./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_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_FNV_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 00:14:28,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:14:28,367 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:14:28,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:14:28,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:14:28,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:14:28,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:14:28,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:14:28,393 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:14:28,394 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:14:28,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:14:28,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:14:28,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:14:28,394 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:14:28,394 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:14:28,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:14:28,395 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:14:28,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:14:28,395 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:14:28,396 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:14:28,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:14:28,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:14:28,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:14:28,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:14:28,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:14:28,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:14:28,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:14:28,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:14:28,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:14:28,396 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 00:14:28,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:14:28,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:14:28,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:14:28,634 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:14:28,634 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:14:28,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2025-01-10 00:14:29,757 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f49f4e66f/d546a5db0d934456b5b91e0c31f46a07/FLAG34ea04954 [2025-01-10 00:14:30,108 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:14:30,109 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2025-01-10 00:14:30,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f49f4e66f/d546a5db0d934456b5b91e0c31f46a07/FLAG34ea04954 [2025-01-10 00:14:30,329 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f49f4e66f/d546a5db0d934456b5b91e0c31f46a07 [2025-01-10 00:14:30,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:14:30,332 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:14:30,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:14:30,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:14:30,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:14:30,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:14:30" (1/1) ... [2025-01-10 00:14:30,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc7c8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:30, skipping insertion in model container [2025-01-10 00:14:30,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:14:30" (1/1) ... [2025-01-10 00:14:30,369 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:14:30,614 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 00:14:30,648 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 00:14:30,651 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 00:14:30,653 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 00:14:30,661 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 00:14:30,670 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 00:14:30,671 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 00:14:30,672 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 00:14:30,673 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 00:14:30,674 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 00:14:30,675 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 00:14:30,677 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:30,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:14:30,691 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 00:14:30,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b7a47d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:30, skipping insertion in model container [2025-01-10 00:14:30,692 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:14:30,692 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-10 00:14:30,694 INFO L158 Benchmark]: Toolchain (without parser) took 360.90ms. Allocated memory is still 142.6MB. Free memory was 102.9MB in the beginning and 86.3MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:14:30,694 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:14:30,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.93ms. Allocated memory is still 142.6MB. Free memory was 102.9MB in the beginning and 86.3MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:14:30,695 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.93ms. Allocated memory is still 142.6MB. Free memory was 102.9MB in the beginning and 86.3MB in the end (delta: 16.6MB). 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_FNV_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 00:14:32,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:14:32,587 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 00:14:32,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:14:32,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:14:32,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:14:32,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:14:32,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:14:32,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:14:32,613 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:14:32,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:14:32,613 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:14:32,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:14:32,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:14:32,614 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:14:32,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:14:32,614 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:14:32,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:14:32,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:14:32,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:14:32,614 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:14:32,614 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:14:32,614 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:14:32,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:14:32,615 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:14:32,615 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 00:14:32,615 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 00:14:32,615 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:14:32,615 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:14:32,615 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:14:32,615 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:14:32,615 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:14:32,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:14:32,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:14:32,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:14:32,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:14:32,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:14:32,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:14:32,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:14:32,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:14:32,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:14:32,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:14:32,616 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:14:32,616 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 00:14:32,616 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 00:14:32,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:14:32,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:14:32,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:14:32,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:14:32,617 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 00:14:32,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:14:32,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:14:32,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:14:32,851 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:14:32,853 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:14:32,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2025-01-10 00:14:33,337 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bc62eaa6e/9a511f5228884aafbe785b9f695429b1/FLAG695f44c9a [2025-01-10 00:14:34,940 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:14:34,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2025-01-10 00:14:34,962 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bc62eaa6e/9a511f5228884aafbe785b9f695429b1/FLAG695f44c9a [2025-01-10 00:14:34,981 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bc62eaa6e/9a511f5228884aafbe785b9f695429b1 [2025-01-10 00:14:34,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:14:34,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:14:34,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:14:34,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:14:34,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:14:34,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:14:34" (1/1) ... [2025-01-10 00:14:34,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d341f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:34, skipping insertion in model container [2025-01-10 00:14:34,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:14:34" (1/1) ... [2025-01-10 00:14:35,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:14:35,367 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 00:14:35,411 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 00:14:35,418 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 00:14:35,422 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 00:14:35,430 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 00:14:35,440 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 00:14:35,441 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 00:14:35,443 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 00:14:35,444 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:35,445 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 00:14:35,446 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:35,449 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 00:14:35,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:14:35,468 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-10 00:14:35,475 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:14:35,500 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:35,516 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:35,518 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:35,522 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:35,527 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:35,536 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:35,540 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 00:14:35,543 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 00:14:35,547 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:35,548 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:35,548 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:14:35,551 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 00:14:35,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:14:35,558 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:14:35,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:14:35,676 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:14:35,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35 WrapperNode [2025-01-10 00:14:35,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:14:35,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:14:35,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:14:35,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:14:35,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,701 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,746 INFO L138 Inliner]: procedures = 179, calls = 221, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 729 [2025-01-10 00:14:35,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:14:35,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:14:35,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:14:35,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:14:35,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,769 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,834 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 00:14:35,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,869 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:14:35,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:14:35,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:14:35,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:14:35,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (1/1) ... [2025-01-10 00:14:35,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:14:35,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:35,927 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 00:14:35,930 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 00:14:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-01-10 00:14:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-01-10 00:14:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-10 00:14:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-01-10 00:14:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-01-10 00:14:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-01-10 00:14:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-01-10 00:14:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-01-10 00:14:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 00:14:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:14:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-10 00:14:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-10 00:14:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-10 00:14:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-10 00:14:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:14:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-10 00:14:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-01-10 00:14:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 00:14:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-10 00:14:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:14:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:14:36,113 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:14:36,115 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:14:36,117 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:14:36,157 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:14:38,449 INFO L? ?]: Removed 893 outVars from TransFormulas that were not future-live. [2025-01-10 00:14:38,449 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:14:38,468 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:14:38,468 INFO L312 CfgBuilder]: Removed 18 assume(true) statements. [2025-01-10 00:14:38,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:14:38 BoogieIcfgContainer [2025-01-10 00:14:38,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:14:38,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:14:38,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:14:38,474 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:14:38,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:14:34" (1/3) ... [2025-01-10 00:14:38,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66642e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:14:38, skipping insertion in model container [2025-01-10 00:14:38,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:35" (2/3) ... [2025-01-10 00:14:38,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66642e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:14:38, skipping insertion in model container [2025-01-10 00:14:38,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:14:38" (3/3) ... [2025-01-10 00:14:38,475 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test1-2.i [2025-01-10 00:14:38,484 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:14:38,486 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_nondet_test1-2.i that has 3 procedures, 836 locations, 1 initial locations, 25 loop locations, and 425 error locations. [2025-01-10 00:14:38,520 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:14:38,536 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;@2427255e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:14:38,536 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2025-01-10 00:14:38,540 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 00:14:38,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:14:38,548 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:38,548 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:14:38,549 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 00:14:38,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:38,554 INFO L85 PathProgramCache]: Analyzing trace with hash 45872282, now seen corresponding path program 1 times [2025-01-10 00:14:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:38,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653219253] [2025-01-10 00:14:38,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:38,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:38,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:38,562 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 00:14:38,563 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 00:14:38,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:14:38,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:14:38,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:38,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:38,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-10 00:14:38,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:38,678 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 00:14:38,678 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:38,679 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653219253] [2025-01-10 00:14:38,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653219253] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:38,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:38,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:14:38,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094224967] [2025-01-10 00:14:38,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:38,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:14:38,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:38,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:14:38,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:14:38,701 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 00:14:38,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:38,752 INFO L93 Difference]: Finished difference Result 821 states and 859 transitions. [2025-01-10 00:14:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:14:38,754 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 00:14:38,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:38,766 INFO L225 Difference]: With dead ends: 821 [2025-01-10 00:14:38,767 INFO L226 Difference]: Without dead ends: 819 [2025-01-10 00:14:38,768 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 00:14:38,771 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 00:14:38,771 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 00:14:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2025-01-10 00:14:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2025-01-10 00:14:38,825 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 00:14:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 857 transitions. [2025-01-10 00:14:38,833 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 857 transitions. Word has length 5 [2025-01-10 00:14:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:38,833 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 857 transitions. [2025-01-10 00:14:38,833 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 00:14:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 857 transitions. [2025-01-10 00:14:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:14:38,833 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:38,834 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:14:38,839 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 00:14:39,034 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 00:14:39,034 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 00:14:39,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:39,035 INFO L85 PathProgramCache]: Analyzing trace with hash 45872344, now seen corresponding path program 1 times [2025-01-10 00:14:39,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:39,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406075284] [2025-01-10 00:14:39,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:39,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:39,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:39,037 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 00:14:39,038 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 00:14:39,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:14:39,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:14:39,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:39,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:39,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:14:39,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:39,149 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 00:14:39,162 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 00:14:39,162 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:39,162 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406075284] [2025-01-10 00:14:39,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406075284] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:39,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:39,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:14:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508587455] [2025-01-10 00:14:39,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:39,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:14:39,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:39,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:14:39,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:14:39,163 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 00:14:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:40,157 INFO L93 Difference]: Finished difference Result 771 states and 810 transitions. [2025-01-10 00:14:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:14:40,158 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 00:14:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:40,160 INFO L225 Difference]: With dead ends: 771 [2025-01-10 00:14:40,160 INFO L226 Difference]: Without dead ends: 771 [2025-01-10 00:14:40,160 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 00:14:40,160 INFO L435 NwaCegarLoop]: 498 mSDtfsCounter, 513 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:14:40,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 609 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-10 00:14:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2025-01-10 00:14:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 770. [2025-01-10 00:14:40,171 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 00:14:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 808 transitions. [2025-01-10 00:14:40,173 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 808 transitions. Word has length 5 [2025-01-10 00:14:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:40,173 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 808 transitions. [2025-01-10 00:14:40,173 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 00:14:40,174 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 808 transitions. [2025-01-10 00:14:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:14:40,174 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:40,174 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:14:40,181 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 00:14:40,374 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 00:14:40,375 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 00:14:40,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:40,375 INFO L85 PathProgramCache]: Analyzing trace with hash 45872345, now seen corresponding path program 1 times [2025-01-10 00:14:40,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:40,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738882988] [2025-01-10 00:14:40,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:40,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:40,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:40,377 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 00:14:40,378 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 00:14:40,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:14:40,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:14:40,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:40,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:40,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:14:40,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:40,467 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 00:14:40,482 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 00:14:40,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:40,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:40,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738882988] [2025-01-10 00:14:40,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738882988] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:40,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:40,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:14:40,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264640060] [2025-01-10 00:14:40,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:40,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:14:40,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:40,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:14:40,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:14:40,483 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 00:14:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:41,487 INFO L93 Difference]: Finished difference Result 843 states and 885 transitions. [2025-01-10 00:14:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:14:41,488 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 00:14:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:41,490 INFO L225 Difference]: With dead ends: 843 [2025-01-10 00:14:41,490 INFO L226 Difference]: Without dead ends: 843 [2025-01-10 00:14:41,490 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 00:14:41,491 INFO L435 NwaCegarLoop]: 677 mSDtfsCounter, 265 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:14:41,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 954 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-10 00:14:41,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2025-01-10 00:14:41,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 796. [2025-01-10 00:14:41,503 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 00:14:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 871 transitions. [2025-01-10 00:14:41,505 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 871 transitions. Word has length 5 [2025-01-10 00:14:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:41,505 INFO L471 AbstractCegarLoop]: Abstraction has 796 states and 871 transitions. [2025-01-10 00:14:41,506 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 00:14:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 871 transitions. [2025-01-10 00:14:41,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:14:41,506 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:41,506 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:14:41,512 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 00:14:41,706 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 00:14:41,707 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 00:14:41,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:41,707 INFO L85 PathProgramCache]: Analyzing trace with hash 46750123, now seen corresponding path program 1 times [2025-01-10 00:14:41,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:41,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252603066] [2025-01-10 00:14:41,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:41,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:41,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:41,710 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 00:14:41,711 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 00:14:41,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:14:41,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:14:41,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:41,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:41,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:14:41,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:41,804 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 00:14:41,805 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:41,805 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:41,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252603066] [2025-01-10 00:14:41,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252603066] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:41,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:41,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:14:41,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471332440] [2025-01-10 00:14:41,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:41,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:14:41,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:41,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:14:41,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:14:41,806 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 00:14:42,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:42,309 INFO L93 Difference]: Finished difference Result 1103 states and 1220 transitions. [2025-01-10 00:14:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:14:42,311 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 00:14:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:42,314 INFO L225 Difference]: With dead ends: 1103 [2025-01-10 00:14:42,315 INFO L226 Difference]: Without dead ends: 1103 [2025-01-10 00:14:42,315 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 00:14:42,316 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 328 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:14:42,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 2343 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 00:14:42,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2025-01-10 00:14:42,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 885. [2025-01-10 00:14:42,340 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 00:14:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1020 transitions. [2025-01-10 00:14:42,344 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1020 transitions. Word has length 5 [2025-01-10 00:14:42,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:42,345 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1020 transitions. [2025-01-10 00:14:42,345 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 00:14:42,345 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1020 transitions. [2025-01-10 00:14:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-10 00:14:42,346 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:42,346 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:14:42,355 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 00:14:42,546 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 00:14:42,547 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 00:14:42,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1977533485, now seen corresponding path program 1 times [2025-01-10 00:14:42,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:42,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85748995] [2025-01-10 00:14:42,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:42,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:42,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:42,550 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 00:14:42,551 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 00:14:42,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 00:14:42,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 00:14:42,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:42,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:42,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:14:42,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:42,631 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 00:14:42,631 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:42,631 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:42,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85748995] [2025-01-10 00:14:42,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85748995] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:42,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:42,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:14:42,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144256126] [2025-01-10 00:14:42,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:42,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:14:42,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:42,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:14:42,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:14:42,632 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 00:14:42,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:42,660 INFO L93 Difference]: Finished difference Result 885 states and 1019 transitions. [2025-01-10 00:14:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:14:42,661 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 00:14:42,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:42,663 INFO L225 Difference]: With dead ends: 885 [2025-01-10 00:14:42,663 INFO L226 Difference]: Without dead ends: 885 [2025-01-10 00:14:42,663 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 00:14:42,664 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 00:14:42,664 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 00:14:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2025-01-10 00:14:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2025-01-10 00:14:42,693 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 00:14:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1019 transitions. [2025-01-10 00:14:42,696 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1019 transitions. Word has length 7 [2025-01-10 00:14:42,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:42,696 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1019 transitions. [2025-01-10 00:14:42,697 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 00:14:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1019 transitions. [2025-01-10 00:14:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-10 00:14:42,697 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:42,697 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:14:42,704 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 00:14:42,897 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 00:14:42,898 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 00:14:42,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:42,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1042610665, now seen corresponding path program 1 times [2025-01-10 00:14:42,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:42,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694433773] [2025-01-10 00:14:42,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:42,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:42,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:42,903 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 00:14:42,905 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 00:14:42,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 00:14:42,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 00:14:42,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:42,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:42,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 00:14:42,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:42,988 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 00:14:42,988 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:42,988 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:42,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694433773] [2025-01-10 00:14:42,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694433773] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:42,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:42,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:14:42,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739398686] [2025-01-10 00:14:42,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:42,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:14:42,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:42,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:14:42,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:14:42,989 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 00:14:43,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:43,756 INFO L93 Difference]: Finished difference Result 886 states and 1019 transitions. [2025-01-10 00:14:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:14:43,756 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 00:14:43,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:43,758 INFO L225 Difference]: With dead ends: 886 [2025-01-10 00:14:43,758 INFO L226 Difference]: Without dead ends: 879 [2025-01-10 00:14:43,758 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 00:14:43,759 INFO L435 NwaCegarLoop]: 796 mSDtfsCounter, 0 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2025-01-10 00:14:43,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1223 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-10 00:14:43,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2025-01-10 00:14:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 879. [2025-01-10 00:14:43,772 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 00:14:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1012 transitions. [2025-01-10 00:14:43,775 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1012 transitions. Word has length 10 [2025-01-10 00:14:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:43,775 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1012 transitions. [2025-01-10 00:14:43,775 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 00:14:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1012 transitions. [2025-01-10 00:14:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-10 00:14:43,777 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:43,778 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:14:43,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 00:14:43,982 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 00:14:43,982 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 00:14:43,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1756085438, now seen corresponding path program 1 times [2025-01-10 00:14:43,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:43,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288043007] [2025-01-10 00:14:43,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:43,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:43,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:43,987 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 00:14:43,988 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 00:14:44,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:14:44,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:14:44,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:44,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:44,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:14:44,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:44,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:14:44,113 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 00:14:44,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:44,115 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:44,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288043007] [2025-01-10 00:14:44,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288043007] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:44,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:44,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:14:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001684743] [2025-01-10 00:14:44,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:44,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:14:44,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:44,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:14:44,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:14:44,116 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 00:14:45,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:45,279 INFO L93 Difference]: Finished difference Result 864 states and 974 transitions. [2025-01-10 00:14:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:14:45,280 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 00:14:45,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:45,282 INFO L225 Difference]: With dead ends: 864 [2025-01-10 00:14:45,282 INFO L226 Difference]: Without dead ends: 864 [2025-01-10 00:14:45,282 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 00:14:45,283 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 559 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:14:45,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 890 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-10 00:14:45,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2025-01-10 00:14:45,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 856. [2025-01-10 00:14:45,292 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 00:14:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 966 transitions. [2025-01-10 00:14:45,294 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 966 transitions. Word has length 15 [2025-01-10 00:14:45,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:45,295 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 966 transitions. [2025-01-10 00:14:45,295 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 00:14:45,295 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 966 transitions. [2025-01-10 00:14:45,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-10 00:14:45,295 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:45,295 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:14:45,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-10 00:14:45,500 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 00:14:45,500 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 00:14:45,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1756085437, now seen corresponding path program 1 times [2025-01-10 00:14:45,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:45,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917323346] [2025-01-10 00:14:45,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:45,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:45,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:45,503 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 00:14:45,508 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 00:14:45,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:14:45,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:14:45,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:45,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:45,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:14:45,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:45,603 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 00:14:45,698 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 00:14:45,698 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:45,699 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:45,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917323346] [2025-01-10 00:14:45,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917323346] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:45,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:45,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:14:45,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778433318] [2025-01-10 00:14:45,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:45,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:14:45,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:45,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:14:45,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:14:45,699 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 00:14:47,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:47,144 INFO L93 Difference]: Finished difference Result 1033 states and 1134 transitions. [2025-01-10 00:14:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:14:47,146 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 00:14:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:47,148 INFO L225 Difference]: With dead ends: 1033 [2025-01-10 00:14:47,148 INFO L226 Difference]: Without dead ends: 1033 [2025-01-10 00:14:47,149 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 00:14:47,149 INFO L435 NwaCegarLoop]: 739 mSDtfsCounter, 384 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:14:47,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1433 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-10 00:14:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2025-01-10 00:14:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 970. [2025-01-10 00:14:47,160 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 00:14:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1104 transitions. [2025-01-10 00:14:47,163 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1104 transitions. Word has length 15 [2025-01-10 00:14:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:47,164 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1104 transitions. [2025-01-10 00:14:47,164 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 00:14:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1104 transitions. [2025-01-10 00:14:47,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-10 00:14:47,165 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:47,165 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 00:14:47,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-10 00:14:47,365 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 00:14:47,367 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 00:14:47,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash 243083192, now seen corresponding path program 1 times [2025-01-10 00:14:47,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:47,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243469059] [2025-01-10 00:14:47,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:47,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:47,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:47,375 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 00:14:47,395 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 00:14:47,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 00:14:47,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 00:14:47,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:47,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:47,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:14:47,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:47,555 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 00:14:47,725 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 00:14:47,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:14:48,073 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 00:14:48,074 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:48,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243469059] [2025-01-10 00:14:48,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243469059] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:14:48,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:14:48,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-01-10 00:14:48,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713690325] [2025-01-10 00:14:48,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:14:48,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:14:48,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:48,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:14:48,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:14:48,076 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 00:14:52,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:52,394 INFO L93 Difference]: Finished difference Result 1389 states and 1624 transitions. [2025-01-10 00:14:52,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:14:52,395 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 00:14:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:52,400 INFO L225 Difference]: With dead ends: 1389 [2025-01-10 00:14:52,401 INFO L226 Difference]: Without dead ends: 1389 [2025-01-10 00:14:52,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-01-10 00:14:52,401 INFO L435 NwaCegarLoop]: 766 mSDtfsCounter, 1016 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 4.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:14:52,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 2236 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2025-01-10 00:14:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2025-01-10 00:14:52,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1134. [2025-01-10 00:14:52,421 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 00:14:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1336 transitions. [2025-01-10 00:14:52,425 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1336 transitions. Word has length 34 [2025-01-10 00:14:52,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:52,425 INFO L471 AbstractCegarLoop]: Abstraction has 1134 states and 1336 transitions. [2025-01-10 00:14:52,425 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 00:14:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1336 transitions. [2025-01-10 00:14:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-10 00:14:52,427 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:52,427 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 00:14:52,437 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 00:14:52,627 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 00:14:52,628 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 00:14:52,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:52,628 INFO L85 PathProgramCache]: Analyzing trace with hash 335697987, now seen corresponding path program 1 times [2025-01-10 00:14:52,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:52,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236669123] [2025-01-10 00:14:52,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:52,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:52,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:52,631 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 00:14:52,631 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 00:14:52,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-10 00:14:52,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-10 00:14:52,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:52,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:52,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:14:52,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:52,800 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 00:14:52,801 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:52,801 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:52,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236669123] [2025-01-10 00:14:52,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236669123] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:52,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:52,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:14:52,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686739807] [2025-01-10 00:14:52,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:52,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:14:52,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:52,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:14:52,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:14:52,802 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 00:14:52,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:52,865 INFO L93 Difference]: Finished difference Result 823 states and 900 transitions. [2025-01-10 00:14:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:14:52,865 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 00:14:52,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:52,867 INFO L225 Difference]: With dead ends: 823 [2025-01-10 00:14:52,867 INFO L226 Difference]: Without dead ends: 823 [2025-01-10 00:14:52,867 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 00:14:52,868 INFO L435 NwaCegarLoop]: 713 mSDtfsCounter, 56 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 00:14:52,868 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 00:14:52,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2025-01-10 00:14:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 821. [2025-01-10 00:14:52,877 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 00:14:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 898 transitions. [2025-01-10 00:14:52,879 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 898 transitions. Word has length 49 [2025-01-10 00:14:52,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:52,880 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 898 transitions. [2025-01-10 00:14:52,880 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 00:14:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 898 transitions. [2025-01-10 00:14:52,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-01-10 00:14:52,882 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:52,882 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 00:14:52,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 00:14:53,083 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 00:14:53,083 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 00:14:53,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:53,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1208191113, now seen corresponding path program 1 times [2025-01-10 00:14:53,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:53,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807001606] [2025-01-10 00:14:53,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:53,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:53,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:53,087 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 00:14:53,089 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 00:14:53,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-01-10 00:14:53,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-01-10 00:14:53,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:53,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:53,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:14:53,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:53,262 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 00:14:53,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:14:53,652 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 00:14:53,667 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:14:53,667 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 00:14:53,691 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 00:14:53,691 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:53,691 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:53,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807001606] [2025-01-10 00:14:53,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807001606] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:53,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:53,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:14:53,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235307800] [2025-01-10 00:14:53,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:53,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:14:53,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:53,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:14:53,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:14:53,692 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 00:14:54,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:54,744 INFO L93 Difference]: Finished difference Result 783 states and 860 transitions. [2025-01-10 00:14:54,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:14:54,745 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 00:14:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:54,747 INFO L225 Difference]: With dead ends: 783 [2025-01-10 00:14:54,747 INFO L226 Difference]: Without dead ends: 783 [2025-01-10 00:14:54,747 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 00:14:54,747 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, 1.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:14:54,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 597 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-10 00:14:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2025-01-10 00:14:54,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 746. [2025-01-10 00:14:54,755 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 00:14:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 786 transitions. [2025-01-10 00:14:54,756 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 786 transitions. Word has length 57 [2025-01-10 00:14:54,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:54,756 INFO L471 AbstractCegarLoop]: Abstraction has 746 states and 786 transitions. [2025-01-10 00:14:54,756 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 00:14:54,756 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 786 transitions. [2025-01-10 00:14:54,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-01-10 00:14:54,757 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:54,757 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 00:14:54,766 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 00:14:54,961 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 00:14:54,961 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 00:14:54,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash -829946597, now seen corresponding path program 1 times [2025-01-10 00:14:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:54,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029627220] [2025-01-10 00:14:54,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:54,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:54,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:54,965 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 00:14:54,966 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 00:14:55,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-01-10 00:14:55,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-01-10 00:14:55,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:55,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:55,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 00:14:55,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:55,140 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 00:14:55,154 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 00:14:55,174 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 00:14:55,182 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 00:14:55,182 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:55,182 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:55,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029627220] [2025-01-10 00:14:55,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029627220] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:55,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:55,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:14:55,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092269910] [2025-01-10 00:14:55,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:55,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:14:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:55,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:14:55,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:14:55,184 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 00:14:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:56,307 INFO L93 Difference]: Finished difference Result 745 states and 785 transitions. [2025-01-10 00:14:56,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:14:56,308 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 00:14:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:56,310 INFO L225 Difference]: With dead ends: 745 [2025-01-10 00:14:56,310 INFO L226 Difference]: Without dead ends: 745 [2025-01-10 00:14:56,310 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 00:14:56,310 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 2 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:14:56,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1719 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-10 00:14:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2025-01-10 00:14:56,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2025-01-10 00:14:56,317 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 00:14:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 785 transitions. [2025-01-10 00:14:56,318 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 785 transitions. Word has length 62 [2025-01-10 00:14:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:56,318 INFO L471 AbstractCegarLoop]: Abstraction has 745 states and 785 transitions. [2025-01-10 00:14:56,318 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 00:14:56,318 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 785 transitions. [2025-01-10 00:14:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-01-10 00:14:56,319 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:56,319 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 00:14:56,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-10 00:14:56,523 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 00:14:56,523 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 00:14:56,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash -829946596, now seen corresponding path program 1 times [2025-01-10 00:14:56,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:56,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109520201] [2025-01-10 00:14:56,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:56,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:56,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:56,526 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 00:14:56,528 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 00:14:56,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-01-10 00:14:56,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-01-10 00:14:56,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:56,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:56,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 00:14:56,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:56,693 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 00:14:56,707 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 00:14:56,714 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 00:14:56,748 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 00:14:56,762 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 00:14:56,763 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:56,763 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:56,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109520201] [2025-01-10 00:14:56,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109520201] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:56,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:56,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:14:56,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775977737] [2025-01-10 00:14:56,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:56,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:14:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:56,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:14:56,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:14:56,764 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 00:14:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:58,167 INFO L93 Difference]: Finished difference Result 744 states and 784 transitions. [2025-01-10 00:14:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:14:58,168 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 00:14:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:58,170 INFO L225 Difference]: With dead ends: 744 [2025-01-10 00:14:58,170 INFO L226 Difference]: Without dead ends: 744 [2025-01-10 00:14:58,170 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 00:14:58,170 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 1 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:14:58,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1744 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-10 00:14:58,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2025-01-10 00:14:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2025-01-10 00:14:58,178 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 00:14:58,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 784 transitions. [2025-01-10 00:14:58,179 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 784 transitions. Word has length 62 [2025-01-10 00:14:58,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:58,180 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 784 transitions. [2025-01-10 00:14:58,180 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 00:14:58,180 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 784 transitions. [2025-01-10 00:14:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-10 00:14:58,182 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:58,182 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 00:14:58,191 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 00:14:58,382 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 00:14:58,382 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 00:14:58,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:14:58,383 INFO L85 PathProgramCache]: Analyzing trace with hash -863002622, now seen corresponding path program 1 times [2025-01-10 00:14:58,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:14:58,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718115855] [2025-01-10 00:14:58,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:14:58,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:14:58,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:14:58,385 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 00:14:58,387 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 00:14:58,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-10 00:14:58,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-10 00:14:58,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:14:58,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:14:58,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 00:14:58,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:14:58,541 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 00:14:58,606 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 00:14:58,615 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 00:14:58,616 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:14:58,616 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:14:58,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718115855] [2025-01-10 00:14:58,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718115855] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:14:58,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:14:58,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:14:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225500032] [2025-01-10 00:14:58,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:14:58,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:14:58,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:14:58,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:14:58,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:14:58,618 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 00:14:59,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:14:59,929 INFO L93 Difference]: Finished difference Result 756 states and 799 transitions. [2025-01-10 00:14:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:14:59,930 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 00:14:59,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:14:59,933 INFO L225 Difference]: With dead ends: 756 [2025-01-10 00:14:59,933 INFO L226 Difference]: Without dead ends: 756 [2025-01-10 00:14:59,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-10 00:14:59,933 INFO L435 NwaCegarLoop]: 677 mSDtfsCounter, 6 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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 00:14:59,933 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 00:14:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2025-01-10 00:14:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 750. [2025-01-10 00:14:59,942 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 00:14:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 794 transitions. [2025-01-10 00:14:59,945 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 794 transitions. Word has length 70 [2025-01-10 00:14:59,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:14:59,945 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 794 transitions. [2025-01-10 00:14:59,946 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 00:14:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 794 transitions. [2025-01-10 00:14:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-10 00:14:59,946 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:14:59,946 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 00:14:59,955 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 00:15:00,146 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 00:15:00,147 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 00:15:00,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:15:00,147 INFO L85 PathProgramCache]: Analyzing trace with hash -863002621, now seen corresponding path program 1 times [2025-01-10 00:15:00,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:15:00,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318082293] [2025-01-10 00:15:00,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:15:00,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:15:00,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:15:00,149 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 00:15:00,160 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 00:15:00,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-10 00:15:00,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-10 00:15:00,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:15:00,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:15:00,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:15:00,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:15:00,325 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 00:15:00,325 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:15:00,325 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:15:00,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318082293] [2025-01-10 00:15:00,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318082293] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:15:00,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:15:00,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:15:00,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544757248] [2025-01-10 00:15:00,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:15:00,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:15:00,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:15:00,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:15:00,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:15:00,326 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 00:15:00,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:15:00,348 INFO L93 Difference]: Finished difference Result 747 states and 788 transitions. [2025-01-10 00:15:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:15:00,348 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 00:15:00,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:15:00,350 INFO L225 Difference]: With dead ends: 747 [2025-01-10 00:15:00,350 INFO L226 Difference]: Without dead ends: 747 [2025-01-10 00:15:00,350 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 00:15:00,351 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 00:15:00,351 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 00:15:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2025-01-10 00:15:00,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2025-01-10 00:15:00,359 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 00:15:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 788 transitions. [2025-01-10 00:15:00,361 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 788 transitions. Word has length 70 [2025-01-10 00:15:00,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:15:00,361 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 788 transitions. [2025-01-10 00:15:00,361 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 00:15:00,361 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 788 transitions. [2025-01-10 00:15:00,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-10 00:15:00,362 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:15:00,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:15:00,372 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 00:15:00,562 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 00:15:00,562 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 00:15:00,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:15:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash 398933575, now seen corresponding path program 1 times [2025-01-10 00:15:00,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:15:00,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863934238] [2025-01-10 00:15:00,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:15:00,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:15:00,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:15:00,565 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 00:15:00,566 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 00:15:00,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-10 00:15:00,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-10 00:15:00,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:15:00,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:15:00,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:15:00,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:15:00,735 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 00:15:00,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:15:00,783 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 00:15:00,783 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:15:00,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863934238] [2025-01-10 00:15:00,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863934238] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:15:00,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:15:00,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-01-10 00:15:00,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154797214] [2025-01-10 00:15:00,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:15:00,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:15:00,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:15:00,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:15:00,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:15:00,784 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 00:15:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:15:00,866 INFO L93 Difference]: Finished difference Result 759 states and 805 transitions. [2025-01-10 00:15:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 00:15:00,867 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 00:15:00,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:15:00,869 INFO L225 Difference]: With dead ends: 759 [2025-01-10 00:15:00,869 INFO L226 Difference]: Without dead ends: 759 [2025-01-10 00:15:00,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-01-10 00:15:00,869 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 6 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 00:15:00,870 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 00:15:00,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2025-01-10 00:15:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 757. [2025-01-10 00:15:00,876 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 00:15:00,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 803 transitions. [2025-01-10 00:15:00,877 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 803 transitions. Word has length 71 [2025-01-10 00:15:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:15:00,878 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 803 transitions. [2025-01-10 00:15:00,878 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 00:15:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 803 transitions. [2025-01-10 00:15:00,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-10 00:15:00,878 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:15:00,878 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 00:15:00,887 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 00:15:01,079 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 00:15:01,079 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 00:15:01,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:15:01,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1398306494, now seen corresponding path program 2 times [2025-01-10 00:15:01,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:15:01,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689963140] [2025-01-10 00:15:01,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:15:01,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:15:01,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:15:01,083 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 00:15:01,084 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 00:15:01,188 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 74 statements into 2 equivalence classes. [2025-01-10 00:15:17,507 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 74 of 74 statements. [2025-01-10 00:15:17,508 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:15:17,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:15:17,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-10 00:15:17,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:15:17,581 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:15:17,581 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 00:15:17,591 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 00:15:17,714 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:15:17,714 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 00:15:17,746 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 00:15:17,760 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 00:15:17,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:15:17,829 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-01-10 00:15:17,829 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 00:15:17,838 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 00:15:17,844 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:15:17,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689963140] [2025-01-10 00:15:17,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689963140] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:15:17,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1627175384] [2025-01-10 00:15:17,845 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:15:17,845 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-10 00:15:17,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-10 00:15:17,869 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 00:15:17,871 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 00:15:18,037 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 74 statements into 2 equivalence classes. [2025-01-10 00:15:18,424 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 74 of 74 statements. [2025-01-10 00:15:18,424 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:15:18,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:15:18,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 00:15:18,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:15:18,547 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 00:15:18,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:15:18,727 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 00:15:18,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1627175384] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:15:18,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:15:18,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-01-10 00:15:18,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691456592] [2025-01-10 00:15:18,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:15:18,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 00:15:18,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:15:18,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 00:15:18,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-01-10 00:15:18,729 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 00:15:23,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:15:23,860 INFO L93 Difference]: Finished difference Result 773 states and 826 transitions. [2025-01-10 00:15:23,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-10 00:15:23,861 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 00:15:23,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:15:23,863 INFO L225 Difference]: With dead ends: 773 [2025-01-10 00:15:23,863 INFO L226 Difference]: Without dead ends: 769 [2025-01-10 00:15:23,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2025-01-10 00:15:23,863 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 463 mSDsluCounter, 7205 mSDsCounter, 0 mSdLazyCounter, 5169 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s 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, 4.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:15:23,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 7660 Invalid, 5187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 5169 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-01-10 00:15:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2025-01-10 00:15:23,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 765. [2025-01-10 00:15:23,870 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 00:15:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 814 transitions. [2025-01-10 00:15:23,871 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 814 transitions. Word has length 74 [2025-01-10 00:15:23,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:15:23,872 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 814 transitions. [2025-01-10 00:15:23,872 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 00:15:23,872 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 814 transitions. [2025-01-10 00:15:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-01-10 00:15:23,872 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:15:23,872 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 00:15:23,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2025-01-10 00:15:24,094 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 00:15:24,273 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 00:15:24,273 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 00:15:24,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:15:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1704590115, now seen corresponding path program 1 times [2025-01-10 00:15:24,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:15:24,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164600577] [2025-01-10 00:15:24,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:15:24,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:15:24,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:15:24,276 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 00:15:24,277 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 00:15:24,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-01-10 00:15:24,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-01-10 00:15:24,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:15:24,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:15:24,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 00:15:24,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:15:24,555 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 00:15:24,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:15:24,911 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 00:15:24,911 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:15:24,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164600577] [2025-01-10 00:15:24,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164600577] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:15:24,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:15:24,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-01-10 00:15:24,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913778994] [2025-01-10 00:15:24,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:15:24,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 00:15:24,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:15:24,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 00:15:24,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-01-10 00:15:24,912 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 00:15:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:15:25,977 INFO L93 Difference]: Finished difference Result 789 states and 853 transitions. [2025-01-10 00:15:25,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-10 00:15:25,978 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 00:15:25,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:15:25,980 INFO L225 Difference]: With dead ends: 789 [2025-01-10 00:15:25,980 INFO L226 Difference]: Without dead ends: 783 [2025-01-10 00:15:25,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-01-10 00:15:25,982 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 15 mSDsluCounter, 8182 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 00:15:25,982 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 00:15:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2025-01-10 00:15:25,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2025-01-10 00:15:25,989 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 00:15:25,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 837 transitions. [2025-01-10 00:15:25,993 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 837 transitions. Word has length 80 [2025-01-10 00:15:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:15:25,993 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 837 transitions. [2025-01-10 00:15:25,993 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 00:15:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 837 transitions. [2025-01-10 00:15:25,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-01-10 00:15:25,993 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:15:25,993 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 00:15:26,004 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 00:15:26,194 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 00:15:26,194 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 00:15:26,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:15:26,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1897801443, now seen corresponding path program 2 times [2025-01-10 00:15:26,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:15:26,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278418380] [2025-01-10 00:15:26,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:15:26,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:15:26,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:15:26,197 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 00:15:26,198 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 00:15:26,328 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 92 statements into 2 equivalence classes. [2025-01-10 00:15:35,776 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 92 of 92 statements. [2025-01-10 00:15:35,776 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:15:35,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:15:35,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-01-10 00:15:35,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:15:35,861 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 00:15:35,871 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:15:35,871 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 00:15:35,891 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 00:15:35,897 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 00:15:35,951 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 00:15:35,955 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 00:15:36,260 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:15:36,261 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 00:15:36,267 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 00:15:36,290 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 00:15:36,294 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 00:15:36,306 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 00:15:36,307 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:15:36,596 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 00:15:36,602 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:15:36,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278418380] [2025-01-10 00:15:36,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278418380] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:15:36,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [498453188] [2025-01-10 00:15:36,602 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:15:36,602 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-10 00:15:36,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-10 00:15:36,604 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 00:15:36,605 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 00:15:36,798 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 92 statements into 2 equivalence classes. [2025-01-10 00:15:37,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 92 of 92 statements. [2025-01-10 00:15:37,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:15:37,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:15:37,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-10 00:15:37,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:15:37,795 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 00:15:37,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:15:39,063 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 00:15:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [498453188] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:15:39,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:15:39,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-01-10 00:15:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284057325] [2025-01-10 00:15:39,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:15:39,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-01-10 00:15:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:15:39,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-01-10 00:15:39,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2025-01-10 00:15:39,066 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) [2025-01-10 00:15:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:15:54,984 INFO L93 Difference]: Finished difference Result 826 states and 910 transitions. [2025-01-10 00:15:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2025-01-10 00:15:54,985 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 92 [2025-01-10 00:15:54,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:15:54,987 INFO L225 Difference]: With dead ends: 826 [2025-01-10 00:15:54,987 INFO L226 Difference]: Without dead ends: 818 [2025-01-10 00:15:54,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3106, Invalid=14987, Unknown=1, NotChecked=266, Total=18360 [2025-01-10 00:15:54,990 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 479 mSDsluCounter, 12680 mSDsCounter, 0 mSdLazyCounter, 10606 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 13135 SdHoareTripleChecker+Invalid, 10646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 10606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2025-01-10 00:15:54,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 13135 Invalid, 10646 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 10606 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2025-01-10 00:15:54,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2025-01-10 00:15:54,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 816. [2025-01-10 00:15:54,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 540 states have (on average 1.612962962962963) internal successors, (871), 810 states have internal predecessors, (871), 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 00:15:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 878 transitions. [2025-01-10 00:15:54,998 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 878 transitions. Word has length 92 [2025-01-10 00:15:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:15:54,998 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 878 transitions. [2025-01-10 00:15:54,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2025-01-10 00:15:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 878 transitions. [2025-01-10 00:15:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-01-10 00:15:54,999 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:15:54,999 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:15:55,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-10 00:15:55,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2025-01-10 00:15:55,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-01-10 00:15:55,399 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:15:55,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:15:55,400 INFO L85 PathProgramCache]: Analyzing trace with hash -89121634, now seen corresponding path program 1 times [2025-01-10 00:15:55,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:15:55,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113486424] [2025-01-10 00:15:55,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:15:55,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:15:55,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:15:55,403 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:15:55,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-10 00:15:55,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-10 00:15:55,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-10 00:15:55,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:15:55,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:15:55,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-01-10 00:15:55,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:15:55,783 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:15:55,783 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 00:15:55,793 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 00:15:56,108 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:15:56,108 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 00:15:56,158 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:15:56,158 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 00:15:56,170 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 00:15:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-01-10 00:15:56,181 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:15:56,239 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2053 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2053) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-01-10 00:15:56,485 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2025-01-10 00:15:56,485 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 37 treesize of output 36 [2025-01-10 00:15:56,492 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2053 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2099))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2053)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2025-01-10 00:15:56,494 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:15:56,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113486424] [2025-01-10 00:15:56,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113486424] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:15:56,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1988840447] [2025-01-10 00:15:56,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:15:56,494 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-10 00:15:56,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-10 00:15:56,496 INFO L229 MonitoredProcess]: Starting monitored process 24 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 00:15:56,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2025-01-10 00:15:56,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-10 00:15:59,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-10 00:15:59,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:15:59,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:15:59,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-01-10 00:15:59,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:15:59,237 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:15:59,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2025-01-10 00:15:59,467 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2025-01-10 00:15:59,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2025-01-10 00:15:59,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 00:15:59,650 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 34 treesize of output 16 [2025-01-10 00:16:00,548 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:16:00,548 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 54 treesize of output 51 [2025-01-10 00:16:00,663 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:16:00,663 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 54 treesize of output 51 [2025-01-10 00:16:00,693 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 43 treesize of output 19 [2025-01-10 00:16:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-01-10 00:16:00,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:16:00,742 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2506 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_2506) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2025-01-10 00:16:00,751 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2506 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2506) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-01-10 00:16:01,018 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2552 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2506 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2552))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2506)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-01-10 00:16:01,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1988840447] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:16:01,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:16:01,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2025-01-10 00:16:01,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714818731] [2025-01-10 00:16:01,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:16:01,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-10 00:16:01,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:16:01,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-10 00:16:01,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=461, Unknown=12, NotChecked=240, Total=812 [2025-01-10 00:16:01,021 INFO L87 Difference]: Start difference. First operand 816 states and 878 transitions. Second operand has 22 states, 19 states have (on average 7.684210526315789) internal successors, (146), 21 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 00:16:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:16:05,856 INFO L93 Difference]: Finished difference Result 1486 states and 1600 transitions. [2025-01-10 00:16:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-10 00:16:05,857 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 7.684210526315789) internal successors, (146), 21 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 117 [2025-01-10 00:16:05,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:16:05,860 INFO L225 Difference]: With dead ends: 1486 [2025-01-10 00:16:05,860 INFO L226 Difference]: Without dead ends: 1486 [2025-01-10 00:16:05,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=1268, Unknown=15, NotChecked=390, Total=1892 [2025-01-10 00:16:05,861 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 1033 mSDsluCounter, 4164 mSDsCounter, 0 mSdLazyCounter, 4699 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 4525 SdHoareTripleChecker+Invalid, 4720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:16:05,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 4525 Invalid, 4720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 4699 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-01-10 00:16:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2025-01-10 00:16:05,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 815. [2025-01-10 00:16:05,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 540 states have (on average 1.6111111111111112) internal successors, (870), 809 states have internal predecessors, (870), 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 00:16:05,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 877 transitions. [2025-01-10 00:16:05,873 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 877 transitions. Word has length 117 [2025-01-10 00:16:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:16:05,873 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 877 transitions. [2025-01-10 00:16:05,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 7.684210526315789) internal successors, (146), 21 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 00:16:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 877 transitions. [2025-01-10 00:16:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-01-10 00:16:05,875 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:16:05,875 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:16:05,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-10 00:16:06,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2025-01-10 00:16:06,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-01-10 00:16:06,276 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-01-10 00:16:06,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:16:06,276 INFO L85 PathProgramCache]: Analyzing trace with hash -89121633, now seen corresponding path program 1 times [2025-01-10 00:16:06,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:16:06,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110296649] [2025-01-10 00:16:06,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:16:06,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:16:06,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:16:06,279 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:16:06,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-10 00:16:06,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-10 00:16:06,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-10 00:16:06,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:16:06,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:16:06,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 111 conjuncts are in the unsatisfiable core [2025-01-10 00:16:06,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:16:06,710 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:16:06,711 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 00:16:06,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2025-01-10 00:16:06,729 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 00:16:06,733 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 00:16:06,801 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 00:16:06,804 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