./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-3.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 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:20:11,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:20:11,156 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:20:11,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:20:11,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:20:11,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:20:11,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:20:11,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:20:11,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:20:11,180 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:20:11,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:20:11,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:20:11,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:20:11,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:20:11,181 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:20:11,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:20:11,181 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:20:11,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:20:11,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:20:11,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:20:11,182 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:20:11,182 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:20:11,182 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:20:11,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:20:11,182 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:20:11,182 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:20:11,182 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:20:11,182 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:20:11,182 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:20:11,182 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:20:11,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:20:11,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:20:11,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:20:11,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:20:11,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:20:11,183 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:20:11,183 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:20:11,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:20:11,183 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:20:11,183 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:20:11,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:20:11,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:20:11,184 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 -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2025-02-06 12:20:11,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:20:11,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:20:11,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:20:11,384 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:20:11,384 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:20:11,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-3.i [2025-02-06 12:20:13,119 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/775fc00ba/4dcc2bb3c9db4d978c4400239c2a460d/FLAG77a41246d [2025-02-06 12:20:13,452 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:20:13,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-3.i [2025-02-06 12:20:13,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/775fc00ba/4dcc2bb3c9db4d978c4400239c2a460d/FLAG77a41246d [2025-02-06 12:20:13,482 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/775fc00ba/4dcc2bb3c9db4d978c4400239c2a460d [2025-02-06 12:20:13,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:20:13,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:20:13,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:20:13,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:20:13,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:20:13,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:20:13" (1/1) ... [2025-02-06 12:20:13,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cf7717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:13, skipping insertion in model container [2025-02-06 12:20:13,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:20:13" (1/1) ... [2025-02-06 12:20:13,528 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:20:13,712 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,741 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,743 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,745 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,748 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,765 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,766 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,768 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,770 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,777 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,777 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,779 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,779 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,780 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,780 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,783 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,784 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,784 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,784 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,786 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:13,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:20:13,798 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-06 12:20:13,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4060c616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:13, skipping insertion in model container [2025-02-06 12:20:13,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:20:13,798 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:20:13,800 INFO L158 Benchmark]: Toolchain (without parser) took 310.84ms. Allocated memory is still 142.6MB. Free memory was 104.0MB in the beginning and 82.7MB in the end (delta: 21.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:20:13,800 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 218.1MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:20:13,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.10ms. Allocated memory is still 142.6MB. Free memory was 104.0MB in the beginning and 82.7MB in the end (delta: 21.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:20:13,801 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 218.1MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.10ms. Allocated memory is still 142.6MB. Free memory was 104.0MB in the beginning and 82.7MB in the end (delta: 21.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 757]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-3.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 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:20:15,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:20:15,840 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:20:15,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:20:15,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:20:15,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:20:15,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:20:15,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:20:15,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:20:15,877 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:20:15,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:20:15,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:20:15,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:20:15,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:20:15,878 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:20:15,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:20:15,878 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:20:15,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:20:15,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:20:15,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:20:15,879 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:20:15,879 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:20:15,879 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:20:15,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:20:15,879 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:20:15,879 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:20:15,880 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:20:15,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:20:15,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:20:15,880 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 -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2025-02-06 12:20:16,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:20:16,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:20:16,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:20:16,108 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:20:16,108 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:20:16,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-3.i [2025-02-06 12:20:17,299 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e49042d36/c35106ea45174907a0ffa8bbee8d2431/FLAGdf21dd1bd [2025-02-06 12:20:17,589 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:20:17,590 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-3.i [2025-02-06 12:20:17,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e49042d36/c35106ea45174907a0ffa8bbee8d2431/FLAGdf21dd1bd [2025-02-06 12:20:17,875 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e49042d36/c35106ea45174907a0ffa8bbee8d2431 [2025-02-06 12:20:17,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:20:17,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:20:17,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:20:17,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:20:17,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:20:17,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:20:17" (1/1) ... [2025-02-06 12:20:17,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313bf1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:17, skipping insertion in model container [2025-02-06 12:20:17,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:20:17" (1/1) ... [2025-02-06 12:20:17,920 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:20:18,342 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,387 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,398 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,403 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,413 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,455 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,457 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,459 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,462 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,469 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,469 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,471 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,472 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,472 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,473 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,477 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,477 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,478 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,478 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,480 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:20:18,501 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:20:18,507 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:20:18,522 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,531 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,532 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,533 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,536 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,547 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,548 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,550 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,552 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,557 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,558 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,559 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,559 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,560 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,560 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,562 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,563 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,563 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,564 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,566 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:20:18,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:20:18,570 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:20:18,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:20:18,665 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:20:18,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18 WrapperNode [2025-02-06 12:20:18,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:20:18,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:20:18,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:20:18,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:20:18,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,721 INFO L138 Inliner]: procedures = 179, calls = 425, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1401 [2025-02-06 12:20:18,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:20:18,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:20:18,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:20:18,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:20:18,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,816 INFO L175 MemorySlicer]: Split 403 memory accesses to 2 slices as follows [2, 401]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 98 writes are split as follows [0, 98]. [2025-02-06 12:20:18,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,869 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:20:18,881 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:20:18,881 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:20:18,881 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:20:18,882 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (1/1) ... [2025-02-06 12:20:18,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:20:18,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:18,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:20:18,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:20:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:20:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:20:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:20:18,953 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:20:18,953 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:20:18,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:20:18,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:20:18,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:20:18,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:20:18,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:20:19,108 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:20:19,110 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:20:22,155 INFO L? ?]: Removed 1737 outVars from TransFormulas that were not future-live. [2025-02-06 12:20:22,155 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:20:22,221 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:20:22,221 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:20:22,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:20:22 BoogieIcfgContainer [2025-02-06 12:20:22,222 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:20:22,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:20:22,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:20:22,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:20:22,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:20:17" (1/3) ... [2025-02-06 12:20:22,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292ed8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:20:22, skipping insertion in model container [2025-02-06 12:20:22,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:20:18" (2/3) ... [2025-02-06 12:20:22,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292ed8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:20:22, skipping insertion in model container [2025-02-06 12:20:22,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:20:22" (3/3) ... [2025-02-06 12:20:22,235 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test4-3.i [2025-02-06 12:20:22,257 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:20:22,262 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_nondet_test4-3.i that has 3 procedures, 1626 locations, 1 initial locations, 45 loop locations, and 831 error locations. [2025-02-06 12:20:22,377 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:20:22,383 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;@53b8bf44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:20:22,384 INFO L334 AbstractCegarLoop]: Starting to check reachability of 831 error locations. [2025-02-06 12:20:22,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 1621 states, 788 states have (on average 2.236040609137056) internal successors, (1762), 1613 states have internal predecessors, (1762), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:20:22,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 12:20:22,391 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:22,391 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 12:20:22,392 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:22,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:22,395 INFO L85 PathProgramCache]: Analyzing trace with hash 55562272, now seen corresponding path program 1 times [2025-02-06 12:20:22,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:22,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100090322] [2025-02-06 12:20:22,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:22,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:22,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:22,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:22,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 12:20:22,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 12:20:22,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 12:20:22,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:22,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:22,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 12:20:22,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:22,558 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:22,558 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:22,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100090322] [2025-02-06 12:20:22,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100090322] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:22,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:22,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:20:22,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759060876] [2025-02-06 12:20:22,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:22,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:20:22,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:22,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:20:22,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:20:22,577 INFO L87 Difference]: Start difference. First operand has 1621 states, 788 states have (on average 2.236040609137056) internal successors, (1762), 1613 states have internal predecessors, (1762), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:24,121 INFO L93 Difference]: Finished difference Result 1985 states and 2080 transitions. [2025-02-06 12:20:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:20:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-06 12:20:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:24,135 INFO L225 Difference]: With dead ends: 1985 [2025-02-06 12:20:24,135 INFO L226 Difference]: Without dead ends: 1982 [2025-02-06 12:20:24,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:20:24,137 INFO L435 NwaCegarLoop]: 1670 mSDtfsCounter, 400 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:24,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 2526 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 12:20:24,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2025-02-06 12:20:24,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1617. [2025-02-06 12:20:24,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 795 states have (on average 2.127044025157233) internal successors, (1691), 1609 states have internal predecessors, (1691), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:20:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 1703 transitions. [2025-02-06 12:20:24,196 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 1703 transitions. Word has length 4 [2025-02-06 12:20:24,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:24,197 INFO L471 AbstractCegarLoop]: Abstraction has 1617 states and 1703 transitions. [2025-02-06 12:20:24,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 1703 transitions. [2025-02-06 12:20:24,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 12:20:24,197 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:24,197 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:20:24,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 12:20:24,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:24,398 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr829REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:24,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1857540440, now seen corresponding path program 1 times [2025-02-06 12:20:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:24,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693759290] [2025-02-06 12:20:24,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:24,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:24,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:24,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:24,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 12:20:24,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:20:24,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:20:24,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:24,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:24,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:20:24,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:24,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:20:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:24,533 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:24,533 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693759290] [2025-02-06 12:20:24,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693759290] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:24,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:24,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:20:24,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817029816] [2025-02-06 12:20:24,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:24,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:20:24,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:24,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:20:24,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:20:24,553 INFO L87 Difference]: Start difference. First operand 1617 states and 1703 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:26,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:26,075 INFO L93 Difference]: Finished difference Result 1523 states and 1607 transitions. [2025-02-06 12:20:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:20:26,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 12:20:26,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:26,084 INFO L225 Difference]: With dead ends: 1523 [2025-02-06 12:20:26,084 INFO L226 Difference]: Without dead ends: 1523 [2025-02-06 12:20:26,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:20:26,086 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 1036 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:26,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 1173 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 12:20:26,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2025-02-06 12:20:26,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2025-02-06 12:20:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 795 states have (on average 2.006289308176101) internal successors, (1595), 1515 states have internal predecessors, (1595), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:20:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1607 transitions. [2025-02-06 12:20:26,113 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1607 transitions. Word has length 6 [2025-02-06 12:20:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:26,114 INFO L471 AbstractCegarLoop]: Abstraction has 1523 states and 1607 transitions. [2025-02-06 12:20:26,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1607 transitions. [2025-02-06 12:20:26,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 12:20:26,114 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:26,114 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:20:26,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 12:20:26,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:26,315 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr830REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:26,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:26,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1857540441, now seen corresponding path program 1 times [2025-02-06 12:20:26,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:26,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429336544] [2025-02-06 12:20:26,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:26,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:26,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:26,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:26,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 12:20:26,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:20:26,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:20:26,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:26,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:26,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:20:26,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:26,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:20:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:26,463 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:26,463 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:26,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429336544] [2025-02-06 12:20:26,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429336544] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:26,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:26,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:20:26,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050390408] [2025-02-06 12:20:26,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:26,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:20:26,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:26,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:20:26,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:20:26,465 INFO L87 Difference]: Start difference. First operand 1523 states and 1607 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:28,465 INFO L93 Difference]: Finished difference Result 1847 states and 1951 transitions. [2025-02-06 12:20:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:20:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 12:20:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:28,470 INFO L225 Difference]: With dead ends: 1847 [2025-02-06 12:20:28,470 INFO L226 Difference]: Without dead ends: 1847 [2025-02-06 12:20:28,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:20:28,471 INFO L435 NwaCegarLoop]: 1333 mSDtfsCounter, 527 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:28,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1988 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:20:28,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2025-02-06 12:20:28,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1695. [2025-02-06 12:20:28,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 977 states have (on average 1.9651995905834185) internal successors, (1920), 1687 states have internal predecessors, (1920), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:20:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 1932 transitions. [2025-02-06 12:20:28,491 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 1932 transitions. Word has length 6 [2025-02-06 12:20:28,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:28,491 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 1932 transitions. [2025-02-06 12:20:28,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 1932 transitions. [2025-02-06 12:20:28,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 12:20:28,491 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:28,491 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:20:28,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 12:20:28,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:28,696 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr209REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:28,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1856239611, now seen corresponding path program 1 times [2025-02-06 12:20:28,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:28,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108528280] [2025-02-06 12:20:28,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:28,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:28,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:28,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:28,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 12:20:28,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:20:28,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:20:28,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:28,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:28,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:20:28,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:28,822 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:28,822 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:28,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108528280] [2025-02-06 12:20:28,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108528280] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:28,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:28,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:20:28,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181223232] [2025-02-06 12:20:28,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:28,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:20:28,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:28,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:20:28,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:28,823 INFO L87 Difference]: Start difference. First operand 1695 states and 1932 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:29,279 INFO L93 Difference]: Finished difference Result 2470 states and 2833 transitions. [2025-02-06 12:20:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:20:29,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 12:20:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:29,285 INFO L225 Difference]: With dead ends: 2470 [2025-02-06 12:20:29,285 INFO L226 Difference]: Without dead ends: 2470 [2025-02-06 12:20:29,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:29,286 INFO L435 NwaCegarLoop]: 1566 mSDtfsCounter, 695 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:29,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 4453 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 12:20:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2025-02-06 12:20:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2171. [2025-02-06 12:20:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 1453 states have (on average 1.9373709566414314) internal successors, (2815), 2160 states have internal predecessors, (2815), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:20:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 2833 transitions. [2025-02-06 12:20:29,311 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 2833 transitions. Word has length 6 [2025-02-06 12:20:29,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:29,311 INFO L471 AbstractCegarLoop]: Abstraction has 2171 states and 2833 transitions. [2025-02-06 12:20:29,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:29,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 2833 transitions. [2025-02-06 12:20:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 12:20:29,311 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:29,311 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:29,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 12:20:29,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:29,511 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr202REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:29,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:29,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1708829745, now seen corresponding path program 1 times [2025-02-06 12:20:29,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:29,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687983361] [2025-02-06 12:20:29,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:29,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:29,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:29,517 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:29,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 12:20:29,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 12:20:29,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 12:20:29,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:29,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:29,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:20:29,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:29,633 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:29,633 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:29,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687983361] [2025-02-06 12:20:29,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687983361] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:29,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:29,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:20:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650107153] [2025-02-06 12:20:29,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:29,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:20:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:29,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:20:29,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:20:29,634 INFO L87 Difference]: Start difference. First operand 2171 states and 2833 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:29,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:29,762 INFO L93 Difference]: Finished difference Result 2429 states and 2963 transitions. [2025-02-06 12:20:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:20:29,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-06 12:20:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:29,767 INFO L225 Difference]: With dead ends: 2429 [2025-02-06 12:20:29,767 INFO L226 Difference]: Without dead ends: 2429 [2025-02-06 12:20:29,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:20:29,768 INFO L435 NwaCegarLoop]: 1639 mSDtfsCounter, 508 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:29,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 3140 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:20:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2025-02-06 12:20:29,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2028. [2025-02-06 12:20:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 1310 states have (on average 1.948854961832061) internal successors, (2553), 2017 states have internal predecessors, (2553), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:20:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 2571 transitions. [2025-02-06 12:20:29,790 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 2571 transitions. Word has length 7 [2025-02-06 12:20:29,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:29,791 INFO L471 AbstractCegarLoop]: Abstraction has 2028 states and 2571 transitions. [2025-02-06 12:20:29,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 2571 transitions. [2025-02-06 12:20:29,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 12:20:29,791 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:29,791 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:29,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 12:20:29,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:29,992 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr200REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:29,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:29,992 INFO L85 PathProgramCache]: Analyzing trace with hash -501017128, now seen corresponding path program 1 times [2025-02-06 12:20:29,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:29,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24063679] [2025-02-06 12:20:29,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:29,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:29,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:29,994 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:29,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 12:20:30,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 12:20:30,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 12:20:30,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:30,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:30,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:20:30,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:30,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:30,146 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:30,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24063679] [2025-02-06 12:20:30,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24063679] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:30,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:30,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:20:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912493155] [2025-02-06 12:20:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:30,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:20:30,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:30,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:20:30,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:30,147 INFO L87 Difference]: Start difference. First operand 2028 states and 2571 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:30,726 INFO L93 Difference]: Finished difference Result 2429 states and 2962 transitions. [2025-02-06 12:20:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:20:30,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-06 12:20:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:30,732 INFO L225 Difference]: With dead ends: 2429 [2025-02-06 12:20:30,732 INFO L226 Difference]: Without dead ends: 2425 [2025-02-06 12:20:30,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:30,732 INFO L435 NwaCegarLoop]: 1639 mSDtfsCounter, 510 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 4563 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:30,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 4563 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 12:20:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2025-02-06 12:20:30,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2024. [2025-02-06 12:20:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 1306 states have (on average 1.9509954058192955) internal successors, (2548), 2013 states have internal predecessors, (2548), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:20:30,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2566 transitions. [2025-02-06 12:20:30,755 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2566 transitions. Word has length 10 [2025-02-06 12:20:30,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:30,755 INFO L471 AbstractCegarLoop]: Abstraction has 2024 states and 2566 transitions. [2025-02-06 12:20:30,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2566 transitions. [2025-02-06 12:20:30,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 12:20:30,755 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:30,755 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:30,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 12:20:30,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:30,956 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr825REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:30,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:30,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1499770929, now seen corresponding path program 1 times [2025-02-06 12:20:30,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:30,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289617588] [2025-02-06 12:20:30,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:30,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:30,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:30,959 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:30,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 12:20:31,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 12:20:31,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 12:20:31,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:31,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:31,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:20:31,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:31,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:20:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:31,096 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:31,096 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:31,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289617588] [2025-02-06 12:20:31,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289617588] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:31,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:31,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:20:31,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598866609] [2025-02-06 12:20:31,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:31,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:20:31,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:31,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:20:31,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:31,097 INFO L87 Difference]: Start difference. First operand 2024 states and 2566 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:33,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:33,023 INFO L93 Difference]: Finished difference Result 2009 states and 2528 transitions. [2025-02-06 12:20:33,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:20:33,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-06 12:20:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:33,027 INFO L225 Difference]: With dead ends: 2009 [2025-02-06 12:20:33,028 INFO L226 Difference]: Without dead ends: 2009 [2025-02-06 12:20:33,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:33,028 INFO L435 NwaCegarLoop]: 942 mSDtfsCounter, 1086 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:33,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 1819 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-06 12:20:33,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2025-02-06 12:20:33,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 2001. [2025-02-06 12:20:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1306 states have (on average 1.9157733537519142) internal successors, (2502), 1990 states have internal predecessors, (2502), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:20:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2520 transitions. [2025-02-06 12:20:33,069 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2520 transitions. Word has length 12 [2025-02-06 12:20:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:33,069 INFO L471 AbstractCegarLoop]: Abstraction has 2001 states and 2520 transitions. [2025-02-06 12:20:33,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2520 transitions. [2025-02-06 12:20:33,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 12:20:33,070 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:33,070 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:33,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 12:20:33,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:33,274 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr826REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:33,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:33,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1499770930, now seen corresponding path program 1 times [2025-02-06 12:20:33,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:33,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364567696] [2025-02-06 12:20:33,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:33,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:33,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:33,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:33,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 12:20:33,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 12:20:33,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 12:20:33,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:33,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:33,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:20:33,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:33,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:20:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:33,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:33,439 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364567696] [2025-02-06 12:20:33,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364567696] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:33,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:33,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:20:33,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652993350] [2025-02-06 12:20:33,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:33,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:20:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:33,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:20:33,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:33,440 INFO L87 Difference]: Start difference. First operand 2001 states and 2520 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:36,147 INFO L93 Difference]: Finished difference Result 2283 states and 2693 transitions. [2025-02-06 12:20:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:20:36,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-06 12:20:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:36,152 INFO L225 Difference]: With dead ends: 2283 [2025-02-06 12:20:36,152 INFO L226 Difference]: Without dead ends: 2283 [2025-02-06 12:20:36,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:36,153 INFO L435 NwaCegarLoop]: 1621 mSDtfsCounter, 650 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 3204 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:36,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 3204 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-02-06 12:20:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2025-02-06 12:20:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2115. [2025-02-06 12:20:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 1420 states have (on average 1.8591549295774648) internal successors, (2640), 2104 states have internal predecessors, (2640), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:20:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2658 transitions. [2025-02-06 12:20:36,174 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2658 transitions. Word has length 12 [2025-02-06 12:20:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:36,174 INFO L471 AbstractCegarLoop]: Abstraction has 2115 states and 2658 transitions. [2025-02-06 12:20:36,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2658 transitions. [2025-02-06 12:20:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-06 12:20:36,174 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:36,175 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:36,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 12:20:36,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:36,379 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr826REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:36,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:36,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1068370098, now seen corresponding path program 1 times [2025-02-06 12:20:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:36,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964606873] [2025-02-06 12:20:36,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:36,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:36,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:36,382 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:36,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 12:20:36,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 12:20:36,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 12:20:36,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:36,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:36,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:20:36,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:36,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:20:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:36,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:20:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:36,974 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:36,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964606873] [2025-02-06 12:20:36,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964606873] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:20:36,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:20:36,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:20:36,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308499899] [2025-02-06 12:20:36,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:20:36,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:20:36,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:36,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:20:36,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:20:36,975 INFO L87 Difference]: Start difference. First operand 2115 states and 2658 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:44,983 INFO L93 Difference]: Finished difference Result 2670 states and 3223 transitions. [2025-02-06 12:20:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:20:44,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-02-06 12:20:44,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:44,990 INFO L225 Difference]: With dead ends: 2670 [2025-02-06 12:20:44,990 INFO L226 Difference]: Without dead ends: 2670 [2025-02-06 12:20:44,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:20:44,990 INFO L435 NwaCegarLoop]: 1662 mSDtfsCounter, 2009 mSDsluCounter, 4418 mSDsCounter, 0 mSdLazyCounter, 4925 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 6080 SdHoareTripleChecker+Invalid, 4953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:44,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 6080 Invalid, 4953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4925 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2025-02-06 12:20:44,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2025-02-06 12:20:45,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2279. [2025-02-06 12:20:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 1584 states have (on average 1.8131313131313131) internal successors, (2872), 2268 states have internal predecessors, (2872), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:20:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 2890 transitions. [2025-02-06 12:20:45,022 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 2890 transitions. Word has length 31 [2025-02-06 12:20:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:45,022 INFO L471 AbstractCegarLoop]: Abstraction has 2279 states and 2890 transitions. [2025-02-06 12:20:45,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:45,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 2890 transitions. [2025-02-06 12:20:45,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-06 12:20:45,026 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:45,026 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:45,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 12:20:45,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:45,230 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr744REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:45,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:45,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1853033591, now seen corresponding path program 1 times [2025-02-06 12:20:45,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:45,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291284839] [2025-02-06 12:20:45,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:45,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:45,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:45,234 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:45,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 12:20:45,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-06 12:20:45,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-06 12:20:45,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:45,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:45,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:20:45,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:45,471 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:45,471 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:45,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291284839] [2025-02-06 12:20:45,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291284839] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:45,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:45,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:20:45,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602418201] [2025-02-06 12:20:45,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:45,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:20:45,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:45,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:20:45,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:45,475 INFO L87 Difference]: Start difference. First operand 2279 states and 2890 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:45,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:45,531 INFO L93 Difference]: Finished difference Result 1968 states and 2454 transitions. [2025-02-06 12:20:45,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:20:45,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2025-02-06 12:20:45,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:45,537 INFO L225 Difference]: With dead ends: 1968 [2025-02-06 12:20:45,537 INFO L226 Difference]: Without dead ends: 1968 [2025-02-06 12:20:45,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:45,538 INFO L435 NwaCegarLoop]: 1485 mSDtfsCounter, 56 mSDsluCounter, 2897 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4382 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:45,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4382 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:20:45,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2025-02-06 12:20:45,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1966. [2025-02-06 12:20:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1294 states have (on average 1.8809891808346213) internal successors, (2434), 1955 states have internal predecessors, (2434), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:20:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2452 transitions. [2025-02-06 12:20:45,558 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2452 transitions. Word has length 47 [2025-02-06 12:20:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:45,559 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 2452 transitions. [2025-02-06 12:20:45,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2452 transitions. [2025-02-06 12:20:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-06 12:20:45,561 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:45,561 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:45,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 12:20:45,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:45,762 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr744REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:45,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:45,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2145534289, now seen corresponding path program 1 times [2025-02-06 12:20:45,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:45,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995983337] [2025-02-06 12:20:45,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:45,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:45,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:45,768 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:45,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 12:20:45,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 12:20:45,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 12:20:45,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:45,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:45,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:20:45,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:45,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:20:45,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:20:46,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:20:46,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 12:20:46,317 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:20:46,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 12:20:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:46,329 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:46,329 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:46,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995983337] [2025-02-06 12:20:46,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995983337] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:46,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:46,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:20:46,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478984359] [2025-02-06 12:20:46,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:46,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:20:46,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:46,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:20:46,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:46,332 INFO L87 Difference]: Start difference. First operand 1966 states and 2452 transitions. Second operand has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:48,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:48,312 INFO L93 Difference]: Finished difference Result 1882 states and 2327 transitions. [2025-02-06 12:20:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:20:48,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-02-06 12:20:48,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:48,317 INFO L225 Difference]: With dead ends: 1882 [2025-02-06 12:20:48,318 INFO L226 Difference]: Without dead ends: 1882 [2025-02-06 12:20:48,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:48,318 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 910 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:48,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1088 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:20:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2025-02-06 12:20:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1700. [2025-02-06 12:20:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1112 states have (on average 1.775179856115108) internal successors, (1974), 1689 states have internal predecessors, (1974), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:20:48,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 1992 transitions. [2025-02-06 12:20:48,335 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 1992 transitions. Word has length 55 [2025-02-06 12:20:48,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:48,335 INFO L471 AbstractCegarLoop]: Abstraction has 1700 states and 1992 transitions. [2025-02-06 12:20:48,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:48,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 1992 transitions. [2025-02-06 12:20:48,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-06 12:20:48,338 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:48,338 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:48,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 12:20:48,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:48,542 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr737REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:48,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash -413782628, now seen corresponding path program 1 times [2025-02-06 12:20:48,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:48,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099532585] [2025-02-06 12:20:48,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:48,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:48,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:48,548 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:48,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 12:20:48,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-06 12:20:48,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-06 12:20:48,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:48,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:48,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:20:48,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:48,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:20:48,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:20:48,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 12:20:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:48,765 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:48,765 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:48,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099532585] [2025-02-06 12:20:48,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099532585] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:48,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:48,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:20:48,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248479752] [2025-02-06 12:20:48,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:48,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:20:48,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:48,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:20:48,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:48,766 INFO L87 Difference]: Start difference. First operand 1700 states and 1992 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:51,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:51,024 INFO L93 Difference]: Finished difference Result 1699 states and 1990 transitions. [2025-02-06 12:20:51,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:20:51,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-02-06 12:20:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:51,031 INFO L225 Difference]: With dead ends: 1699 [2025-02-06 12:20:51,032 INFO L226 Difference]: Without dead ends: 1699 [2025-02-06 12:20:51,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:20:51,032 INFO L435 NwaCegarLoop]: 1411 mSDtfsCounter, 2 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:51,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3562 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-06 12:20:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2025-02-06 12:20:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1699. [2025-02-06 12:20:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1112 states have (on average 1.7733812949640289) internal successors, (1972), 1688 states have internal predecessors, (1972), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:20:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 1990 transitions. [2025-02-06 12:20:51,049 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 1990 transitions. Word has length 60 [2025-02-06 12:20:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:51,049 INFO L471 AbstractCegarLoop]: Abstraction has 1699 states and 1990 transitions. [2025-02-06 12:20:51,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 1990 transitions. [2025-02-06 12:20:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-06 12:20:51,050 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:51,050 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:51,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 12:20:51,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:51,254 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr738REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:51,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:51,254 INFO L85 PathProgramCache]: Analyzing trace with hash -413782627, now seen corresponding path program 1 times [2025-02-06 12:20:51,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:51,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809962300] [2025-02-06 12:20:51,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:51,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:51,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:51,257 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:51,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 12:20:51,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-06 12:20:51,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-06 12:20:51,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:51,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:51,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 12:20:51,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:51,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:20:51,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:20:51,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 12:20:51,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-06 12:20:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:51,519 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:51,519 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:51,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809962300] [2025-02-06 12:20:51,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809962300] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:51,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:51,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:20:51,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738545481] [2025-02-06 12:20:51,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:51,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:20:51,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:51,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:20:51,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:20:51,520 INFO L87 Difference]: Start difference. First operand 1699 states and 1990 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:54,062 INFO L93 Difference]: Finished difference Result 1698 states and 1988 transitions. [2025-02-06 12:20:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:20:54,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-02-06 12:20:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:54,067 INFO L225 Difference]: With dead ends: 1698 [2025-02-06 12:20:54,067 INFO L226 Difference]: Without dead ends: 1698 [2025-02-06 12:20:54,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:20:54,068 INFO L435 NwaCegarLoop]: 1411 mSDtfsCounter, 1 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3605 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:54,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3605 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-06 12:20:54,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2025-02-06 12:20:54,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1698. [2025-02-06 12:20:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1110 states have (on average 1.7747747747747749) internal successors, (1970), 1687 states have internal predecessors, (1970), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:20:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 1988 transitions. [2025-02-06 12:20:54,080 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 1988 transitions. Word has length 60 [2025-02-06 12:20:54,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:54,080 INFO L471 AbstractCegarLoop]: Abstraction has 1698 states and 1988 transitions. [2025-02-06 12:20:54,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:20:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 1988 transitions. [2025-02-06 12:20:54,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 12:20:54,081 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:54,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:54,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 12:20:54,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:54,285 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:54,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:54,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1292842727, now seen corresponding path program 1 times [2025-02-06 12:20:54,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:54,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597050720] [2025-02-06 12:20:54,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:54,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:54,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:54,288 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:54,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 12:20:54,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-06 12:20:54,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 12:20:54,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:54,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:54,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:20:54,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:54,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:20:54,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 12:20:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:54,545 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:54,545 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:54,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597050720] [2025-02-06 12:20:54,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597050720] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:54,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:54,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:20:54,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280628976] [2025-02-06 12:20:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:54,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:20:54,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:54,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:20:54,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:20:54,546 INFO L87 Difference]: Start difference. First operand 1698 states and 1988 transitions. Second operand has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:20:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:57,423 INFO L93 Difference]: Finished difference Result 1716 states and 2018 transitions. [2025-02-06 12:20:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:20:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 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 68 [2025-02-06 12:20:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:57,432 INFO L225 Difference]: With dead ends: 1716 [2025-02-06 12:20:57,432 INFO L226 Difference]: Without dead ends: 1716 [2025-02-06 12:20:57,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 12:20:57,432 INFO L435 NwaCegarLoop]: 1400 mSDtfsCounter, 6 mSDsluCounter, 4352 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5752 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:57,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5752 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-02-06 12:20:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2025-02-06 12:20:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1707. [2025-02-06 12:20:57,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1118 states have (on average 1.7719141323792487) internal successors, (1981), 1694 states have internal predecessors, (1981), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2025-02-06 12:20:57,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2008 transitions. [2025-02-06 12:20:57,461 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2008 transitions. Word has length 68 [2025-02-06 12:20:57,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:57,462 INFO L471 AbstractCegarLoop]: Abstraction has 1707 states and 2008 transitions. [2025-02-06 12:20:57,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:20:57,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2008 transitions. [2025-02-06 12:20:57,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 12:20:57,463 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:57,463 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:57,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 12:20:57,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:57,668 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr734REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:57,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:57,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1292842726, now seen corresponding path program 1 times [2025-02-06 12:20:57,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:57,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421874996] [2025-02-06 12:20:57,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:57,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:57,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:57,671 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:57,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 12:20:57,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-06 12:20:57,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 12:20:57,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:57,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:57,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:20:57,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:57,920 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:20:57,920 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:57,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421874996] [2025-02-06 12:20:57,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421874996] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:20:57,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:20:57,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:20:57,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614256199] [2025-02-06 12:20:57,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:20:57,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:20:57,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:57,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:20:57,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:57,924 INFO L87 Difference]: Start difference. First operand 1707 states and 2008 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:20:57,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:57,964 INFO L93 Difference]: Finished difference Result 1701 states and 1994 transitions. [2025-02-06 12:20:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:20:57,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 68 [2025-02-06 12:20:57,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:57,971 INFO L225 Difference]: With dead ends: 1701 [2025-02-06 12:20:57,972 INFO L226 Difference]: Without dead ends: 1701 [2025-02-06 12:20:57,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:20:57,972 INFO L435 NwaCegarLoop]: 1410 mSDtfsCounter, 0 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:57,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4222 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:20:57,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2025-02-06 12:20:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1701. [2025-02-06 12:20:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1112 states have (on average 1.7742805755395683) internal successors, (1973), 1690 states have internal predecessors, (1973), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 12:20:57,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 1994 transitions. [2025-02-06 12:20:57,997 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 1994 transitions. Word has length 68 [2025-02-06 12:20:57,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:57,997 INFO L471 AbstractCegarLoop]: Abstraction has 1701 states and 1994 transitions. [2025-02-06 12:20:57,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:20:57,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 1994 transitions. [2025-02-06 12:20:57,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-06 12:20:57,999 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:57,999 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:58,013 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 [2025-02-06 12:20:58,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:58,200 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:58,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:58,201 INFO L85 PathProgramCache]: Analyzing trace with hash 258018263, now seen corresponding path program 1 times [2025-02-06 12:20:58,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:58,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619819457] [2025-02-06 12:20:58,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:20:58,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:58,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:58,204 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:58,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 12:20:58,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 12:20:58,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 12:20:58,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:20:58,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:20:58,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:20:58,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:20:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:58,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:20:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:20:58,524 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:20:58,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619819457] [2025-02-06 12:20:58,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619819457] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:20:58,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:20:58,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 12:20:58,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841535527] [2025-02-06 12:20:58,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:20:58,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:20:58,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:20:58,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:20:58,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:20:58,526 INFO L87 Difference]: Start difference. First operand 1701 states and 1994 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:20:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:20:58,659 INFO L93 Difference]: Finished difference Result 1713 states and 2013 transitions. [2025-02-06 12:20:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:20:58,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2025-02-06 12:20:58,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:20:58,662 INFO L225 Difference]: With dead ends: 1713 [2025-02-06 12:20:58,663 INFO L226 Difference]: Without dead ends: 1713 [2025-02-06 12:20:58,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-06 12:20:58,664 INFO L435 NwaCegarLoop]: 1409 mSDtfsCounter, 5 mSDsluCounter, 7017 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8426 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:20:58,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 8426 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:20:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2025-02-06 12:20:58,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1711. [2025-02-06 12:20:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1121 states have (on average 1.7734165923282783) internal successors, (1988), 1699 states have internal predecessors, (1988), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 12:20:58,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2009 transitions. [2025-02-06 12:20:58,677 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2009 transitions. Word has length 69 [2025-02-06 12:20:58,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:20:58,678 INFO L471 AbstractCegarLoop]: Abstraction has 1711 states and 2009 transitions. [2025-02-06 12:20:58,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:20:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2009 transitions. [2025-02-06 12:20:58,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-06 12:20:58,679 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:20:58,679 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:20:58,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-06 12:20:58,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:58,880 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:20:58,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:20:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1850378393, now seen corresponding path program 2 times [2025-02-06 12:20:58,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:20:58,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512198042] [2025-02-06 12:20:58,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:20:58,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:20:58,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:20:58,884 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:20:58,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 12:20:59,036 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-02-06 12:21:13,198 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-02-06 12:21:13,198 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:21:13,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:21:13,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 12:21:13,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:21:13,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:21:13,304 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:21:13,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 12:21:13,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:21:13,428 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:21:13,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-06 12:21:13,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-02-06 12:21:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 12:21:13,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:21:13,524 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-06 12:21:13,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-02-06 12:21:13,532 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_852 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem32#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_852) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2025-02-06 12:21:13,534 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:21:13,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512198042] [2025-02-06 12:21:13,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512198042] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:21:13,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1171289988] [2025-02-06 12:21:13,534 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:21:13,534 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:21:13,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:21:13,558 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 12:21:13,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2025-02-06 12:21:13,772 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-02-06 12:21:14,329 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-02-06 12:21:14,329 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:21:14,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:21:14,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:21:14,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:21:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:14,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:21:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:14,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1171289988] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:21:14,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:21:14,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-02-06 12:21:14,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664165554] [2025-02-06 12:21:14,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:21:14,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 12:21:14,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:21:14,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 12:21:14,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2025-02-06 12:21:14,661 INFO L87 Difference]: Start difference. First operand 1711 states and 2009 transitions. Second operand has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:21:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:21:23,751 INFO L93 Difference]: Finished difference Result 1727 states and 2032 transitions. [2025-02-06 12:21:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 12:21:23,751 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 72 [2025-02-06 12:21:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:21:23,758 INFO L225 Difference]: With dead ends: 1727 [2025-02-06 12:21:23,758 INFO L226 Difference]: Without dead ends: 1721 [2025-02-06 12:21:23,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=386, Invalid=1969, Unknown=1, NotChecked=94, Total=2450 [2025-02-06 12:21:23,759 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 930 mSDsluCounter, 11141 mSDsCounter, 0 mSdLazyCounter, 8449 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 12061 SdHoareTripleChecker+Invalid, 8484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 8449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:21:23,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 12061 Invalid, 8484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 8449 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2025-02-06 12:21:23,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2025-02-06 12:21:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1719. [2025-02-06 12:21:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1130 states have (on average 1.7672566371681415) internal successors, (1997), 1707 states have internal predecessors, (1997), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 12:21:23,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2018 transitions. [2025-02-06 12:21:23,771 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2018 transitions. Word has length 72 [2025-02-06 12:21:23,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:21:23,771 INFO L471 AbstractCegarLoop]: Abstraction has 1719 states and 2018 transitions. [2025-02-06 12:21:23,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:21:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2018 transitions. [2025-02-06 12:21:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-06 12:21:23,772 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:21:23,772 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:21:23,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2025-02-06 12:21:23,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 12:21:24,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:24,176 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr734REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:21:24,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:21:24,176 INFO L85 PathProgramCache]: Analyzing trace with hash -624091174, now seen corresponding path program 1 times [2025-02-06 12:21:24,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:21:24,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732504794] [2025-02-06 12:21:24,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:21:24,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:24,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:21:24,179 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:21:24,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 12:21:24,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-06 12:21:24,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-06 12:21:24,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:21:24,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:21:24,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 12:21:24,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:21:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:24,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:21:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:24,930 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:21:24,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732504794] [2025-02-06 12:21:24,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732504794] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:21:24,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:21:24,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-06 12:21:24,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658128194] [2025-02-06 12:21:24,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:21:24,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 12:21:24,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:21:24,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 12:21:24,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-06 12:21:24,931 INFO L87 Difference]: Start difference. First operand 1719 states and 2018 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:21:26,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:21:26,042 INFO L93 Difference]: Finished difference Result 1743 states and 2057 transitions. [2025-02-06 12:21:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 12:21:26,043 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 78 [2025-02-06 12:21:26,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:21:26,045 INFO L225 Difference]: With dead ends: 1743 [2025-02-06 12:21:26,045 INFO L226 Difference]: Without dead ends: 1737 [2025-02-06 12:21:26,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 12:21:26,046 INFO L435 NwaCegarLoop]: 1409 mSDtfsCounter, 18 mSDsluCounter, 15455 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 16864 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:21:26,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 16864 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 12:21:26,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2025-02-06 12:21:26,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1737. [2025-02-06 12:21:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1148 states have (on average 1.759581881533101) internal successors, (2020), 1725 states have internal predecessors, (2020), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 12:21:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2041 transitions. [2025-02-06 12:21:26,061 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2041 transitions. Word has length 78 [2025-02-06 12:21:26,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:21:26,061 INFO L471 AbstractCegarLoop]: Abstraction has 1737 states and 2041 transitions. [2025-02-06 12:21:26,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:21:26,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2041 transitions. [2025-02-06 12:21:26,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-06 12:21:26,062 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:21:26,063 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:21:26,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 12:21:26,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:26,263 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr734REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:21:26,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:21:26,263 INFO L85 PathProgramCache]: Analyzing trace with hash 124452442, now seen corresponding path program 2 times [2025-02-06 12:21:26,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:21:26,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710174442] [2025-02-06 12:21:26,264 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:21:26,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:26,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:21:26,267 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:21:26,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 12:21:26,430 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 90 statements into 2 equivalence classes. [2025-02-06 12:21:35,671 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 90 of 90 statements. [2025-02-06 12:21:35,672 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:21:35,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:21:35,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 12:21:35,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:21:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:35,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:21:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:21:37,196 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:21:37,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710174442] [2025-02-06 12:21:37,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710174442] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:21:37,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:21:37,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2025-02-06 12:21:37,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824331307] [2025-02-06 12:21:37,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:21:37,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-02-06 12:21:37,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:21:37,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-02-06 12:21:37,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2025-02-06 12:21:37,198 INFO L87 Difference]: Start difference. First operand 1737 states and 2041 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:21:41,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:21:41,655 INFO L93 Difference]: Finished difference Result 1779 states and 2116 transitions. [2025-02-06 12:21:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-02-06 12:21:41,655 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2025-02-06 12:21:41,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:21:41,658 INFO L225 Difference]: With dead ends: 1779 [2025-02-06 12:21:41,658 INFO L226 Difference]: Without dead ends: 1773 [2025-02-06 12:21:41,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2784, Invalid=5958, Unknown=0, NotChecked=0, Total=8742 [2025-02-06 12:21:41,660 INFO L435 NwaCegarLoop]: 1409 mSDtfsCounter, 42 mSDsluCounter, 35117 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 36526 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:21:41,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 36526 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 12:21:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2025-02-06 12:21:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1773. [2025-02-06 12:21:41,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1184 states have (on average 1.7466216216216217) internal successors, (2068), 1761 states have internal predecessors, (2068), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 12:21:41,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2089 transitions. [2025-02-06 12:21:41,682 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2089 transitions. Word has length 90 [2025-02-06 12:21:41,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:21:41,682 INFO L471 AbstractCegarLoop]: Abstraction has 1773 states and 2089 transitions. [2025-02-06 12:21:41,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:21:41,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2089 transitions. [2025-02-06 12:21:41,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-06 12:21:41,683 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:21:41,683 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:21:41,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-06 12:21:41,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:41,883 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr734REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-06 12:21:41,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:21:41,884 INFO L85 PathProgramCache]: Analyzing trace with hash 897958810, now seen corresponding path program 3 times [2025-02-06 12:21:41,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:21:41,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302021332] [2025-02-06 12:21:41,884 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 12:21:41,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:21:41,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:21:41,886 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:21:41,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 12:21:42,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 112 statements into 23 equivalence classes.