./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:10:57,457 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:10:57,559 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:10:57,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:10:57,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:10:57,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:10:57,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:10:57,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:10:57,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:10:57,591 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:10:57,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:10:57,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:10:57,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:10:57,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:10:57,592 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:10:57,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:10:57,592 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:10:57,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:10:57,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:10:57,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:10:57,592 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:10:57,593 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:10:57,593 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:10:57,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:10:57,593 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:10:57,593 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:10:57,593 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:10:57,593 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:10:57,593 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:10:57,593 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:10:57,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:10:57,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:10:57,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:10:57,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:10:57,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:10:57,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:10:57,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:10:57,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:10:57,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:10:57,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:10:57,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:10:57,598 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:10:57,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:10:57,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:10:57,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:10:57,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:10:57,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:10:57,599 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 -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2025-01-10 00:10:57,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:10:57,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:10:57,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:10:57,979 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:10:57,980 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:10:57,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-01-10 00:10:59,359 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/439707460/a64ecf7c3d07423b9a3e8e3ab74b2ff9/FLAGa8bf88652 [2025-01-10 00:10:59,704 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:10:59,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-01-10 00:10:59,727 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/439707460/a64ecf7c3d07423b9a3e8e3ab74b2ff9/FLAGa8bf88652 [2025-01-10 00:10:59,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/439707460/a64ecf7c3d07423b9a3e8e3ab74b2ff9 [2025-01-10 00:10:59,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:10:59,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:10:59,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:10:59,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:10:59,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:10:59,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:10:59" (1/1) ... [2025-01-10 00:10:59,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0696cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:59, skipping insertion in model container [2025-01-10 00:10:59,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:10:59" (1/1) ... [2025-01-10 00:10:59,808 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:11:00,197 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,240 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,247 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,252 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,258 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,268 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,271 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,273 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,278 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,279 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,279 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,287 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:00,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:11:00,312 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-01-10 00:11:00,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a22c969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:00, skipping insertion in model container [2025-01-10 00:11:00,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:11:00,315 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-10 00:11:00,318 INFO L158 Benchmark]: Toolchain (without parser) took 565.49ms. Allocated memory is still 142.6MB. Free memory was 110.9MB in the beginning and 94.0MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:11:00,319 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 201.3MB. Free memory was 123.2MB in the beginning and 122.9MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:11:00,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 560.16ms. Allocated memory is still 142.6MB. Free memory was 110.9MB in the beginning and 94.0MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:11:00,320 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 201.3MB. Free memory was 123.2MB in the beginning and 122.9MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 560.16ms. Allocated memory is still 142.6MB. Free memory was 110.9MB in the beginning and 94.0MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 753]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:11:02,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:11:02,717 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 00:11:02,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:11:02,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:11:02,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:11:02,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:11:02,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:11:02,756 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:11:02,756 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:11:02,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:11:02,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:11:02,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:11:02,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:11:02,756 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:11:02,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:11:02,757 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:11:02,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:11:02,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:11:02,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:11:02,757 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:11:02,757 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:11:02,757 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:11:02,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:11:02,757 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:11:02,757 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 00:11:02,759 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 00:11:02,759 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:11:02,759 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:11:02,759 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:11:02,759 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:11:02,760 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:11:02,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:11:02,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:11:02,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:11:02,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:11:02,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:11:02,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:11:02,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:11:02,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:11:02,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:11:02,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:11:02,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:11:02,761 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 00:11:02,762 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 00:11:02,762 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:11:02,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:11:02,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:11:02,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:11:02,762 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 -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2025-01-10 00:11:03,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:11:03,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:11:03,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:11:03,069 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:11:03,070 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:11:03,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-01-10 00:11:04,447 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8c1c150d4/8114fcab691d41e9803ec1b3d9db4f12/FLAGe6c39afba [2025-01-10 00:11:04,733 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:11:04,733 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-01-10 00:11:04,766 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8c1c150d4/8114fcab691d41e9803ec1b3d9db4f12/FLAGe6c39afba [2025-01-10 00:11:04,790 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8c1c150d4/8114fcab691d41e9803ec1b3d9db4f12 [2025-01-10 00:11:04,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:11:04,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:11:04,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:11:04,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:11:04,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:11:04,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:11:04" (1/1) ... [2025-01-10 00:11:04,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb556ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:04, skipping insertion in model container [2025-01-10 00:11:04,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:11:04" (1/1) ... [2025-01-10 00:11:04,849 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:11:05,213 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,255 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,259 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,264 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,272 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,290 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,291 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,294 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,297 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,298 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,299 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,303 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:11:05,329 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-10 00:11:05,341 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:11:05,375 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,405 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,412 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,416 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,422 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,440 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,440 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,442 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,445 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,445 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,449 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,453 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:11:05,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:11:05,462 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:11:05,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:11:05,575 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:11:05,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05 WrapperNode [2025-01-10 00:11:05,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:11:05,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:11:05,578 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:11:05,578 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:11:05,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,666 INFO L138 Inliner]: procedures = 179, calls = 221, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 729 [2025-01-10 00:11:05,667 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:11:05,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:11:05,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:11:05,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:11:05,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,761 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2025-01-10 00:11:05,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,823 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:11:05,843 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:11:05,843 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:11:05,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:11:05,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (1/1) ... [2025-01-10 00:11:05,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:11:05,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:05,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 00:11:05,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 00:11:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-01-10 00:11:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-01-10 00:11:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-10 00:11:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-01-10 00:11:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-01-10 00:11:05,912 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-01-10 00:11:05,912 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-10 00:11:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:11:05,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:11:06,129 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:11:06,131 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:11:06,133 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:11:06,186 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:11:09,194 INFO L? ?]: Removed 893 outVars from TransFormulas that were not future-live. [2025-01-10 00:11:09,195 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:11:09,223 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:11:09,223 INFO L312 CfgBuilder]: Removed 18 assume(true) statements. [2025-01-10 00:11:09,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:11:09 BoogieIcfgContainer [2025-01-10 00:11:09,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:11:09,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:11:09,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:11:09,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:11:09,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:11:04" (1/3) ... [2025-01-10 00:11:09,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f704e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:11:09, skipping insertion in model container [2025-01-10 00:11:09,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05" (2/3) ... [2025-01-10 00:11:09,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f704e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:11:09, skipping insertion in model container [2025-01-10 00:11:09,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:11:09" (3/3) ... [2025-01-10 00:11:09,236 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test1-2.i [2025-01-10 00:11:09,249 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:11:09,251 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_nondet_test1-2.i that has 3 procedures, 836 locations, 1 initial locations, 25 loop locations, and 425 error locations. [2025-01-10 00:11:09,323 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:11:09,337 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;@f5550c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:11:09,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2025-01-10 00:11:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 831 states, 404 states have (on average 2.237623762376238) internal successors, (904), 826 states have internal predecessors, (904), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:09,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:11:09,351 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:09,351 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:11:09,352 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:09,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash 45872282, now seen corresponding path program 1 times [2025-01-10 00:11:09,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:09,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898130165] [2025-01-10 00:11:09,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:09,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:09,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:09,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:09,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 00:11:09,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:11:09,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:11:09,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:09,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:09,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-10 00:11:09,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:09,549 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:09,549 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:09,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898130165] [2025-01-10 00:11:09,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898130165] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:09,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:09,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:11:09,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437647797] [2025-01-10 00:11:09,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:09,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:11:09,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:09,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:11:09,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:11:09,583 INFO L87 Difference]: Start difference. First operand has 831 states, 404 states have (on average 2.237623762376238) internal successors, (904), 826 states have internal predecessors, (904), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:09,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:09,647 INFO L93 Difference]: Finished difference Result 821 states and 859 transitions. [2025-01-10 00:11:09,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:11:09,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2025-01-10 00:11:09,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:09,665 INFO L225 Difference]: With dead ends: 821 [2025-01-10 00:11:09,665 INFO L226 Difference]: Without dead ends: 819 [2025-01-10 00:11:09,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:11:09,669 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:09,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:11:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2025-01-10 00:11:09,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2025-01-10 00:11:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 398 states have (on average 2.1381909547738696) internal successors, (851), 814 states have internal predecessors, (851), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 857 transitions. [2025-01-10 00:11:09,761 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 857 transitions. Word has length 5 [2025-01-10 00:11:09,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:09,762 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 857 transitions. [2025-01-10 00:11:09,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:09,762 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 857 transitions. [2025-01-10 00:11:09,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:11:09,763 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:09,763 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:11:09,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 00:11:09,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:09,964 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:09,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:09,965 INFO L85 PathProgramCache]: Analyzing trace with hash 45872344, now seen corresponding path program 1 times [2025-01-10 00:11:09,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:09,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144869351] [2025-01-10 00:11:09,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:09,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:09,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:09,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:09,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 00:11:10,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:11:10,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:11:10,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:10,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:10,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:11:10,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:10,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:11:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:10,154 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:10,154 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:10,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144869351] [2025-01-10 00:11:10,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144869351] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:10,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:10,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:11:10,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105368264] [2025-01-10 00:11:10,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:10,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:11:10,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:10,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:11:10,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:11:10,156 INFO L87 Difference]: Start difference. First operand 819 states and 857 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:11,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:11,434 INFO L93 Difference]: Finished difference Result 771 states and 810 transitions. [2025-01-10 00:11:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:11:11,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2025-01-10 00:11:11,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:11,438 INFO L225 Difference]: With dead ends: 771 [2025-01-10 00:11:11,438 INFO L226 Difference]: Without dead ends: 771 [2025-01-10 00:11:11,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:11:11,439 INFO L435 NwaCegarLoop]: 498 mSDtfsCounter, 513 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:11,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 609 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-10 00:11:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2025-01-10 00:11:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 770. [2025-01-10 00:11:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 398 states have (on average 2.0150753768844223) internal successors, (802), 765 states have internal predecessors, (802), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 808 transitions. [2025-01-10 00:11:11,463 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 808 transitions. Word has length 5 [2025-01-10 00:11:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:11,463 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 808 transitions. [2025-01-10 00:11:11,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 808 transitions. [2025-01-10 00:11:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:11:11,464 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:11,464 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:11:11,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 00:11:11,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:11,665 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:11,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:11,665 INFO L85 PathProgramCache]: Analyzing trace with hash 45872345, now seen corresponding path program 1 times [2025-01-10 00:11:11,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:11,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767848086] [2025-01-10 00:11:11,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:11,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:11,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:11,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:11,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 00:11:11,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:11:11,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:11:11,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:11,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:11,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:11:11,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:11,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:11:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:11,822 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:11,822 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767848086] [2025-01-10 00:11:11,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767848086] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:11,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:11,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:11:11,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512903732] [2025-01-10 00:11:11,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:11,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:11:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:11,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:11:11,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:11:11,824 INFO L87 Difference]: Start difference. First operand 770 states and 808 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:12,921 INFO L93 Difference]: Finished difference Result 843 states and 885 transitions. [2025-01-10 00:11:12,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:11:12,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2025-01-10 00:11:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:12,926 INFO L225 Difference]: With dead ends: 843 [2025-01-10 00:11:12,926 INFO L226 Difference]: Without dead ends: 843 [2025-01-10 00:11:12,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:11:12,927 INFO L435 NwaCegarLoop]: 677 mSDtfsCounter, 265 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:12,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 954 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-10 00:11:12,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2025-01-10 00:11:12,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 796. [2025-01-10 00:11:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 435 states have (on average 1.9885057471264367) internal successors, (865), 791 states have internal predecessors, (865), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 871 transitions. [2025-01-10 00:11:12,944 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 871 transitions. Word has length 5 [2025-01-10 00:11:12,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:12,945 INFO L471 AbstractCegarLoop]: Abstraction has 796 states and 871 transitions. [2025-01-10 00:11:12,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 871 transitions. [2025-01-10 00:11:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:11:12,945 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:12,945 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:11:12,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 00:11:13,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:13,148 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr314REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:13,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:13,148 INFO L85 PathProgramCache]: Analyzing trace with hash 46750123, now seen corresponding path program 1 times [2025-01-10 00:11:13,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:13,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373808374] [2025-01-10 00:11:13,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:13,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:13,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:13,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:13,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 00:11:13,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:11:13,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:11:13,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:13,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:13,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:11:13,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:13,279 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:13,280 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373808374] [2025-01-10 00:11:13,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373808374] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:13,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:13,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:11:13,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000348181] [2025-01-10 00:11:13,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:13,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:11:13,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:13,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:11:13,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:11:13,281 INFO L87 Difference]: Start difference. First operand 796 states and 871 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:13,928 INFO L93 Difference]: Finished difference Result 1103 states and 1220 transitions. [2025-01-10 00:11:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:11:13,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2025-01-10 00:11:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:13,934 INFO L225 Difference]: With dead ends: 1103 [2025-01-10 00:11:13,935 INFO L226 Difference]: Without dead ends: 1103 [2025-01-10 00:11:13,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:11:13,936 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 328 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2343 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:13,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 2343 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-10 00:11:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2025-01-10 00:11:13,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 885. [2025-01-10 00:11:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 524 states have (on average 1.9351145038167938) internal successors, (1014), 880 states have internal predecessors, (1014), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1020 transitions. [2025-01-10 00:11:13,963 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1020 transitions. Word has length 5 [2025-01-10 00:11:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:13,964 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1020 transitions. [2025-01-10 00:11:13,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1020 transitions. [2025-01-10 00:11:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-10 00:11:13,965 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:13,965 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:13,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 00:11:14,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:14,166 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr318ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:14,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:14,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1977533485, now seen corresponding path program 1 times [2025-01-10 00:11:14,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:14,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055380881] [2025-01-10 00:11:14,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:14,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:14,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:14,170 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:14,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 00:11:14,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 00:11:14,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 00:11:14,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:14,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:14,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:11:14,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:14,274 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:14,274 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:14,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055380881] [2025-01-10 00:11:14,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055380881] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:14,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:14,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:11:14,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501569544] [2025-01-10 00:11:14,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:14,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:11:14,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:14,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:11:14,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:11:14,275 INFO L87 Difference]: Start difference. First operand 885 states and 1020 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2025-01-10 00:11:14,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:14,308 INFO L93 Difference]: Finished difference Result 885 states and 1019 transitions. [2025-01-10 00:11:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:11:14,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2025-01-10 00:11:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:14,312 INFO L225 Difference]: With dead ends: 885 [2025-01-10 00:11:14,312 INFO L226 Difference]: Without dead ends: 885 [2025-01-10 00:11:14,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:11:14,313 INFO L435 NwaCegarLoop]: 794 mSDtfsCounter, 7 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:14,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2378 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:11:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2025-01-10 00:11:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2025-01-10 00:11:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 524 states have (on average 1.933206106870229) internal successors, (1013), 880 states have internal predecessors, (1013), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:14,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1019 transitions. [2025-01-10 00:11:14,332 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1019 transitions. Word has length 7 [2025-01-10 00:11:14,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:14,332 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1019 transitions. [2025-01-10 00:11:14,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2025-01-10 00:11:14,332 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1019 transitions. [2025-01-10 00:11:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-10 00:11:14,333 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:14,333 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:14,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 00:11:14,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:14,534 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr424ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:14,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:14,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1042610665, now seen corresponding path program 1 times [2025-01-10 00:11:14,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:14,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789996046] [2025-01-10 00:11:14,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:14,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:14,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:14,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:14,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 00:11:14,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 00:11:14,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 00:11:14,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:14,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:14,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 00:11:14,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:14,652 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:14,653 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:14,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789996046] [2025-01-10 00:11:14,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789996046] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:14,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:14,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:11:14,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209543428] [2025-01-10 00:11:14,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:14,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:11:14,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:14,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:11:14,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:11:14,654 INFO L87 Difference]: Start difference. First operand 885 states and 1019 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:15,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:15,629 INFO L93 Difference]: Finished difference Result 886 states and 1019 transitions. [2025-01-10 00:11:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:11:15,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-10 00:11:15,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:15,634 INFO L225 Difference]: With dead ends: 886 [2025-01-10 00:11:15,634 INFO L226 Difference]: Without dead ends: 879 [2025-01-10 00:11:15,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:11:15,635 INFO L435 NwaCegarLoop]: 796 mSDtfsCounter, 0 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:15,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1223 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-10 00:11:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2025-01-10 00:11:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 879. [2025-01-10 00:11:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 518 states have (on average 1.942084942084942) internal successors, (1006), 874 states have internal predecessors, (1006), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:15,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1012 transitions. [2025-01-10 00:11:15,672 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1012 transitions. Word has length 10 [2025-01-10 00:11:15,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:15,672 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1012 transitions. [2025-01-10 00:11:15,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:15,672 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1012 transitions. [2025-01-10 00:11:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-10 00:11:15,673 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:15,673 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:15,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 00:11:15,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:15,874 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:15,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:15,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1756085438, now seen corresponding path program 1 times [2025-01-10 00:11:15,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:15,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35317152] [2025-01-10 00:11:15,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:15,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:15,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:15,879 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:15,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 00:11:15,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:11:15,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:11:15,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:15,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:15,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:11:15,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:15,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:11:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:16,027 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:16,027 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:16,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35317152] [2025-01-10 00:11:16,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35317152] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:16,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:16,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:11:16,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499056685] [2025-01-10 00:11:16,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:16,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:11:16,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:16,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:11:16,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:11:16,029 INFO L87 Difference]: Start difference. First operand 879 states and 1012 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:17,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:17,627 INFO L93 Difference]: Finished difference Result 864 states and 974 transitions. [2025-01-10 00:11:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:11:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-01-10 00:11:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:17,631 INFO L225 Difference]: With dead ends: 864 [2025-01-10 00:11:17,631 INFO L226 Difference]: Without dead ends: 864 [2025-01-10 00:11:17,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:11:17,632 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 559 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:17,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 890 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-10 00:11:17,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2025-01-10 00:11:17,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 856. [2025-01-10 00:11:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 518 states have (on average 1.8532818532818534) internal successors, (960), 851 states have internal predecessors, (960), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 966 transitions. [2025-01-10 00:11:17,650 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 966 transitions. Word has length 15 [2025-01-10 00:11:17,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:17,651 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 966 transitions. [2025-01-10 00:11:17,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 966 transitions. [2025-01-10 00:11:17,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-10 00:11:17,652 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:17,652 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:17,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 00:11:17,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:17,856 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:17,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1756085437, now seen corresponding path program 1 times [2025-01-10 00:11:17,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:17,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176752427] [2025-01-10 00:11:17,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:17,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:17,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:17,860 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:17,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 00:11:17,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:11:17,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:11:17,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:17,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:17,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:11:17,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:17,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:11:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:18,089 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:18,089 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:18,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176752427] [2025-01-10 00:11:18,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176752427] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:18,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:18,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:11:18,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293726006] [2025-01-10 00:11:18,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:18,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:11:18,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:18,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:11:18,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:11:18,091 INFO L87 Difference]: Start difference. First operand 856 states and 966 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:20,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:20,021 INFO L93 Difference]: Finished difference Result 1033 states and 1134 transitions. [2025-01-10 00:11:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:11:20,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-01-10 00:11:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:20,026 INFO L225 Difference]: With dead ends: 1033 [2025-01-10 00:11:20,026 INFO L226 Difference]: Without dead ends: 1033 [2025-01-10 00:11:20,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:11:20,026 INFO L435 NwaCegarLoop]: 739 mSDtfsCounter, 384 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:20,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1433 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-01-10 00:11:20,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2025-01-10 00:11:20,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 970. [2025-01-10 00:11:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 632 states have (on average 1.7373417721518987) internal successors, (1098), 965 states have internal predecessors, (1098), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1104 transitions. [2025-01-10 00:11:20,044 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1104 transitions. Word has length 15 [2025-01-10 00:11:20,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:20,044 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1104 transitions. [2025-01-10 00:11:20,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:20,044 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1104 transitions. [2025-01-10 00:11:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-10 00:11:20,045 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:20,045 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:20,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 00:11:20,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:20,249 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:20,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:20,250 INFO L85 PathProgramCache]: Analyzing trace with hash 243083192, now seen corresponding path program 1 times [2025-01-10 00:11:20,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:20,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284452136] [2025-01-10 00:11:20,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:20,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:20,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:20,254 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:20,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 00:11:20,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 00:11:20,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 00:11:20,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:20,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:20,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:11:20,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:20,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:11:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:20,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:11:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:21,057 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:21,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284452136] [2025-01-10 00:11:21,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284452136] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:11:21,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:11:21,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-01-10 00:11:21,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925620738] [2025-01-10 00:11:21,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:11:21,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:11:21,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:21,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:11:21,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:11:21,059 INFO L87 Difference]: Start difference. First operand 970 states and 1104 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:26,025 INFO L93 Difference]: Finished difference Result 1389 states and 1624 transitions. [2025-01-10 00:11:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:11:26,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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 34 [2025-01-10 00:11:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:26,032 INFO L225 Difference]: With dead ends: 1389 [2025-01-10 00:11:26,032 INFO L226 Difference]: Without dead ends: 1389 [2025-01-10 00:11:26,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-01-10 00:11:26,034 INFO L435 NwaCegarLoop]: 766 mSDtfsCounter, 1016 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:26,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 2236 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2025-01-10 00:11:26,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2025-01-10 00:11:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1134. [2025-01-10 00:11:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 796 states have (on average 1.670854271356784) internal successors, (1330), 1129 states have internal predecessors, (1330), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1336 transitions. [2025-01-10 00:11:26,061 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1336 transitions. Word has length 34 [2025-01-10 00:11:26,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:26,061 INFO L471 AbstractCegarLoop]: Abstraction has 1134 states and 1336 transitions. [2025-01-10 00:11:26,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1336 transitions. [2025-01-10 00:11:26,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-10 00:11:26,065 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:26,065 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] [2025-01-10 00:11:26,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-10 00:11:26,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:26,266 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:26,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:26,267 INFO L85 PathProgramCache]: Analyzing trace with hash 335697987, now seen corresponding path program 1 times [2025-01-10 00:11:26,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:26,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374071673] [2025-01-10 00:11:26,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:26,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:26,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:26,269 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:26,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 00:11:26,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-10 00:11:26,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-10 00:11:26,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:26,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:26,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:11:26,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:26,491 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:26,492 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:26,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374071673] [2025-01-10 00:11:26,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374071673] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:26,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:26,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:11:26,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641249726] [2025-01-10 00:11:26,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:26,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:11:26,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:26,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:11:26,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:11:26,496 INFO L87 Difference]: Start difference. First operand 1134 states and 1336 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:26,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:26,576 INFO L93 Difference]: Finished difference Result 823 states and 900 transitions. [2025-01-10 00:11:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:11:26,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2025-01-10 00:11:26,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:26,579 INFO L225 Difference]: With dead ends: 823 [2025-01-10 00:11:26,579 INFO L226 Difference]: Without dead ends: 823 [2025-01-10 00:11:26,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:11:26,580 INFO L435 NwaCegarLoop]: 713 mSDtfsCounter, 56 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:26,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2066 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 00:11:26,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2025-01-10 00:11:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 821. [2025-01-10 00:11:26,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 506 states have (on average 1.7628458498023716) internal successors, (892), 816 states have internal predecessors, (892), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 898 transitions. [2025-01-10 00:11:26,615 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 898 transitions. Word has length 49 [2025-01-10 00:11:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:26,617 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 898 transitions. [2025-01-10 00:11:26,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:26,617 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 898 transitions. [2025-01-10 00:11:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-01-10 00:11:26,618 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:26,618 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] [2025-01-10 00:11:26,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 00:11:26,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:26,824 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:26,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:26,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1208191113, now seen corresponding path program 1 times [2025-01-10 00:11:26,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:26,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720521136] [2025-01-10 00:11:26,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:26,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:26,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:26,828 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:26,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 00:11:26,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-01-10 00:11:27,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-01-10 00:11:27,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:27,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:27,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:11:27,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:27,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:11:27,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:11:27,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-10 00:11:27,480 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:11:27,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-10 00:11:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:27,492 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:27,492 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:27,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720521136] [2025-01-10 00:11:27,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720521136] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:27,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:27,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:11:27,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213491982] [2025-01-10 00:11:27,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:27,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:11:27,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:27,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:11:27,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:11:27,494 INFO L87 Difference]: Start difference. First operand 821 states and 898 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:28,624 INFO L93 Difference]: Finished difference Result 783 states and 860 transitions. [2025-01-10 00:11:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:11:28,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2025-01-10 00:11:28,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:28,627 INFO L225 Difference]: With dead ends: 783 [2025-01-10 00:11:28,627 INFO L226 Difference]: Without dead ends: 783 [2025-01-10 00:11:28,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:11:28,628 INFO L435 NwaCegarLoop]: 381 mSDtfsCounter, 845 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:28,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 597 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-10 00:11:28,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2025-01-10 00:11:28,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 746. [2025-01-10 00:11:28,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 469 states have (on average 1.6631130063965884) internal successors, (780), 741 states have internal predecessors, (780), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:28,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 786 transitions. [2025-01-10 00:11:28,639 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 786 transitions. Word has length 57 [2025-01-10 00:11:28,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:28,639 INFO L471 AbstractCegarLoop]: Abstraction has 746 states and 786 transitions. [2025-01-10 00:11:28,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:28,640 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 786 transitions. [2025-01-10 00:11:28,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-01-10 00:11:28,640 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:28,640 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:28,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-10 00:11:28,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:28,845 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:28,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:28,846 INFO L85 PathProgramCache]: Analyzing trace with hash -829946597, now seen corresponding path program 1 times [2025-01-10 00:11:28,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:28,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137021624] [2025-01-10 00:11:28,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:28,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:28,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:28,849 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:28,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 00:11:28,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-01-10 00:11:29,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-01-10 00:11:29,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:29,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:29,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 00:11:29,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:29,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:11:29,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-10 00:11:29,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-01-10 00:11:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:29,101 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:29,101 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:29,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137021624] [2025-01-10 00:11:29,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137021624] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:29,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:29,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:11:29,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353101579] [2025-01-10 00:11:29,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:29,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:11:29,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:29,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:11:29,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:11:29,102 INFO L87 Difference]: Start difference. First operand 746 states and 786 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:30,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:30,342 INFO L93 Difference]: Finished difference Result 745 states and 785 transitions. [2025-01-10 00:11:30,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:11:30,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-01-10 00:11:30,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:30,345 INFO L225 Difference]: With dead ends: 745 [2025-01-10 00:11:30,345 INFO L226 Difference]: Without dead ends: 745 [2025-01-10 00:11:30,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:11:30,346 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 2 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:30,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1719 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-10 00:11:30,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2025-01-10 00:11:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2025-01-10 00:11:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 469 states have (on average 1.6609808102345416) internal successors, (779), 740 states have internal predecessors, (779), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 785 transitions. [2025-01-10 00:11:30,359 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 785 transitions. Word has length 62 [2025-01-10 00:11:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:30,360 INFO L471 AbstractCegarLoop]: Abstraction has 745 states and 785 transitions. [2025-01-10 00:11:30,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:30,360 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 785 transitions. [2025-01-10 00:11:30,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-01-10 00:11:30,362 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:30,362 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:30,374 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 [2025-01-10 00:11:30,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:30,563 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:30,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:30,563 INFO L85 PathProgramCache]: Analyzing trace with hash -829946596, now seen corresponding path program 1 times [2025-01-10 00:11:30,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:30,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791140840] [2025-01-10 00:11:30,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:30,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:30,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:30,565 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:30,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 00:11:30,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-01-10 00:11:30,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-01-10 00:11:30,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:30,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:30,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 00:11:30,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:30,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:11:30,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-01-10 00:11:30,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-10 00:11:30,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-01-10 00:11:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:30,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:30,853 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:30,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791140840] [2025-01-10 00:11:30,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791140840] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:30,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:30,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:11:30,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453885827] [2025-01-10 00:11:30,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:30,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:11:30,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:30,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:11:30,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:11:30,855 INFO L87 Difference]: Start difference. First operand 745 states and 785 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:32,347 INFO L93 Difference]: Finished difference Result 744 states and 784 transitions. [2025-01-10 00:11:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:11:32,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-01-10 00:11:32,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:32,350 INFO L225 Difference]: With dead ends: 744 [2025-01-10 00:11:32,350 INFO L226 Difference]: Without dead ends: 744 [2025-01-10 00:11:32,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:11:32,351 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 1 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:32,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1744 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-10 00:11:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2025-01-10 00:11:32,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2025-01-10 00:11:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 468 states have (on average 1.6623931623931625) internal successors, (778), 739 states have internal predecessors, (778), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 00:11:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 784 transitions. [2025-01-10 00:11:32,365 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 784 transitions. Word has length 62 [2025-01-10 00:11:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:32,366 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 784 transitions. [2025-01-10 00:11:32,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:11:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 784 transitions. [2025-01-10 00:11:32,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-10 00:11:32,368 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:32,368 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:32,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 00:11:32,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:32,569 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:32,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:32,569 INFO L85 PathProgramCache]: Analyzing trace with hash -863002622, now seen corresponding path program 1 times [2025-01-10 00:11:32,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:32,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208034454] [2025-01-10 00:11:32,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:32,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:32,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:32,572 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:32,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 00:11:32,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-10 00:11:32,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-10 00:11:32,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:32,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:32,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 00:11:32,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:32,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-10 00:11:32,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-01-10 00:11:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:32,873 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:32,873 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:32,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208034454] [2025-01-10 00:11:32,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208034454] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:32,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:32,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:11:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360221216] [2025-01-10 00:11:32,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:32,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:11:32,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:32,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:11:32,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:11:32,875 INFO L87 Difference]: Start difference. First operand 744 states and 784 transitions. Second operand has 7 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:11:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:34,260 INFO L93 Difference]: Finished difference Result 756 states and 799 transitions. [2025-01-10 00:11:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:11:34,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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 70 [2025-01-10 00:11:34,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:34,265 INFO L225 Difference]: With dead ends: 756 [2025-01-10 00:11:34,265 INFO L226 Difference]: Without dead ends: 756 [2025-01-10 00:11:34,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-10 00:11:34,266 INFO L435 NwaCegarLoop]: 677 mSDtfsCounter, 6 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:34,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2408 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-10 00:11:34,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2025-01-10 00:11:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 750. [2025-01-10 00:11:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 473 states have (on average 1.6596194503171247) internal successors, (785), 744 states have internal predecessors, (785), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-10 00:11:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 794 transitions. [2025-01-10 00:11:34,281 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 794 transitions. Word has length 70 [2025-01-10 00:11:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:34,282 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 794 transitions. [2025-01-10 00:11:34,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:11:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 794 transitions. [2025-01-10 00:11:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-10 00:11:34,282 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:34,283 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:34,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 00:11:34,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:34,483 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:34,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:34,484 INFO L85 PathProgramCache]: Analyzing trace with hash -863002621, now seen corresponding path program 1 times [2025-01-10 00:11:34,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:34,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525527526] [2025-01-10 00:11:34,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:34,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:34,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:34,486 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:34,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 00:11:34,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-10 00:11:34,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-10 00:11:34,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:34,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:34,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:11:34,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:34,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:11:34,689 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:34,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525527526] [2025-01-10 00:11:34,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525527526] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:11:34,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:11:34,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:11:34,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097068969] [2025-01-10 00:11:34,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:11:34,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:11:34,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:34,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:11:34,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:11:34,690 INFO L87 Difference]: Start difference. First operand 750 states and 794 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:11:34,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:34,724 INFO L93 Difference]: Finished difference Result 747 states and 788 transitions. [2025-01-10 00:11:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:11:34,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 70 [2025-01-10 00:11:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:34,729 INFO L225 Difference]: With dead ends: 747 [2025-01-10 00:11:34,729 INFO L226 Difference]: Without dead ends: 747 [2025-01-10 00:11:34,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:11:34,731 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 0 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:34,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2050 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:11:34,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2025-01-10 00:11:34,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2025-01-10 00:11:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 470 states have (on average 1.6617021276595745) internal successors, (781), 742 states have internal predecessors, (781), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 00:11:34,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 788 transitions. [2025-01-10 00:11:34,744 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 788 transitions. Word has length 70 [2025-01-10 00:11:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:34,745 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 788 transitions. [2025-01-10 00:11:34,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:11:34,745 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 788 transitions. [2025-01-10 00:11:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-10 00:11:34,746 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:34,746 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:34,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 00:11:34,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:34,947 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:34,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:34,948 INFO L85 PathProgramCache]: Analyzing trace with hash 398933575, now seen corresponding path program 1 times [2025-01-10 00:11:34,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:34,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203304507] [2025-01-10 00:11:34,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:34,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:34,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:34,951 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:34,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-10 00:11:35,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-10 00:11:35,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-10 00:11:35,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:35,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:35,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:11:35,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:35,222 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:11:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:35,282 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:35,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203304507] [2025-01-10 00:11:35,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203304507] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:11:35,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:11:35,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-01-10 00:11:35,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783731875] [2025-01-10 00:11:35,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:11:35,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:11:35,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:35,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:11:35,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:11:35,284 INFO L87 Difference]: Start difference. First operand 747 states and 788 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:11:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:35,403 INFO L93 Difference]: Finished difference Result 759 states and 805 transitions. [2025-01-10 00:11:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 00:11:35,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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 71 [2025-01-10 00:11:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:35,408 INFO L225 Difference]: With dead ends: 759 [2025-01-10 00:11:35,408 INFO L226 Difference]: Without dead ends: 759 [2025-01-10 00:11:35,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-01-10 00:11:35,410 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 6 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3412 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:35,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3412 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 00:11:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2025-01-10 00:11:35,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 757. [2025-01-10 00:11:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 479 states have (on average 1.6617954070981211) internal successors, (796), 751 states have internal predecessors, (796), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 00:11:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 803 transitions. [2025-01-10 00:11:35,423 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 803 transitions. Word has length 71 [2025-01-10 00:11:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:35,423 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 803 transitions. [2025-01-10 00:11:35,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:11:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 803 transitions. [2025-01-10 00:11:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-10 00:11:35,424 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:35,424 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:35,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-10 00:11:35,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:35,625 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:35,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1398306494, now seen corresponding path program 2 times [2025-01-10 00:11:35,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:35,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668965063] [2025-01-10 00:11:35,628 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:11:35,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:35,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:35,630 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:35,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-10 00:11:35,788 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 74 statements into 2 equivalence classes. [2025-01-10 00:11:51,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 74 of 74 statements. [2025-01-10 00:11:51,829 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:11:51,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:51,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-10 00:11:51,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:51,914 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:11:51,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-10 00:11:51,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-10 00:11:52,070 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:11:52,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-01-10 00:11:52,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-01-10 00:11:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 00:11:52,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:11:52,187 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-01-10 00:11:52,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-01-10 00:11:52,194 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_852 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_852) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2025-01-10 00:11:52,197 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:11:52,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668965063] [2025-01-10 00:11:52,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668965063] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:11:52,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1215931365] [2025-01-10 00:11:52,197 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:11:52,197 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-10 00:11:52,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-10 00:11:52,200 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) [2025-01-10 00:11:52,202 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 [2025-01-10 00:11:52,403 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 74 statements into 2 equivalence classes. [2025-01-10 00:11:52,822 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 74 of 74 statements. [2025-01-10 00:11:52,822 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:11:52,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:52,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 00:11:52,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:53,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:11:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:53,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1215931365] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:11:53,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:11:53,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-01-10 00:11:53,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216489560] [2025-01-10 00:11:53,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:11:53,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 00:11:53,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:11:53,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 00:11:53,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-01-10 00:11:53,245 INFO L87 Difference]: Start difference. First operand 757 states and 803 transitions. Second operand has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 00:11:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:11:58,932 INFO L93 Difference]: Finished difference Result 773 states and 826 transitions. [2025-01-10 00:11:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-10 00:11:58,932 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 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 74 [2025-01-10 00:11:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:11:58,934 INFO L225 Difference]: With dead ends: 773 [2025-01-10 00:11:58,935 INFO L226 Difference]: Without dead ends: 769 [2025-01-10 00:11:58,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2025-01-10 00:11:58,936 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 463 mSDsluCounter, 7205 mSDsCounter, 0 mSdLazyCounter, 5169 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 7660 SdHoareTripleChecker+Invalid, 5187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 5169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:11:58,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 7660 Invalid, 5187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 5169 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2025-01-10 00:11:58,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2025-01-10 00:11:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 765. [2025-01-10 00:11:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 488 states have (on average 1.653688524590164) internal successors, (807), 759 states have internal predecessors, (807), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 00:11:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 814 transitions. [2025-01-10 00:11:58,948 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 814 transitions. Word has length 74 [2025-01-10 00:11:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:11:58,948 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 814 transitions. [2025-01-10 00:11:58,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 00:11:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 814 transitions. [2025-01-10 00:11:58,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-01-10 00:11:58,949 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:11:58,950 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:11:58,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2025-01-10 00:11:59,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-10 00:11:59,350 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 [2025-01-10 00:11:59,350 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:11:59,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:11:59,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1704590115, now seen corresponding path program 1 times [2025-01-10 00:11:59,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:11:59,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356491760] [2025-01-10 00:11:59,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:11:59,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:11:59,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:11:59,354 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:11:59,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-10 00:11:59,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-01-10 00:11:59,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-01-10 00:11:59,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:11:59,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:11:59,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 00:11:59,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:11:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:11:59,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:12:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:12:00,198 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:12:00,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356491760] [2025-01-10 00:12:00,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356491760] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:12:00,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:12:00,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-01-10 00:12:00,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073343813] [2025-01-10 00:12:00,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:12:00,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 00:12:00,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:12:00,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 00:12:00,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-01-10 00:12:00,200 INFO L87 Difference]: Start difference. First operand 765 states and 814 transitions. Second operand has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:12:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:12:01,417 INFO L93 Difference]: Finished difference Result 789 states and 853 transitions. [2025-01-10 00:12:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-10 00:12:01,418 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 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 80 [2025-01-10 00:12:01,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:12:01,421 INFO L225 Difference]: With dead ends: 789 [2025-01-10 00:12:01,421 INFO L226 Difference]: Without dead ends: 783 [2025-01-10 00:12:01,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-01-10 00:12:01,422 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 15 mSDsluCounter, 8182 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8867 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:12:01,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 8867 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 00:12:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2025-01-10 00:12:01,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2025-01-10 00:12:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 506 states have (on average 1.640316205533597) internal successors, (830), 777 states have internal predecessors, (830), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 00:12:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 837 transitions. [2025-01-10 00:12:01,432 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 837 transitions. Word has length 80 [2025-01-10 00:12:01,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:12:01,433 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 837 transitions. [2025-01-10 00:12:01,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:12:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 837 transitions. [2025-01-10 00:12:01,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-01-10 00:12:01,433 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:12:01,433 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:12:01,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-10 00:12:01,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:12:01,638 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:12:01,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:12:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1897801443, now seen corresponding path program 2 times [2025-01-10 00:12:01,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:12:01,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243456548] [2025-01-10 00:12:01,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:12:01,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:12:01,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:12:01,641 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:12:01,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-10 00:12:01,799 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 92 statements into 2 equivalence classes. [2025-01-10 00:12:10,735 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 92 of 92 statements. [2025-01-10 00:12:10,735 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:12:10,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:12:10,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-01-10 00:12:10,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:12:10,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:12:10,852 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:12:10,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-10 00:12:10,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-01-10 00:12:10,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-10 00:12:10,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-01-10 00:12:10,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-01-10 00:12:11,305 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:12:11,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-01-10 00:12:11,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-01-10 00:12:11,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-01-10 00:12:11,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-01-10 00:12:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-01-10 00:12:11,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:12:11,717 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1428 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1428) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1427) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1428 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1428) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2025-01-10 00:12:11,722 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:12:11,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243456548] [2025-01-10 00:12:11,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243456548] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:12:11,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1970057180] [2025-01-10 00:12:11,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:12:11,722 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-10 00:12:11,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-10 00:12:11,724 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-10 00:12:11,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2025-01-10 00:12:11,964 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 92 statements into 2 equivalence classes. [2025-01-10 00:12:12,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 92 of 92 statements. [2025-01-10 00:12:12,437 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:12:12,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:12:12,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-10 00:12:12,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:12:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:12:13,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:12:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:12:14,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1970057180] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:12:14,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:12:14,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-01-10 00:12:14,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920023356] [2025-01-10 00:12:14,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:12:14,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-01-10 00:12:14,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:12:14,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-01-10 00:12:14,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2025-01-10 00:12:14,498 INFO L87 Difference]: Start difference. First operand 783 states and 837 transitions. Second operand has 58 states, 57 states have (on average 3.0350877192982457) internal successors, (173), 58 states have internal predecessors, (173), 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)