29:30,421 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:30,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 817 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:29:30,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-01-09 22:29:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2025-01-09 22:29:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 110 states have (on average 1.7636363636363637) internal successors, (194), 181 states have internal predecessors, (194), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2025-01-09 22:29:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 211 transitions. [2025-01-09 22:29:30,431 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 211 transitions. Word has length 12 [2025-01-09 22:29:30,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:30,432 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 211 transitions. [2025-01-09 22:29:30,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 211 transitions. [2025-01-09 22:29:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 22:29:30,432 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:30,433 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:29:30,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 22:29:30,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:30,637 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:30,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:30,637 INFO L85 PathProgramCache]: Analyzing trace with hash -57165064, now seen corresponding path program 1 times [2025-01-09 22:29:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:30,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856362474] [2025-01-09 22:29:30,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:30,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:30,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:30,640 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:30,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 22:29:30,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 22:29:30,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 22:29:30,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:30,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:30,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:29:30,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:30,721 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:30,721 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:30,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856362474] [2025-01-09 22:29:30,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856362474] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:30,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:30,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:29:30,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96074183] [2025-01-09 22:29:30,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:30,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:29:30,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:30,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:29:30,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:29:30,723 INFO L87 Difference]: Start difference. First operand 197 states and 211 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:30,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:30,752 INFO L93 Difference]: Finished difference Result 198 states and 211 transitions. [2025-01-09 22:29:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:29:30,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2025-01-09 22:29:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:30,753 INFO L225 Difference]: With dead ends: 198 [2025-01-09 22:29:30,753 INFO L226 Difference]: Without dead ends: 198 [2025-01-09 22:29:30,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:29:30,754 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 101 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:30,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 692 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:29:30,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-01-09 22:29:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2025-01-09 22:29:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 110 states have (on average 1.7545454545454546) internal successors, (193), 181 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2025-01-09 22:29:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 210 transitions. [2025-01-09 22:29:30,760 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 210 transitions. Word has length 12 [2025-01-09 22:29:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:30,760 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 210 transitions. [2025-01-09 22:29:30,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:30,760 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 210 transitions. [2025-01-09 22:29:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 22:29:30,761 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:30,761 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:29:30,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 22:29:30,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:30,961 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:30,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:30,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1685645271, now seen corresponding path program 1 times [2025-01-09 22:29:30,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:30,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023347922] [2025-01-09 22:29:30,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:30,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:30,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:30,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:30,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 22:29:31,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 22:29:31,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 22:29:31,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:31,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:31,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:29:31,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:31,043 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:31,043 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:31,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023347922] [2025-01-09 22:29:31,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023347922] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:31,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:31,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:29:31,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936126739] [2025-01-09 22:29:31,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:31,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:29:31,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:31,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:29:31,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:29:31,045 INFO L87 Difference]: Start difference. First operand 197 states and 210 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:31,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:31,062 INFO L93 Difference]: Finished difference Result 199 states and 212 transitions. [2025-01-09 22:29:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:29:31,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2025-01-09 22:29:31,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:31,063 INFO L225 Difference]: With dead ends: 199 [2025-01-09 22:29:31,064 INFO L226 Difference]: Without dead ends: 199 [2025-01-09 22:29:31,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:29:31,064 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 95 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:31,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 703 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:29:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-01-09 22:29:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2025-01-09 22:29:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 112 states have (on average 1.7410714285714286) internal successors, (195), 183 states have internal predecessors, (195), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2025-01-09 22:29:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 212 transitions. [2025-01-09 22:29:31,074 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 212 transitions. Word has length 12 [2025-01-09 22:29:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:31,074 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 212 transitions. [2025-01-09 22:29:31,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 212 transitions. [2025-01-09 22:29:31,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-09 22:29:31,074 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:31,074 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:29:31,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 22:29:31,275 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 [2025-01-09 22:29:31,275 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:31,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash 715415953, now seen corresponding path program 1 times [2025-01-09 22:29:31,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:31,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779586563] [2025-01-09 22:29:31,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:31,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:31,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:31,277 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) [2025-01-09 22:29:31,279 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 [2025-01-09 22:29:31,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 22:29:31,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 22:29:31,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:31,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:31,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:29:31,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:31,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:31,344 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:31,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779586563] [2025-01-09 22:29:31,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779586563] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:31,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:31,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:29:31,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919704771] [2025-01-09 22:29:31,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:31,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:29:31,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:31,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:29:31,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:29:31,345 INFO L87 Difference]: Start difference. First operand 199 states and 212 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:31,584 INFO L93 Difference]: Finished difference Result 211 states and 226 transitions. [2025-01-09 22:29:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:29:31,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2025-01-09 22:29:31,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:31,585 INFO L225 Difference]: With dead ends: 211 [2025-01-09 22:29:31,585 INFO L226 Difference]: Without dead ends: 203 [2025-01-09 22:29:31,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:29:31,586 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 51 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:31,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 371 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:29:31,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-01-09 22:29:31,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 193. [2025-01-09 22:29:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 107 states have (on average 1.766355140186916) internal successors, (189), 178 states have internal predecessors, (189), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 22:29:31,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 205 transitions. [2025-01-09 22:29:31,594 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 205 transitions. Word has length 13 [2025-01-09 22:29:31,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:31,594 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 205 transitions. [2025-01-09 22:29:31,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 22:29:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 205 transitions. [2025-01-09 22:29:31,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-09 22:29:31,595 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:31,595 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:29:31,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 22:29:31,795 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 [2025-01-09 22:29:31,795 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:31,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1594852894, now seen corresponding path program 1 times [2025-01-09 22:29:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:31,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003556473] [2025-01-09 22:29:31,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:31,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:31,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:31,798 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:31,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 22:29:31,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 22:29:31,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 22:29:31,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:31,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:31,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 22:29:31,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:31,907 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_malloc_#res.base| (select |c_#valid| |ldv_malloc_#res.base|)) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-01-09 22:29:31,950 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-09 22:29:31,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-01-09 22:29:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:31,982 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:31,982 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:31,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003556473] [2025-01-09 22:29:31,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003556473] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:31,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:31,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:29:31,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468375305] [2025-01-09 22:29:31,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:31,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:29:31,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:31,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:29:31,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2025-01-09 22:29:31,983 INFO L87 Difference]: Start difference. First operand 193 states and 205 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:29:32,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:32,404 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2025-01-09 22:29:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:29:32,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2025-01-09 22:29:32,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:32,405 INFO L225 Difference]: With dead ends: 244 [2025-01-09 22:29:32,405 INFO L226 Difference]: Without dead ends: 244 [2025-01-09 22:29:32,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=48, Unknown=1, NotChecked=14, Total=90 [2025-01-09 22:29:32,406 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 205 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:32,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 409 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 380 Invalid, 0 Unknown, 257 Unchecked, 0.4s Time] [2025-01-09 22:29:32,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2025-01-09 22:29:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 203. [2025-01-09 22:29:32,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 116 states have (on average 1.75) internal successors, (203), 187 states have internal predecessors, (203), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2025-01-09 22:29:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 221 transitions. [2025-01-09 22:29:32,410 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 221 transitions. Word has length 16 [2025-01-09 22:29:32,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:32,410 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 221 transitions. [2025-01-09 22:29:32,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:29:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 221 transitions. [2025-01-09 22:29:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-09 22:29:32,411 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:32,411 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:29:32,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 22:29:32,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:32,612 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:32,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1594852893, now seen corresponding path program 1 times [2025-01-09 22:29:32,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:32,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355665742] [2025-01-09 22:29:32,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:32,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:32,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:32,614 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:32,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 22:29:32,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 22:29:32,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 22:29:32,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:32,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:32,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 22:29:32,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:32,757 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-01-09 22:29:32,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:29:32,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:29:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:32,827 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:32,827 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:32,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355665742] [2025-01-09 22:29:32,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355665742] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:32,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:32,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 22:29:32,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567534319] [2025-01-09 22:29:32,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:32,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 22:29:32,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:32,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 22:29:32,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2025-01-09 22:29:32,828 INFO L87 Difference]: Start difference. First operand 203 states and 221 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:29:33,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:33,530 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2025-01-09 22:29:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 22:29:33,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2025-01-09 22:29:33,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:33,532 INFO L225 Difference]: With dead ends: 243 [2025-01-09 22:29:33,532 INFO L226 Difference]: Without dead ends: 243 [2025-01-09 22:29:33,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2025-01-09 22:29:33,532 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 295 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:33,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 312 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 626 Invalid, 0 Unknown, 256 Unchecked, 0.6s Time] [2025-01-09 22:29:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-01-09 22:29:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 202. [2025-01-09 22:29:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 116 states have (on average 1.7413793103448276) internal successors, (202), 186 states have internal predecessors, (202), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2025-01-09 22:29:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2025-01-09 22:29:33,538 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 16 [2025-01-09 22:29:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:33,538 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2025-01-09 22:29:33,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:29:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2025-01-09 22:29:33,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 22:29:33,539 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:33,539 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] [2025-01-09 22:29:33,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 22:29:33,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:33,740 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:33,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:33,740 INFO L85 PathProgramCache]: Analyzing trace with hash 585765277, now seen corresponding path program 1 times [2025-01-09 22:29:33,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:33,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935238815] [2025-01-09 22:29:33,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:33,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:33,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:33,742 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:33,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 22:29:33,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 22:29:33,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 22:29:33,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:33,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:33,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 22:29:33,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:33,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:29:33,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:33,838 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:33,839 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:33,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935238815] [2025-01-09 22:29:33,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935238815] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:33,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:33,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:29:33,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810284324] [2025-01-09 22:29:33,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:33,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:29:33,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:33,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:29:33,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:29:33,840 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:34,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:34,231 INFO L93 Difference]: Finished difference Result 253 states and 280 transitions. [2025-01-09 22:29:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:29:34,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2025-01-09 22:29:34,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:34,233 INFO L225 Difference]: With dead ends: 253 [2025-01-09 22:29:34,233 INFO L226 Difference]: Without dead ends: 253 [2025-01-09 22:29:34,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:29:34,233 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 62 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:34,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 626 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 22:29:34,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-01-09 22:29:34,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 229. [2025-01-09 22:29:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 145 states have (on average 1.7517241379310344) internal successors, (254), 213 states have internal predecessors, (254), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2025-01-09 22:29:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 272 transitions. [2025-01-09 22:29:34,239 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 272 transitions. Word has length 25 [2025-01-09 22:29:34,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:34,239 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 272 transitions. [2025-01-09 22:29:34,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:34,239 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 272 transitions. [2025-01-09 22:29:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 22:29:34,239 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:34,239 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] [2025-01-09 22:29:34,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-09 22:29:34,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:34,444 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:34,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash 585765278, now seen corresponding path program 1 times [2025-01-09 22:29:34,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:34,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410377633] [2025-01-09 22:29:34,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:34,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:34,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:34,446 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:34,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 22:29:34,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 22:29:34,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 22:29:34,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:34,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:34,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 22:29:34,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:34,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:29:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:34,583 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:34,584 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:34,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410377633] [2025-01-09 22:29:34,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410377633] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:34,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:34,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:29:34,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935315948] [2025-01-09 22:29:34,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:34,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:29:34,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:34,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:29:34,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:29:34,585 INFO L87 Difference]: Start difference. First operand 229 states and 272 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:35,018 INFO L93 Difference]: Finished difference Result 251 states and 278 transitions. [2025-01-09 22:29:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:29:35,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2025-01-09 22:29:35,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:35,020 INFO L225 Difference]: With dead ends: 251 [2025-01-09 22:29:35,020 INFO L226 Difference]: Without dead ends: 251 [2025-01-09 22:29:35,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:29:35,021 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 59 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:35,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 661 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 22:29:35,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-01-09 22:29:35,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 230. [2025-01-09 22:29:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 147 states have (on average 1.7346938775510203) internal successors, (255), 213 states have internal predecessors, (255), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-09 22:29:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 276 transitions. [2025-01-09 22:29:35,028 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 276 transitions. Word has length 25 [2025-01-09 22:29:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:35,029 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 276 transitions. [2025-01-09 22:29:35,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 276 transitions. [2025-01-09 22:29:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 22:29:35,031 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:35,031 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] [2025-01-09 22:29:35,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-09 22:29:35,236 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 [2025-01-09 22:29:35,236 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:35,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:35,236 INFO L85 PathProgramCache]: Analyzing trace with hash 279782239, now seen corresponding path program 1 times [2025-01-09 22:29:35,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:35,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129632554] [2025-01-09 22:29:35,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:35,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:35,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:35,238 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) [2025-01-09 22:29:35,239 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 [2025-01-09 22:29:35,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 22:29:35,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 22:29:35,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:35,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:35,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 22:29:35,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:35,349 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:35,349 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:35,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129632554] [2025-01-09 22:29:35,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129632554] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:35,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:35,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 22:29:35,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729253182] [2025-01-09 22:29:35,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:35,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:29:35,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:35,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:29:35,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:29:35,350 INFO L87 Difference]: Start difference. First operand 230 states and 276 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:29:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:35,367 INFO L93 Difference]: Finished difference Result 230 states and 276 transitions. [2025-01-09 22:29:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:29:35,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2025-01-09 22:29:35,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:35,370 INFO L225 Difference]: With dead ends: 230 [2025-01-09 22:29:35,371 INFO L226 Difference]: Without dead ends: 230 [2025-01-09 22:29:35,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:29:35,371 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 85 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:35,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 674 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:29:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-01-09 22:29:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2025-01-09 22:29:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 147 states have (on average 1.727891156462585) internal successors, (254), 212 states have internal predecessors, (254), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-09 22:29:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 275 transitions. [2025-01-09 22:29:35,376 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 275 transitions. Word has length 27 [2025-01-09 22:29:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:35,376 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 275 transitions. [2025-01-09 22:29:35,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:29:35,376 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 275 transitions. [2025-01-09 22:29:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 22:29:35,377 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:35,377 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] [2025-01-09 22:29:35,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-09 22:29:35,577 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 [2025-01-09 22:29:35,577 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:35,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:35,578 INFO L85 PathProgramCache]: Analyzing trace with hash 83315080, now seen corresponding path program 1 times [2025-01-09 22:29:35,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:35,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795710694] [2025-01-09 22:29:35,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:35,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:35,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:35,580 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:35,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 22:29:35,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-09 22:29:35,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 22:29:35,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:35,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:35,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 22:29:35,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:35,697 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:35,697 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:35,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795710694] [2025-01-09 22:29:35,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795710694] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:35,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:35,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 22:29:35,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186213743] [2025-01-09 22:29:35,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:35,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:29:35,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:35,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:29:35,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:29:35,698 INFO L87 Difference]: Start difference. First operand 229 states and 275 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:35,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:35,750 INFO L93 Difference]: Finished difference Result 229 states and 274 transitions. [2025-01-09 22:29:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:29:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2025-01-09 22:29:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:35,752 INFO L225 Difference]: With dead ends: 229 [2025-01-09 22:29:35,752 INFO L226 Difference]: Without dead ends: 229 [2025-01-09 22:29:35,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:29:35,752 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 78 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:35,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 833 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:29:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-01-09 22:29:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2025-01-09 22:29:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 147 states have (on average 1.7210884353741496) internal successors, (253), 212 states have internal predecessors, (253), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-09 22:29:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 274 transitions. [2025-01-09 22:29:35,758 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 274 transitions. Word has length 28 [2025-01-09 22:29:35,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:35,758 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 274 transitions. [2025-01-09 22:29:35,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:35,758 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 274 transitions. [2025-01-09 22:29:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 22:29:35,759 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:35,759 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] [2025-01-09 22:29:35,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 22:29:35,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:35,959 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:35,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1243902682, now seen corresponding path program 1 times [2025-01-09 22:29:35,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:35,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823286042] [2025-01-09 22:29:35,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:35,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:35,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:35,962 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:35,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 22:29:36,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 22:29:36,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 22:29:36,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:36,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:36,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 22:29:36,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:36,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:29:36,074 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2025-01-09 22:29:36,089 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-09 22:29:36,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2025-01-09 22:29:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:36,118 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:36,118 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:36,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823286042] [2025-01-09 22:29:36,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823286042] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:36,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:36,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:29:36,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094602633] [2025-01-09 22:29:36,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:36,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:29:36,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:36,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:29:36,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2025-01-09 22:29:36,120 INFO L87 Difference]: Start difference. First operand 229 states and 274 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:29:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:36,485 INFO L93 Difference]: Finished difference Result 257 states and 283 transitions. [2025-01-09 22:29:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:29:36,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2025-01-09 22:29:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:36,487 INFO L225 Difference]: With dead ends: 257 [2025-01-09 22:29:36,487 INFO L226 Difference]: Without dead ends: 257 [2025-01-09 22:29:36,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2025-01-09 22:29:36,487 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 121 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:36,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 374 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 322 Invalid, 0 Unknown, 283 Unchecked, 0.3s Time] [2025-01-09 22:29:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2025-01-09 22:29:36,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 226. [2025-01-09 22:29:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 147 states have (on average 1.6734693877551021) internal successors, (246), 209 states have internal predecessors, (246), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-09 22:29:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 267 transitions. [2025-01-09 22:29:36,494 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 267 transitions. Word has length 33 [2025-01-09 22:29:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:36,495 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 267 transitions. [2025-01-09 22:29:36,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:29:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 267 transitions. [2025-01-09 22:29:36,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 22:29:36,495 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:36,495 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] [2025-01-09 22:29:36,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 22:29:36,696 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 [2025-01-09 22:29:36,696 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:36,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:36,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1243902681, now seen corresponding path program 1 times [2025-01-09 22:29:36,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:36,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583116834] [2025-01-09 22:29:36,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:36,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:36,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:36,699 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) [2025-01-09 22:29:36,706 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 [2025-01-09 22:29:36,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 22:29:36,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 22:29:36,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:36,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:36,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 22:29:36,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:36,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:29:36,831 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| |c_ldv_zalloc_#in~size#1|) |c_#length|)) is different from true [2025-01-09 22:29:36,849 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-01-09 22:29:36,849 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 [2025-01-09 22:29:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:36,999 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:36,999 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:36,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583116834] [2025-01-09 22:29:36,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583116834] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:36,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:36,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 22:29:36,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633302606] [2025-01-09 22:29:36,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:36,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:29:37,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:37,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:29:37,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2025-01-09 22:29:37,000 INFO L87 Difference]: Start difference. First operand 226 states and 267 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:29:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:37,633 INFO L93 Difference]: Finished difference Result 247 states and 272 transitions. [2025-01-09 22:29:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:29:37,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2025-01-09 22:29:37,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:37,634 INFO L225 Difference]: With dead ends: 247 [2025-01-09 22:29:37,634 INFO L226 Difference]: Without dead ends: 247 [2025-01-09 22:29:37,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2025-01-09 22:29:37,635 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 120 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:37,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 435 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 441 Invalid, 0 Unknown, 273 Unchecked, 0.6s Time] [2025-01-09 22:29:37,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2025-01-09 22:29:37,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 226. [2025-01-09 22:29:37,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 147 states have (on average 1.6598639455782314) internal successors, (244), 209 states have internal predecessors, (244), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-09 22:29:37,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 265 transitions. [2025-01-09 22:29:37,639 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 265 transitions. Word has length 33 [2025-01-09 22:29:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:37,639 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 265 transitions. [2025-01-09 22:29:37,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:29:37,640 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 265 transitions. [2025-01-09 22:29:37,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 22:29:37,640 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:37,640 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] [2025-01-09 22:29:37,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-09 22:29:37,841 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 [2025-01-09 22:29:37,841 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:37,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash -128194983, now seen corresponding path program 1 times [2025-01-09 22:29:37,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:37,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912256371] [2025-01-09 22:29:37,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:37,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:37,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:37,843 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:37,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 22:29:37,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 22:29:37,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 22:29:37,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:37,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:37,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 22:29:37,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:37,991 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:37,991 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:37,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912256371] [2025-01-09 22:29:37,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912256371] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:37,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:37,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:29:37,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413145032] [2025-01-09 22:29:37,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:37,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:29:37,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:37,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:29:37,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:29:37,992 INFO L87 Difference]: Start difference. First operand 226 states and 265 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:38,114 INFO L93 Difference]: Finished difference Result 224 states and 262 transitions. [2025-01-09 22:29:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:29:38,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2025-01-09 22:29:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:38,116 INFO L225 Difference]: With dead ends: 224 [2025-01-09 22:29:38,116 INFO L226 Difference]: Without dead ends: 224 [2025-01-09 22:29:38,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:29:38,116 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 63 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:38,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 759 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:29:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-01-09 22:29:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2025-01-09 22:29:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 147 states have (on average 1.6394557823129252) internal successors, (241), 207 states have internal predecessors, (241), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-09 22:29:38,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 262 transitions. [2025-01-09 22:29:38,121 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 262 transitions. Word has length 36 [2025-01-09 22:29:38,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:38,121 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 262 transitions. [2025-01-09 22:29:38,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:38,121 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 262 transitions. [2025-01-09 22:29:38,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 22:29:38,121 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:38,123 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] [2025-01-09 22:29:38,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 22:29:38,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:38,324 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:38,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:38,324 INFO L85 PathProgramCache]: Analyzing trace with hash -128198824, now seen corresponding path program 1 times [2025-01-09 22:29:38,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:38,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272183024] [2025-01-09 22:29:38,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:38,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:38,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:38,327 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:38,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 22:29:38,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 22:29:38,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 22:29:38,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:38,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:38,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 22:29:38,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:38,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:38,435 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:38,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272183024] [2025-01-09 22:29:38,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272183024] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:38,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:38,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 22:29:38,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047451645] [2025-01-09 22:29:38,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:38,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:29:38,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:38,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:29:38,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:29:38,436 INFO L87 Difference]: Start difference. First operand 224 states and 262 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:38,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:38,448 INFO L93 Difference]: Finished difference Result 228 states and 266 transitions. [2025-01-09 22:29:38,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:29:38,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2025-01-09 22:29:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:38,458 INFO L225 Difference]: With dead ends: 228 [2025-01-09 22:29:38,458 INFO L226 Difference]: Without dead ends: 228 [2025-01-09 22:29:38,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:29:38,459 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 0 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:38,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 564 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:29:38,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-01-09 22:29:38,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2025-01-09 22:29:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 151 states have (on average 1.6225165562913908) internal successors, (245), 211 states have internal predecessors, (245), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-09 22:29:38,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 266 transitions. [2025-01-09 22:29:38,466 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 266 transitions. Word has length 36 [2025-01-09 22:29:38,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:38,467 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 266 transitions. [2025-01-09 22:29:38,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:38,467 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 266 transitions. [2025-01-09 22:29:38,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 22:29:38,467 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:38,468 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] [2025-01-09 22:29:38,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-09 22:29:38,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:38,672 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:38,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:38,674 INFO L85 PathProgramCache]: Analyzing trace with hash 361836073, now seen corresponding path program 1 times [2025-01-09 22:29:38,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:38,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327505423] [2025-01-09 22:29:38,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:38,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:38,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:38,676 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:38,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 22:29:38,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 22:29:38,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 22:29:38,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:38,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:38,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 22:29:38,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:38,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:29:38,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:29:38,816 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2025-01-09 22:29:38,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:29:38,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:29:38,841 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:29:38,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:29:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:38,901 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:38,901 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327505423] [2025-01-09 22:29:38,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327505423] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:38,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:38,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 22:29:38,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944964716] [2025-01-09 22:29:38,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:38,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:29:38,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:38,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:29:38,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2025-01-09 22:29:38,902 INFO L87 Difference]: Start difference. First operand 228 states and 266 transitions. Second operand has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:29:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:39,394 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2025-01-09 22:29:39,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:29:39,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2025-01-09 22:29:39,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:39,395 INFO L225 Difference]: With dead ends: 251 [2025-01-09 22:29:39,395 INFO L226 Difference]: Without dead ends: 251 [2025-01-09 22:29:39,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=29, Unknown=1, NotChecked=10, Total=56 [2025-01-09 22:29:39,395 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 106 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:39,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 399 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 481 Invalid, 0 Unknown, 280 Unchecked, 0.5s Time] [2025-01-09 22:29:39,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-01-09 22:29:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 228. [2025-01-09 22:29:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 151 states have (on average 1.609271523178808) internal successors, (243), 211 states have internal predecessors, (243), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-09 22:29:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 264 transitions. [2025-01-09 22:29:39,401 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 264 transitions. Word has length 37 [2025-01-09 22:29:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:39,401 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 264 transitions. [2025-01-09 22:29:39,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:29:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 264 transitions. [2025-01-09 22:29:39,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-01-09 22:29:39,402 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:39,402 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:29:39,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-09 22:29:39,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:39,602 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:39,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash 682628540, now seen corresponding path program 1 times [2025-01-09 22:29:39,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:39,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337256098] [2025-01-09 22:29:39,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:39,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:39,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:39,605 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:39,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 22:29:39,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-01-09 22:29:39,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-09 22:29:39,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:39,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:39,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 22:29:39,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:39,719 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:39,719 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:39,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337256098] [2025-01-09 22:29:39,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337256098] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:39,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:39,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 22:29:39,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888451249] [2025-01-09 22:29:39,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:39,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:29:39,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:39,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:29:39,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:29:39,720 INFO L87 Difference]: Start difference. First operand 228 states and 264 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:39,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:39,733 INFO L93 Difference]: Finished difference Result 230 states and 266 transitions. [2025-01-09 22:29:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:29:39,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2025-01-09 22:29:39,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:39,735 INFO L225 Difference]: With dead ends: 230 [2025-01-09 22:29:39,735 INFO L226 Difference]: Without dead ends: 230 [2025-01-09 22:29:39,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:29:39,735 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 0 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:39,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 563 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:29:39,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-01-09 22:29:39,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2025-01-09 22:29:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 153 states have (on average 1.6013071895424837) internal successors, (245), 213 states have internal predecessors, (245), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-09 22:29:39,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 266 transitions. [2025-01-09 22:29:39,739 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 266 transitions. Word has length 41 [2025-01-09 22:29:39,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:39,740 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 266 transitions. [2025-01-09 22:29:39,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 22:29:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 266 transitions. [2025-01-09 22:29:39,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-01-09 22:29:39,740 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:39,740 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] [2025-01-09 22:29:39,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-09 22:29:39,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:39,941 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:39,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash -313285902, now seen corresponding path program 1 times [2025-01-09 22:29:39,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:39,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441581430] [2025-01-09 22:29:39,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:39,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:39,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:39,943 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:29:39,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 22:29:40,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-01-09 22:29:40,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-01-09 22:29:40,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:40,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:40,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 22:29:40,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:40,076 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-09 22:29:40,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-01-09 22:29:40,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-01-09 22:29:40,137 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-09 22:29:40,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-01-09 22:29:40,249 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 16 treesize of output 13 [2025-01-09 22:29:40,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2025-01-09 22:29:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:40,274 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:40,274 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:40,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441581430] [2025-01-09 22:29:40,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441581430] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:40,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:40,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 22:29:40,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614636992] [2025-01-09 22:29:40,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:40,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 22:29:40,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:40,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 22:29:40,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-01-09 22:29:40,275 INFO L87 Difference]: Start difference. First operand 230 states and 266 transitions. Second operand has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:29:40,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:29:40,972 INFO L93 Difference]: Finished difference Result 305 states and 346 transitions. [2025-01-09 22:29:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 22:29:40,972 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2025-01-09 22:29:40,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:29:40,973 INFO L225 Difference]: With dead ends: 305 [2025-01-09 22:29:40,973 INFO L226 Difference]: Without dead ends: 305 [2025-01-09 22:29:40,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2025-01-09 22:29:40,973 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 357 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 22:29:40,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 653 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 22:29:40,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2025-01-09 22:29:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 241. [2025-01-09 22:29:40,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 164 states have (on average 1.5975609756097562) internal successors, (262), 221 states have internal predecessors, (262), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-09 22:29:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 283 transitions. [2025-01-09 22:29:40,977 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 283 transitions. Word has length 42 [2025-01-09 22:29:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:29:40,978 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 283 transitions. [2025-01-09 22:29:40,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:29:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 283 transitions. [2025-01-09 22:29:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-01-09 22:29:40,978 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:29:40,978 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] [2025-01-09 22:29:40,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-09 22:29:41,178 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 [2025-01-09 22:29:41,179 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2025-01-09 22:29:41,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:29:41,179 INFO L85 PathProgramCache]: Analyzing trace with hash -313285901, now seen corresponding path program 1 times [2025-01-09 22:29:41,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:29:41,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907960083] [2025-01-09 22:29:41,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:29:41,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:29:41,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:29:41,181 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) [2025-01-09 22:29:41,182 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 [2025-01-09 22:29:41,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-01-09 22:29:41,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-01-09 22:29:41,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:29:41,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:29:41,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 22:29:41,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:29:41,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:29:41,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:29:41,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:29:41,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:29:49,578 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-01-09 22:29:49,578 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 14 [2025-01-09 22:29:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:29:49,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:29:49,711 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:29:49,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907960083] [2025-01-09 22:29:49,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907960083] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:29:49,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:29:49,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 22:29:49,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345118905] [2025-01-09 22:29:49,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:29:49,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 22:29:49,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:29:49,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 22:29:49,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=79, Unknown=6, NotChecked=0, Total=110 [2025-01-09 22:29:49,712 INFO L87 Difference]: Start difference. First operand 241 states and 283 transitions. Second operand has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 22:29:53,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:30:01,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:30:05,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:30:09,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:30:30,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:30:34,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:30:38,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:30:43,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:31:03,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-09 22:31:07,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]