./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:47:32,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:47:32,638 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 07:47:32,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:47:32,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:47:32,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:47:32,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:47:32,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:47:32,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:47:32,672 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:47:32,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:47:32,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:47:32,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:47:32,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:47:32,673 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:47:32,674 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:47:32,674 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:47:32,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:47:32,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:47:32,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:47:32,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:47:32,675 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:47:32,675 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:47:32,675 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 07:47:32,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 07:47:32,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:47:32,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:47:32,675 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:47:32,675 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:47:32,675 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 -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2025-02-08 07:47:32,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:47:32,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:47:32,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:47:32,984 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:47:32,985 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:47:32,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2025-02-08 07:47:34,317 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/497762569/fc4b1270e8764efc826f83d860d74ace/FLAGacfc86dac [2025-02-08 07:47:34,736 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:47:34,740 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2025-02-08 07:47:34,761 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/497762569/fc4b1270e8764efc826f83d860d74ace/FLAGacfc86dac [2025-02-08 07:47:34,780 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/497762569/fc4b1270e8764efc826f83d860d74ace [2025-02-08 07:47:34,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:47:34,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:47:34,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:47:34,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:47:34,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:47:34,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:47:34" (1/1) ... [2025-02-08 07:47:34,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf8b581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:34, skipping insertion in model container [2025-02-08 07:47:34,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:47:34" (1/1) ... [2025-02-08 07:47:34,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:47:35,172 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,206 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,209 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,216 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,221 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,259 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,260 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,263 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,263 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,267 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,268 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,269 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,270 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,274 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:35,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:47:35,305 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-08 07:47:35,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d94cde8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:35, skipping insertion in model container [2025-02-08 07:47:35,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:47:35,306 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-08 07:47:35,308 INFO L158 Benchmark]: Toolchain (without parser) took 522.99ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 83.3MB in the end (delta: 18.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 07:47:35,309 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 07:47:35,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 520.78ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 83.3MB in the end (delta: 18.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 07:47:35,312 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 520.78ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 83.3MB in the end (delta: 18.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 747]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:47:37,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:47:37,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 07:47:37,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:47:37,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:47:37,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:47:37,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:47:37,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:47:37,436 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:47:37,437 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:47:37,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:47:37,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:47:37,438 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:47:37,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:47:37,438 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:47:37,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:47:37,439 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:47:37,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:47:37,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:47:37,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:47:37,439 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:47:37,439 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:47:37,439 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:47:37,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:47:37,440 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:47:37,440 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 07:47:37,440 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 07:47:37,440 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:47:37,440 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:47:37,440 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:47:37,441 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:47:37,441 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:47:37,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:47:37,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:47:37,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:47:37,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:47:37,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:47:37,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:47:37,442 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 07:47:37,442 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 07:47:37,442 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:47:37,442 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:47:37,442 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:47:37,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:47:37,442 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 -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2025-02-08 07:47:37,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:47:37,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:47:37,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:47:37,750 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:47:37,750 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:47:37,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2025-02-08 07:47:39,135 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/722fccc44/4455ec5c27a9436399b918cea1cab135/FLAGa4763f70d [2025-02-08 07:47:39,421 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:47:39,425 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2025-02-08 07:47:39,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/722fccc44/4455ec5c27a9436399b918cea1cab135/FLAGa4763f70d [2025-02-08 07:47:39,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/722fccc44/4455ec5c27a9436399b918cea1cab135 [2025-02-08 07:47:39,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:47:39,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:47:39,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:47:39,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:47:39,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:47:39,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:47:39" (1/1) ... [2025-02-08 07:47:39,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ea2e571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:39, skipping insertion in model container [2025-02-08 07:47:39,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:47:39" (1/1) ... [2025-02-08 07:47:39,506 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:47:39,831 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,869 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,873 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,878 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,884 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,921 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,921 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,923 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,924 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,926 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,928 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,929 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,929 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,934 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:39,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:47:39,971 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-08 07:47:39,982 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:47:40,027 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,056 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,061 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,066 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,071 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,105 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,107 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,111 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,111 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,113 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,114 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,115 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,116 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,118 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:47:40,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:47:40,128 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 07:47:40,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:47:40,274 INFO L204 MainTranslator]: Completed translation [2025-02-08 07:47:40,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40 WrapperNode [2025-02-08 07:47:40,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:47:40,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 07:47:40,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 07:47:40,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 07:47:40,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,328 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,385 INFO L138 Inliner]: procedures = 180, calls = 279, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1024 [2025-02-08 07:47:40,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 07:47:40,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 07:47:40,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 07:47:40,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 07:47:40,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,409 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,495 INFO L175 MemorySlicer]: Split 255 memory accesses to 3 slices as follows [2, 219, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2025-02-08 07:47:40,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,550 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,553 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,563 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 07:47:40,574 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 07:47:40,575 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 07:47:40,575 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 07:47:40,576 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (1/1) ... [2025-02-08 07:47:40,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:47:40,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:40,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 07:47:40,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 07:47:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-02-08 07:47:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-02-08 07:47:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 07:47:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 07:47:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-08 07:47:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 07:47:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 07:47:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-08 07:47:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 07:47:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 07:47:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 07:47:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 07:47:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 07:47:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 07:47:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 07:47:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 07:47:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-08 07:47:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 07:47:40,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 07:47:40,816 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 07:47:40,818 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 07:47:44,646 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L733: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-08 07:47:44,756 INFO L? ?]: Removed 1091 outVars from TransFormulas that were not future-live. [2025-02-08 07:47:44,756 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 07:47:44,794 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 07:47:44,795 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 07:47:44,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:47:44 BoogieIcfgContainer [2025-02-08 07:47:44,796 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 07:47:44,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 07:47:44,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 07:47:44,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 07:47:44,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 07:47:39" (1/3) ... [2025-02-08 07:47:44,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f4b31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:47:44, skipping insertion in model container [2025-02-08 07:47:44,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:47:40" (2/3) ... [2025-02-08 07:47:44,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f4b31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:47:44, skipping insertion in model container [2025-02-08 07:47:44,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:47:44" (3/3) ... [2025-02-08 07:47:44,816 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-1.i [2025-02-08 07:47:44,829 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 07:47:44,831 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test3-1.i that has 6 procedures, 1093 locations, 1 initial locations, 38 loop locations, and 527 error locations. [2025-02-08 07:47:44,881 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 07:47:44,893 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;@d419839, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 07:47:44,893 INFO L334 AbstractCegarLoop]: Starting to check reachability of 527 error locations. [2025-02-08 07:47:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 1083 states, 544 states have (on average 2.1911764705882355) internal successors, (1192), 1075 states have internal predecessors, (1192), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-08 07:47:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-02-08 07:47:44,906 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:44,907 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-02-08 07:47:44,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr524REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:47:44,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:44,915 INFO L85 PathProgramCache]: Analyzing trace with hash 40127, now seen corresponding path program 1 times [2025-02-08 07:47:44,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:44,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660538883] [2025-02-08 07:47:44,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:44,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:44,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:44,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:44,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 07:47:45,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 07:47:45,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 07:47:45,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:45,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:45,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:47:45,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:45,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:47:45,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:45,149 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:45,149 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:45,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660538883] [2025-02-08 07:47:45,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660538883] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:45,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:45,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:47:45,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085093192] [2025-02-08 07:47:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:45,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:47:45,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:45,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:47:45,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:47:45,183 INFO L87 Difference]: Start difference. First operand has 1083 states, 544 states have (on average 2.1911764705882355) internal successors, (1192), 1075 states have internal predecessors, (1192), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:46,701 INFO L93 Difference]: Finished difference Result 1078 states and 1143 transitions. [2025-02-08 07:47:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:47:46,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2025-02-08 07:47:46,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:46,724 INFO L225 Difference]: With dead ends: 1078 [2025-02-08 07:47:46,724 INFO L226 Difference]: Without dead ends: 1073 [2025-02-08 07:47:46,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:47:46,730 INFO L435 NwaCegarLoop]: 660 mSDtfsCounter, 988 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:46,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 723 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-08 07:47:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2025-02-08 07:47:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1065. [2025-02-08 07:47:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 545 states have (on average 2.0422018348623854) internal successors, (1113), 1058 states have internal predecessors, (1113), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:47:46,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1126 transitions. [2025-02-08 07:47:46,838 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1126 transitions. Word has length 2 [2025-02-08 07:47:46,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:46,839 INFO L471 AbstractCegarLoop]: Abstraction has 1065 states and 1126 transitions. [2025-02-08 07:47:46,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1126 transitions. [2025-02-08 07:47:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-02-08 07:47:46,839 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:46,839 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-02-08 07:47:46,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 07:47:47,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:47,040 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:47:47,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash 40128, now seen corresponding path program 1 times [2025-02-08 07:47:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:47,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460394951] [2025-02-08 07:47:47,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:47,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:47,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:47,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:47,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 07:47:47,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 07:47:47,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 07:47:47,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:47,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:47,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:47:47,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:47,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:47:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:47,176 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:47,177 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:47,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460394951] [2025-02-08 07:47:47,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460394951] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:47,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:47,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:47:47,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961748126] [2025-02-08 07:47:47,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:47,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:47:47,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:47,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:47:47,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:47:47,179 INFO L87 Difference]: Start difference. First operand 1065 states and 1126 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:49,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:49,307 INFO L93 Difference]: Finished difference Result 1488 states and 1586 transitions. [2025-02-08 07:47:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:47:49,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2025-02-08 07:47:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:49,313 INFO L225 Difference]: With dead ends: 1488 [2025-02-08 07:47:49,313 INFO L226 Difference]: Without dead ends: 1488 [2025-02-08 07:47:49,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:47:49,314 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 453 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:49,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1519 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-08 07:47:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2025-02-08 07:47:49,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1281. [2025-02-08 07:47:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 762 states have (on average 2.0249343832021) internal successors, (1543), 1274 states have internal predecessors, (1543), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:47:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1556 transitions. [2025-02-08 07:47:49,341 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1556 transitions. Word has length 2 [2025-02-08 07:47:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:49,341 INFO L471 AbstractCegarLoop]: Abstraction has 1281 states and 1556 transitions. [2025-02-08 07:47:49,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1556 transitions. [2025-02-08 07:47:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 07:47:49,342 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:49,342 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:47:49,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 07:47:49,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:49,546 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:47:49,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:49,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1114717982, now seen corresponding path program 1 times [2025-02-08 07:47:49,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:49,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343702087] [2025-02-08 07:47:49,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:49,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:49,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:49,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:49,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 07:47:49,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 07:47:49,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 07:47:49,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:49,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:49,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:47:49,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:49,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:47:49,761 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-02-08 07:47:49,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2025-02-08 07:47:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:49,837 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:49,837 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:49,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343702087] [2025-02-08 07:47:49,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343702087] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:49,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:49,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:47:49,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713459604] [2025-02-08 07:47:49,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:49,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:49,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:49,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:49,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:49,839 INFO L87 Difference]: Start difference. First operand 1281 states and 1556 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:54,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:54,119 INFO L93 Difference]: Finished difference Result 2200 states and 2351 transitions. [2025-02-08 07:47:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:47:54,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 07:47:54,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:54,127 INFO L225 Difference]: With dead ends: 2200 [2025-02-08 07:47:54,127 INFO L226 Difference]: Without dead ends: 2200 [2025-02-08 07:47:54,127 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 [2025-02-08 07:47:54,128 INFO L435 NwaCegarLoop]: 1057 mSDtfsCounter, 1203 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:54,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 2247 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2025-02-08 07:47:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2025-02-08 07:47:54,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 1432. [2025-02-08 07:47:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 913 states have (on average 2.0065717415115008) internal successors, (1832), 1425 states have internal predecessors, (1832), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:47:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1845 transitions. [2025-02-08 07:47:54,167 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1845 transitions. Word has length 7 [2025-02-08 07:47:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:54,167 INFO L471 AbstractCegarLoop]: Abstraction has 1432 states and 1845 transitions. [2025-02-08 07:47:54,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1845 transitions. [2025-02-08 07:47:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 07:47:54,168 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:54,168 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:47:54,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 07:47:54,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:54,372 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:47:54,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash -196517931, now seen corresponding path program 1 times [2025-02-08 07:47:54,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:54,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17927726] [2025-02-08 07:47:54,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:54,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:54,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:54,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:54,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 07:47:54,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 07:47:54,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 07:47:54,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:54,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:54,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:47:54,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:54,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:47:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:54,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:54,547 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:54,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17927726] [2025-02-08 07:47:54,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17927726] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:54,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:54,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:47:54,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437116459] [2025-02-08 07:47:54,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:54,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:47:54,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:54,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:47:54,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:47:54,548 INFO L87 Difference]: Start difference. First operand 1432 states and 1845 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:55,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:55,916 INFO L93 Difference]: Finished difference Result 1981 states and 2620 transitions. [2025-02-08 07:47:55,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:47:55,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2025-02-08 07:47:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:55,922 INFO L225 Difference]: With dead ends: 1981 [2025-02-08 07:47:55,923 INFO L226 Difference]: Without dead ends: 1981 [2025-02-08 07:47:55,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:47:55,923 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 958 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:55,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1246 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 07:47:55,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2025-02-08 07:47:55,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1383. [2025-02-08 07:47:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 913 states have (on average 1.940854326396495) internal successors, (1772), 1376 states have internal predecessors, (1772), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:47:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1785 transitions. [2025-02-08 07:47:55,951 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1785 transitions. Word has length 8 [2025-02-08 07:47:55,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:55,951 INFO L471 AbstractCegarLoop]: Abstraction has 1383 states and 1785 transitions. [2025-02-08 07:47:55,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1785 transitions. [2025-02-08 07:47:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 07:47:55,952 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:55,952 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:47:55,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 07:47:56,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:56,157 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:47:56,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash -196517930, now seen corresponding path program 1 times [2025-02-08 07:47:56,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:56,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227408696] [2025-02-08 07:47:56,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:56,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:56,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:56,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:56,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 07:47:56,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 07:47:56,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 07:47:56,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:56,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:56,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:47:56,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:56,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:47:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:56,309 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:56,310 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:56,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227408696] [2025-02-08 07:47:56,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227408696] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:56,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:56,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:47:56,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223657565] [2025-02-08 07:47:56,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:56,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:47:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:56,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:47:56,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:47:56,310 INFO L87 Difference]: Start difference. First operand 1383 states and 1785 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:58,106 INFO L93 Difference]: Finished difference Result 2089 states and 2727 transitions. [2025-02-08 07:47:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:47:58,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2025-02-08 07:47:58,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:58,112 INFO L225 Difference]: With dead ends: 2089 [2025-02-08 07:47:58,112 INFO L226 Difference]: Without dead ends: 2089 [2025-02-08 07:47:58,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:47:58,113 INFO L435 NwaCegarLoop]: 1181 mSDtfsCounter, 713 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:58,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1626 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-08 07:47:58,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2025-02-08 07:47:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1412. [2025-02-08 07:47:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 952 states have (on average 1.9191176470588236) internal successors, (1827), 1405 states have internal predecessors, (1827), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:47:58,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1840 transitions. [2025-02-08 07:47:58,148 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1840 transitions. Word has length 8 [2025-02-08 07:47:58,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:58,149 INFO L471 AbstractCegarLoop]: Abstraction has 1412 states and 1840 transitions. [2025-02-08 07:47:58,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1840 transitions. [2025-02-08 07:47:58,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 07:47:58,149 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:58,149 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:47:58,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 07:47:58,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:58,350 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:47:58,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1877992991, now seen corresponding path program 1 times [2025-02-08 07:47:58,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:58,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657942879] [2025-02-08 07:47:58,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:58,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:58,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:58,355 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:58,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 07:47:58,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 07:47:58,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 07:47:58,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:58,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:58,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 07:47:58,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:58,551 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:58,551 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:58,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657942879] [2025-02-08 07:47:58,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657942879] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:58,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:58,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:47:58,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245217348] [2025-02-08 07:47:58,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:58,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:58,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:58,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:58,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:58,552 INFO L87 Difference]: Start difference. First operand 1412 states and 1840 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:47:59,166 INFO L93 Difference]: Finished difference Result 1856 states and 2389 transitions. [2025-02-08 07:47:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:47:59,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-08 07:47:59,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:47:59,173 INFO L225 Difference]: With dead ends: 1856 [2025-02-08 07:47:59,173 INFO L226 Difference]: Without dead ends: 1856 [2025-02-08 07:47:59,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:59,175 INFO L435 NwaCegarLoop]: 1128 mSDtfsCounter, 454 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 07:47:59,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 3126 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 07:47:59,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2025-02-08 07:47:59,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1663. [2025-02-08 07:47:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1203 states have (on average 1.9409808811305072) internal successors, (2335), 1656 states have internal predecessors, (2335), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:47:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2348 transitions. [2025-02-08 07:47:59,213 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2348 transitions. Word has length 12 [2025-02-08 07:47:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:47:59,214 INFO L471 AbstractCegarLoop]: Abstraction has 1663 states and 2348 transitions. [2025-02-08 07:47:59,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:47:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2348 transitions. [2025-02-08 07:47:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 07:47:59,215 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:47:59,215 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:47:59,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 07:47:59,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:59,416 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:47:59,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:47:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1877994336, now seen corresponding path program 1 times [2025-02-08 07:47:59,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:47:59,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062626143] [2025-02-08 07:47:59,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:47:59,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:47:59,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:47:59,419 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:47:59,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 07:47:59,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 07:47:59,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 07:47:59,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:47:59,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:47:59,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:47:59,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:47:59,548 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:47:59,549 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:47:59,549 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:47:59,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-02-08 07:47:59,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 07:47:59,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-02-08 07:47:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:47:59,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:47:59,653 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:47:59,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062626143] [2025-02-08 07:47:59,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062626143] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:47:59,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:47:59,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:47:59,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147083077] [2025-02-08 07:47:59,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:47:59,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:47:59,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:47:59,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:47:59,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:47:59,654 INFO L87 Difference]: Start difference. First operand 1663 states and 2348 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:00,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:48:00,133 INFO L93 Difference]: Finished difference Result 2220 states and 2645 transitions. [2025-02-08 07:48:00,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:48:00,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-08 07:48:00,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:48:00,140 INFO L225 Difference]: With dead ends: 2220 [2025-02-08 07:48:00,141 INFO L226 Difference]: Without dead ends: 2220 [2025-02-08 07:48:00,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:48:00,142 INFO L435 NwaCegarLoop]: 1229 mSDtfsCounter, 971 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:48:00,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 3452 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 07:48:00,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2025-02-08 07:48:00,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 1291. [2025-02-08 07:48:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 831 states have (on average 1.9169675090252707) internal successors, (1593), 1284 states have internal predecessors, (1593), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:48:00,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1606 transitions. [2025-02-08 07:48:00,172 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1606 transitions. Word has length 12 [2025-02-08 07:48:00,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:48:00,172 INFO L471 AbstractCegarLoop]: Abstraction has 1291 states and 1606 transitions. [2025-02-08 07:48:00,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:00,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1606 transitions. [2025-02-08 07:48:00,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-08 07:48:00,175 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:48:00,176 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:48:00,185 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 [2025-02-08 07:48:00,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:00,376 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:48:00,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:48:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1210315896, now seen corresponding path program 1 times [2025-02-08 07:48:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:48:00,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143466440] [2025-02-08 07:48:00,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:48:00,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:00,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:48:00,379 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:48:00,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 07:48:00,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 07:48:00,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 07:48:00,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:48:00,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:00,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:48:00,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:00,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:48:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:00,579 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:48:00,579 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:48:00,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143466440] [2025-02-08 07:48:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143466440] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:48:00,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:48:00,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:48:00,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315181657] [2025-02-08 07:48:00,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:48:00,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:48:00,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:48:00,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:48:00,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:48:00,581 INFO L87 Difference]: Start difference. First operand 1291 states and 1606 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:02,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:48:02,682 INFO L93 Difference]: Finished difference Result 1743 states and 2160 transitions. [2025-02-08 07:48:02,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:48:02,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2025-02-08 07:48:02,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:48:02,686 INFO L225 Difference]: With dead ends: 1743 [2025-02-08 07:48:02,686 INFO L226 Difference]: Without dead ends: 1743 [2025-02-08 07:48:02,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:48:02,687 INFO L435 NwaCegarLoop]: 556 mSDtfsCounter, 1004 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:48:02,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1285 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-08 07:48:02,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2025-02-08 07:48:02,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1268. [2025-02-08 07:48:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 831 states have (on average 1.8616125150421179) internal successors, (1547), 1261 states have internal predecessors, (1547), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:48:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1560 transitions. [2025-02-08 07:48:02,708 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1560 transitions. Word has length 18 [2025-02-08 07:48:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:48:02,708 INFO L471 AbstractCegarLoop]: Abstraction has 1268 states and 1560 transitions. [2025-02-08 07:48:02,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1560 transitions. [2025-02-08 07:48:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-08 07:48:02,709 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:48:02,709 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:48:02,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 07:48:02,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:02,913 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr511REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:48:02,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:48:02,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1210315895, now seen corresponding path program 1 times [2025-02-08 07:48:02,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:48:02,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871936828] [2025-02-08 07:48:02,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:48:02,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:02,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:48:02,917 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:48:02,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 07:48:03,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 07:48:03,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 07:48:03,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:48:03,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:03,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:48:03,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:03,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:48:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:03,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:48:03,163 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:48:03,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871936828] [2025-02-08 07:48:03,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871936828] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:48:03,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:48:03,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:48:03,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786906697] [2025-02-08 07:48:03,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:48:03,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:48:03,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:48:03,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:48:03,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:48:03,164 INFO L87 Difference]: Start difference. First operand 1268 states and 1560 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:48:05,610 INFO L93 Difference]: Finished difference Result 2017 states and 2488 transitions. [2025-02-08 07:48:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:48:05,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2025-02-08 07:48:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:48:05,615 INFO L225 Difference]: With dead ends: 2017 [2025-02-08 07:48:05,615 INFO L226 Difference]: Without dead ends: 2017 [2025-02-08 07:48:05,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:48:05,615 INFO L435 NwaCegarLoop]: 1248 mSDtfsCounter, 832 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:48:05,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 2522 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-08 07:48:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2025-02-08 07:48:05,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1382. [2025-02-08 07:48:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 945 states have (on average 1.783068783068783) internal successors, (1685), 1375 states have internal predecessors, (1685), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:48:05,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1698 transitions. [2025-02-08 07:48:05,639 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1698 transitions. Word has length 18 [2025-02-08 07:48:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:48:05,639 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 1698 transitions. [2025-02-08 07:48:05,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:05,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1698 transitions. [2025-02-08 07:48:05,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-08 07:48:05,640 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:48:05,640 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:48:05,650 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 [2025-02-08 07:48:05,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:05,844 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr511REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:48:05,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:48:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1842705984, now seen corresponding path program 1 times [2025-02-08 07:48:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:48:05,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698309910] [2025-02-08 07:48:05,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:48:05,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:05,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:48:05,848 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:48:05,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 07:48:05,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-08 07:48:06,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 07:48:06,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:48:06,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:06,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:48:06,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:06,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:48:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:06,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:48:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:06,721 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:48:06,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698309910] [2025-02-08 07:48:06,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698309910] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:48:06,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:48:06,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 07:48:06,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802497624] [2025-02-08 07:48:06,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:48:06,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:48:06,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:48:06,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:48:06,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:48:06,722 INFO L87 Difference]: Start difference. First operand 1382 states and 1698 transitions. Second operand has 8 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:13,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:48:13,615 INFO L93 Difference]: Finished difference Result 2373 states and 2978 transitions. [2025-02-08 07:48:13,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 07:48:13,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 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 37 [2025-02-08 07:48:13,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:48:13,620 INFO L225 Difference]: With dead ends: 2373 [2025-02-08 07:48:13,621 INFO L226 Difference]: Without dead ends: 2373 [2025-02-08 07:48:13,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-08 07:48:13,621 INFO L435 NwaCegarLoop]: 1275 mSDtfsCounter, 1481 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 3440 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2025-02-08 07:48:13,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 4683 Invalid, 3467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3440 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2025-02-08 07:48:13,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2025-02-08 07:48:13,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 1546. [2025-02-08 07:48:13,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1109 states have (on average 1.7285843101893599) internal successors, (1917), 1539 states have internal predecessors, (1917), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:48:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 1930 transitions. [2025-02-08 07:48:13,658 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 1930 transitions. Word has length 37 [2025-02-08 07:48:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:48:13,658 INFO L471 AbstractCegarLoop]: Abstraction has 1546 states and 1930 transitions. [2025-02-08 07:48:13,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 1930 transitions. [2025-02-08 07:48:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-08 07:48:13,662 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:48:13,662 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] [2025-02-08 07:48:13,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 07:48:13,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:13,863 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:48:13,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:48:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 650393467, now seen corresponding path program 1 times [2025-02-08 07:48:13,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:48:13,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233226114] [2025-02-08 07:48:13,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:48:13,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:13,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:48:13,867 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:48:13,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 07:48:14,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-08 07:48:14,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-08 07:48:14,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:48:14,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:14,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:48:14,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:14,119 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:48:14,119 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:48:14,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233226114] [2025-02-08 07:48:14,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233226114] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:48:14,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:48:14,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:48:14,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147433853] [2025-02-08 07:48:14,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:48:14,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:48:14,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:48:14,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:48:14,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:48:14,121 INFO L87 Difference]: Start difference. First operand 1546 states and 1930 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:48:14,183 INFO L93 Difference]: Finished difference Result 1235 states and 1494 transitions. [2025-02-08 07:48:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:48:14,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2025-02-08 07:48:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:48:14,186 INFO L225 Difference]: With dead ends: 1235 [2025-02-08 07:48:14,187 INFO L226 Difference]: Without dead ends: 1235 [2025-02-08 07:48:14,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:48:14,187 INFO L435 NwaCegarLoop]: 973 mSDtfsCounter, 56 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:48:14,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2846 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:48:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2025-02-08 07:48:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1233. [2025-02-08 07:48:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 819 states have (on average 1.8058608058608059) internal successors, (1479), 1226 states have internal predecessors, (1479), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:48:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1492 transitions. [2025-02-08 07:48:14,201 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1492 transitions. Word has length 53 [2025-02-08 07:48:14,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:48:14,201 INFO L471 AbstractCegarLoop]: Abstraction has 1233 states and 1492 transitions. [2025-02-08 07:48:14,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1492 transitions. [2025-02-08 07:48:14,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-08 07:48:14,202 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:48:14,203 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] [2025-02-08 07:48:14,215 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 [2025-02-08 07:48:14,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:14,403 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:48:14,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:48:14,404 INFO L85 PathProgramCache]: Analyzing trace with hash -631003197, now seen corresponding path program 1 times [2025-02-08 07:48:14,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:48:14,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629937995] [2025-02-08 07:48:14,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:48:14,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:14,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:48:14,406 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:48:14,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 07:48:14,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-08 07:48:14,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-08 07:48:14,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:48:14,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:14,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:48:14,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:14,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:48:15,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 07:48:15,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 07:48:15,100 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:48:15,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 07:48:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:15,109 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:48:15,109 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:48:15,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629937995] [2025-02-08 07:48:15,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629937995] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:48:15,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:48:15,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:48:15,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681756843] [2025-02-08 07:48:15,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:48:15,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:48:15,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:48:15,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:48:15,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:48:15,113 INFO L87 Difference]: Start difference. First operand 1233 states and 1492 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:16,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:48:16,740 INFO L93 Difference]: Finished difference Result 1662 states and 2046 transitions. [2025-02-08 07:48:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:48:16,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2025-02-08 07:48:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:48:16,744 INFO L225 Difference]: With dead ends: 1662 [2025-02-08 07:48:16,744 INFO L226 Difference]: Without dead ends: 1662 [2025-02-08 07:48:16,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:48:16,744 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 2078 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 07:48:16,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2081 Valid, 542 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 07:48:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2025-02-08 07:48:16,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1156. [2025-02-08 07:48:16,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 780 states have (on average 1.75) internal successors, (1365), 1149 states have internal predecessors, (1365), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:48:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1378 transitions. [2025-02-08 07:48:16,759 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1378 transitions. Word has length 61 [2025-02-08 07:48:16,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:48:16,759 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1378 transitions. [2025-02-08 07:48:16,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:48:16,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1378 transitions. [2025-02-08 07:48:16,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 07:48:16,760 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:48:16,760 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] [2025-02-08 07:48:16,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 07:48:16,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:16,961 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr422REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:48:16,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:48:16,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1509123597, now seen corresponding path program 1 times [2025-02-08 07:48:16,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:48:16,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698262324] [2025-02-08 07:48:16,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:48:16,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:16,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:48:16,964 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:48:16,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 07:48:17,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-08 07:48:17,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 07:48:17,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:48:17,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:17,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:48:17,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:17,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 07:48:17,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 07:48:17,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-08 07:48:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:17,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:48:17,250 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:48:17,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698262324] [2025-02-08 07:48:17,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698262324] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:48:17,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:48:17,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:48:17,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192983507] [2025-02-08 07:48:17,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:48:17,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:48:17,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:48:17,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:48:17,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:48:17,252 INFO L87 Difference]: Start difference. First operand 1156 states and 1378 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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) [2025-02-08 07:48:18,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:48:18,800 INFO L93 Difference]: Finished difference Result 1155 states and 1377 transitions. [2025-02-08 07:48:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 07:48:18,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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 66 [2025-02-08 07:48:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:48:18,803 INFO L225 Difference]: With dead ends: 1155 [2025-02-08 07:48:18,803 INFO L226 Difference]: Without dead ends: 1155 [2025-02-08 07:48:18,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:48:18,804 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 2 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-08 07:48:18,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2491 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-08 07:48:18,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2025-02-08 07:48:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1155. [2025-02-08 07:48:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 780 states have (on average 1.7487179487179487) internal successors, (1364), 1148 states have internal predecessors, (1364), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:48:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1377 transitions. [2025-02-08 07:48:18,813 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1377 transitions. Word has length 66 [2025-02-08 07:48:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:48:18,813 INFO L471 AbstractCegarLoop]: Abstraction has 1155 states and 1377 transitions. [2025-02-08 07:48:18,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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) [2025-02-08 07:48:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1377 transitions. [2025-02-08 07:48:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 07:48:18,813 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:48:18,813 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] [2025-02-08 07:48:18,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 07:48:19,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:19,014 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr423REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:48:19,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:48:19,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1509123596, now seen corresponding path program 1 times [2025-02-08 07:48:19,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:48:19,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197306521] [2025-02-08 07:48:19,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:48:19,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:19,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:48:19,017 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:48:19,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 07:48:19,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-08 07:48:19,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 07:48:19,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:48:19,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:19,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 07:48:19,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:19,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 07:48:19,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 07:48:19,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 07:48:19,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-08 07:48:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:19,310 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:48:19,310 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:48:19,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197306521] [2025-02-08 07:48:19,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197306521] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:48:19,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:48:19,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:48:19,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109156767] [2025-02-08 07:48:19,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:48:19,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:48:19,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:48:19,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:48:19,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:48:19,311 INFO L87 Difference]: Start difference. First operand 1155 states and 1377 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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) [2025-02-08 07:48:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:48:21,090 INFO L93 Difference]: Finished difference Result 1154 states and 1376 transitions. [2025-02-08 07:48:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 07:48:21,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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 66 [2025-02-08 07:48:21,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:48:21,094 INFO L225 Difference]: With dead ends: 1154 [2025-02-08 07:48:21,094 INFO L226 Difference]: Without dead ends: 1154 [2025-02-08 07:48:21,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:48:21,094 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 1 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-08 07:48:21,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2491 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-08 07:48:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2025-02-08 07:48:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2025-02-08 07:48:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 779 states have (on average 1.7496790757381258) internal successors, (1363), 1147 states have internal predecessors, (1363), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 07:48:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1376 transitions. [2025-02-08 07:48:21,105 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1376 transitions. Word has length 66 [2025-02-08 07:48:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:48:21,105 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1376 transitions. [2025-02-08 07:48:21,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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) [2025-02-08 07:48:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1376 transitions. [2025-02-08 07:48:21,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-08 07:48:21,106 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:48:21,106 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:48:21,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 07:48:21,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:21,307 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:48:21,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:48:21,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1487555856, now seen corresponding path program 1 times [2025-02-08 07:48:21,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:48:21,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178192806] [2025-02-08 07:48:21,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:48:21,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:21,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:48:21,309 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:48:21,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 07:48:21,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-08 07:48:21,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-08 07:48:21,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:48:21,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:21,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 07:48:21,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:21,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 07:48:21,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-08 07:48:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:21,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:48:21,597 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:48:21,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178192806] [2025-02-08 07:48:21,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178192806] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:48:21,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:48:21,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 07:48:21,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055400553] [2025-02-08 07:48:21,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:48:21,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 07:48:21,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:48:21,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 07:48:21,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 07:48:21,599 INFO L87 Difference]: Start difference. First operand 1154 states and 1376 transitions. Second operand has 7 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 07:48:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:48:23,382 INFO L93 Difference]: Finished difference Result 1166 states and 1391 transitions. [2025-02-08 07:48:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 07:48:23,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 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 74 [2025-02-08 07:48:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:48:23,387 INFO L225 Difference]: With dead ends: 1166 [2025-02-08 07:48:23,388 INFO L226 Difference]: Without dead ends: 1166 [2025-02-08 07:48:23,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-08 07:48:23,388 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 11 mSDsluCounter, 2558 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3490 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-08 07:48:23,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3490 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-08 07:48:23,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2025-02-08 07:48:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1160. [2025-02-08 07:48:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 784 states have (on average 1.7474489795918366) internal successors, (1370), 1152 states have internal predecessors, (1370), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 07:48:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1386 transitions. [2025-02-08 07:48:23,411 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1386 transitions. Word has length 74 [2025-02-08 07:48:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:48:23,412 INFO L471 AbstractCegarLoop]: Abstraction has 1160 states and 1386 transitions. [2025-02-08 07:48:23,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 07:48:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1386 transitions. [2025-02-08 07:48:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-08 07:48:23,413 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:48:23,413 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:48:23,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 07:48:23,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:23,618 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:48:23,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:48:23,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1487555857, now seen corresponding path program 1 times [2025-02-08 07:48:23,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:48:23,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452804523] [2025-02-08 07:48:23,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:48:23,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:23,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:48:23,621 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:48:23,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 07:48:23,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-08 07:48:23,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-08 07:48:23,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:48:23,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:23,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:48:23,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:23,868 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:48:23,868 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:48:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452804523] [2025-02-08 07:48:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452804523] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:48:23,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:48:23,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:48:23,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356139622] [2025-02-08 07:48:23,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:48:23,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:48:23,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:48:23,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:48:23,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:48:23,869 INFO L87 Difference]: Start difference. First operand 1160 states and 1386 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 07:48:23,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:48:23,894 INFO L93 Difference]: Finished difference Result 1157 states and 1380 transitions. [2025-02-08 07:48:23,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:48:23,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 74 [2025-02-08 07:48:23,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:48:23,898 INFO L225 Difference]: With dead ends: 1157 [2025-02-08 07:48:23,899 INFO L226 Difference]: Without dead ends: 1157 [2025-02-08 07:48:23,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:48:23,900 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 0 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2830 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 [2025-02-08 07:48:23,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2830 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:48:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2025-02-08 07:48:23,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2025-02-08 07:48:23,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 781 states have (on average 1.7490396927016645) internal successors, (1366), 1150 states have internal predecessors, (1366), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 07:48:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1380 transitions. [2025-02-08 07:48:23,918 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1380 transitions. Word has length 74 [2025-02-08 07:48:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:48:23,918 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 1380 transitions. [2025-02-08 07:48:23,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 07:48:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1380 transitions. [2025-02-08 07:48:23,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-08 07:48:23,919 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:48:23,919 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:48:23,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 07:48:24,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:24,120 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:48:24,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:48:24,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1055151151, now seen corresponding path program 1 times [2025-02-08 07:48:24,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:48:24,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185782185] [2025-02-08 07:48:24,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:48:24,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:24,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:48:24,123 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:48:24,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 07:48:24,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-08 07:48:24,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-08 07:48:24,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:48:24,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:24,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:48:24,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:24,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:48:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:24,425 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:48:24,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185782185] [2025-02-08 07:48:24,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185782185] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:48:24,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:48:24,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-08 07:48:24,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159753187] [2025-02-08 07:48:24,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:48:24,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:48:24,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:48:24,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:48:24,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:48:24,426 INFO L87 Difference]: Start difference. First operand 1157 states and 1380 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 07:48:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:48:24,544 INFO L93 Difference]: Finished difference Result 1169 states and 1397 transitions. [2025-02-08 07:48:24,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 07:48:24,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 75 [2025-02-08 07:48:24,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:48:24,549 INFO L225 Difference]: With dead ends: 1169 [2025-02-08 07:48:24,550 INFO L226 Difference]: Without dead ends: 1169 [2025-02-08 07:48:24,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-08 07:48:24,550 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 5 mSDsluCounter, 4706 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5651 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:48:24,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5651 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:48:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2025-02-08 07:48:24,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1167. [2025-02-08 07:48:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 790 states have (on average 1.7481012658227848) internal successors, (1381), 1159 states have internal predecessors, (1381), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 07:48:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1395 transitions. [2025-02-08 07:48:24,567 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1395 transitions. Word has length 75 [2025-02-08 07:48:24,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:48:24,568 INFO L471 AbstractCegarLoop]: Abstraction has 1167 states and 1395 transitions. [2025-02-08 07:48:24,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 07:48:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1395 transitions. [2025-02-08 07:48:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-08 07:48:24,570 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:48:24,570 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:48:24,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 07:48:24,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:24,771 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-08 07:48:24,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:48:24,771 INFO L85 PathProgramCache]: Analyzing trace with hash 444767440, now seen corresponding path program 2 times [2025-02-08 07:48:24,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:48:24,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755377557] [2025-02-08 07:48:24,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 07:48:24,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:48:24,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:48:24,774 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:48:24,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 07:48:24,931 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 78 statements into 2 equivalence classes. [2025-02-08 07:48:56,361 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 78 of 78 statements. [2025-02-08 07:48:56,362 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 07:48:56,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:56,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 07:48:56,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:56,465 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:48:56,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 07:48:56,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 07:48:56,619 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 07:48:56,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-08 07:48:56,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-02-08 07:48:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 07:48:56,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:48:56,743 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-08 07:48:56,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-02-08 07:48:56,771 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:48:56,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755377557] [2025-02-08 07:48:56,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755377557] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 07:48:56,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [480092733] [2025-02-08 07:48:56,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 07:48:56,771 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 07:48:56,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 07:48:56,793 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 07:48:56,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2025-02-08 07:48:57,015 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 78 statements into 2 equivalence classes. [2025-02-08 07:48:57,785 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 78 of 78 statements. [2025-02-08 07:48:57,785 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 07:48:57,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:48:57,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:48:57,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:48:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:57,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:48:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:48:58,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [480092733] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:48:58,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 07:48:58,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-02-08 07:48:58,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681270429] [2025-02-08 07:48:58,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 07:48:58,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 07:48:58,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:48:58,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 07:48:58,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=505, Unknown=6, NotChecked=0, Total=600 [2025-02-08 07:48:58,078 INFO L87 Difference]: Start difference. First operand 1167 states and 1395 transitions. Second operand has 23 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 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)