./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.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_JEN_test10-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:54:24,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:54:24,135 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 07:54:24,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:54:24,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:54:24,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:54:24,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:54:24,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:54:24,166 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:54:24,166 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:54:24,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:54:24,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:54:24,167 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:54:24,167 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:54:24,167 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:54:24,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:54:24,168 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:54:24,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:54:24,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:54:24,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:54:24,168 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:54:24,168 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:54:24,168 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:54:24,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:54:24,168 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:54:24,168 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:54:24,169 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:54:24,169 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:54:24,169 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:54:24,169 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:54:24,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:54:24,169 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:54:24,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:54:24,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:54:24,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:54:24,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:54:24,170 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 07:54:24,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 07:54:24,170 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:54:24,170 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:54:24,170 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:54:24,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:54:24,170 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 -> 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e [2025-02-08 07:54:24,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:54:24,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:54:24,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:54:24,394 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:54:24,394 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:54:24,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2025-02-08 07:54:25,540 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4ffdeb0a7/24b6b2a0e57f424d83a8c83707302794/FLAG6f5a17ce7 [2025-02-08 07:54:25,863 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:54:25,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2025-02-08 07:54:25,877 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4ffdeb0a7/24b6b2a0e57f424d83a8c83707302794/FLAG6f5a17ce7 [2025-02-08 07:54:26,114 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4ffdeb0a7/24b6b2a0e57f424d83a8c83707302794 [2025-02-08 07:54:26,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:54:26,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:54:26,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:26,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:54:26,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:54:26,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:26" (1/1) ... [2025-02-08 07:54:26,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f1b4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:26, skipping insertion in model container [2025-02-08 07:54:26,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:26" (1/1) ... [2025-02-08 07:54:26,163 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:54:26,445 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:26,469 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:26,472 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:26,475 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 07:54:26,479 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 07:54:26,501 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 07:54:26,505 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 07:54:26,510 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 07:54:26,518 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:26,539 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 07:54:26,539 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 07:54:26,541 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 07:54:26,541 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 07:54:26,553 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 07:54:26,553 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 07:54:26,555 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 07:54:26,555 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 07:54:26,564 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:26,565 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 07:54:26,566 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:26,566 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:54:26,576 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 07:54:26,577 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 07:54:26,580 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 07:54:26,580 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 07:54:26,581 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 07:54:26,582 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 07:54:26,583 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 07:54:26,587 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 07:54:26,587 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 07:54:26,591 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 07:54:26,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:26,617 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 07:54:26,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1907603a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:26, skipping insertion in model container [2025-02-08 07:54:26,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:26,617 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-08 07:54:26,620 INFO L158 Benchmark]: Toolchain (without parser) took 500.42ms. Allocated memory is still 201.3MB. Free memory was 154.0MB in the beginning and 124.7MB in the end (delta: 29.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 07:54:26,621 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 201.3MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 07:54:26,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.67ms. Allocated memory is still 201.3MB. Free memory was 153.6MB in the beginning and 124.7MB in the end (delta: 29.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 07:54:26,625 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 201.3MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.67ms. Allocated memory is still 201.3MB. Free memory was 153.6MB in the beginning and 124.7MB in the end (delta: 29.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 757]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:54:28,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:54:28,403 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 07:54:28,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:54:28,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:54:28,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:54:28,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:54:28,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:54:28,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:54:28,434 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:54:28,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:54:28,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:54:28,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:54:28,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:54:28,435 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:54:28,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:54:28,436 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:54:28,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:54:28,436 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:54:28,436 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:54:28,436 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:54:28,436 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:54:28,437 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:54:28,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:54:28,437 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:54:28,437 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 07:54:28,437 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 07:54:28,437 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:54:28,437 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:54:28,437 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:54:28,437 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:54:28,438 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:54:28,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:54:28,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:54:28,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:54:28,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:54:28,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:54:28,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:54:28,438 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 07:54:28,438 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 07:54:28,439 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:54:28,439 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:54:28,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:54:28,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:54:28,439 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 -> 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e [2025-02-08 07:54:28,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:54:28,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:54:28,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:54:28,687 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:54:28,687 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:54:28,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2025-02-08 07:54:29,859 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bfd2ba1ce/a4d0840c29634076bb9800d45542d601/FLAG848774708 [2025-02-08 07:54:30,155 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:54:30,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2025-02-08 07:54:30,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bfd2ba1ce/a4d0840c29634076bb9800d45542d601/FLAG848774708 [2025-02-08 07:54:30,437 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bfd2ba1ce/a4d0840c29634076bb9800d45542d601 [2025-02-08 07:54:30,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:54:30,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:54:30,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:30,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:54:30,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:54:30,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:30" (1/1) ... [2025-02-08 07:54:30,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ffc7004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:30, skipping insertion in model container [2025-02-08 07:54:30,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:54:30" (1/1) ... [2025-02-08 07:54:30,483 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:54:30,764 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 07:54:30,793 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 07:54:30,799 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 07:54:30,807 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 07:54:30,812 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 07:54:30,833 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 07:54:30,835 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 07:54:30,837 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 07:54:30,841 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 07:54:30,867 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 07:54:30,868 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 07:54:30,870 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 07:54:30,870 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 07:54:30,886 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 07:54:30,887 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 07:54:30,888 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 07:54:30,888 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 07:54:30,905 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 07:54:30,905 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 07:54:30,907 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 07:54:30,907 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 07:54:30,922 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 07:54:30,922 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 07:54:30,923 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 07:54:30,925 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 07:54:30,926 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 07:54:30,928 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 07:54:30,932 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 07:54:30,932 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 07:54:30,933 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 07:54:30,935 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 07:54:30,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:30,956 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-08 07:54:30,965 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:54:30,995 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 07:54:31,008 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 07:54:31,010 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 07:54:31,012 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 07:54:31,014 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 07:54:31,029 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 07:54:31,030 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 07:54:31,031 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 07:54:31,036 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 07:54:31,051 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 07:54:31,052 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 07:54:31,054 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 07:54:31,055 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 07:54:31,062 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 07:54:31,064 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 07:54:31,065 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 07:54:31,066 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 07:54:31,073 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 07:54:31,076 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 07:54:31,077 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 07:54:31,077 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 07:54:31,086 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 07:54:31,086 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 07:54:31,088 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 07:54:31,088 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 07:54:31,092 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 07:54:31,093 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 07:54:31,094 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 07:54:31,094 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 07:54:31,094 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 07:54:31,098 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 07:54:31,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:31,104 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 07:54:31,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:54:31,242 INFO L204 MainTranslator]: Completed translation [2025-02-08 07:54:31,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31 WrapperNode [2025-02-08 07:54:31,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:54:31,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 07:54:31,243 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 07:54:31,243 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 07:54:31,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,349 INFO L138 Inliner]: procedures = 180, calls = 558, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2327 [2025-02-08 07:54:31,350 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 07:54:31,350 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 07:54:31,350 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 07:54:31,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 07:54:31,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,370 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,504 INFO L175 MemorySlicer]: Split 528 memory accesses to 3 slices as follows [2, 420, 106]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 94 writes are split as follows [0, 90, 4]. [2025-02-08 07:54:31,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,563 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 07:54:31,586 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 07:54:31,586 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 07:54:31,587 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 07:54:31,587 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (1/1) ... [2025-02-08 07:54:31,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:54:31,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:31,612 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 07:54:31,617 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 07:54:31,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 07:54:31,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 07:54:31,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-08 07:54:31,633 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-02-08 07:54:31,633 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-02-08 07:54:31,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 07:54:31,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 07:54:31,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 07:54:31,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 07:54:31,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-08 07:54:31,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 07:54:31,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 07:54:31,871 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 07:54:31,873 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 07:54:37,157 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: 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 07:54:37,369 INFO L? ?]: Removed 2230 outVars from TransFormulas that were not future-live. [2025-02-08 07:54:37,369 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 07:54:37,415 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 07:54:37,416 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 07:54:37,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:54:37 BoogieIcfgContainer [2025-02-08 07:54:37,416 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 07:54:37,418 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 07:54:37,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 07:54:37,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 07:54:37,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 07:54:30" (1/3) ... [2025-02-08 07:54:37,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9bf179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:54:37, skipping insertion in model container [2025-02-08 07:54:37,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:54:31" (2/3) ... [2025-02-08 07:54:37,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9bf179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:54:37, skipping insertion in model container [2025-02-08 07:54:37,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:54:37" (3/3) ... [2025-02-08 07:54:37,426 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-2.i [2025-02-08 07:54:37,436 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 07:54:37,438 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test10-2.i that has 6 procedures, 2308 locations, 1 initial locations, 89 loop locations, and 1091 error locations. [2025-02-08 07:54:37,510 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 07:54:37,517 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;@2e513512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 07:54:37,518 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1091 error locations. [2025-02-08 07:54:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 2298 states, 1194 states have (on average 2.1566164154103853) internal successors, (2575), 2283 states have internal predecessors, (2575), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-02-08 07:54:37,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-02-08 07:54:37,527 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:37,528 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-02-08 07:54:37,528 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1088REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:54:37,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:37,531 INFO L85 PathProgramCache]: Analyzing trace with hash 84287, now seen corresponding path program 1 times [2025-02-08 07:54:37,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:37,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798942163] [2025-02-08 07:54:37,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:37,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:37,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:37,541 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 07:54:37,546 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 07:54:37,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 07:54:37,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 07:54:37,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:37,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:37,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:54:37,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:37,775 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 07:54:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:54:37,806 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:37,807 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:37,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798942163] [2025-02-08 07:54:37,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798942163] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:37,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:37,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:54:37,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841527393] [2025-02-08 07:54:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:37,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:54:37,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:37,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:54:37,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:37,837 INFO L87 Difference]: Start difference. First operand has 2298 states, 1194 states have (on average 2.1566164154103853) internal successors, (2575), 2283 states have internal predecessors, (2575), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) 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 07:54:40,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:40,556 INFO L93 Difference]: Finished difference Result 2968 states and 3151 transitions. [2025-02-08 07:54:40,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:54:40,558 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 07:54:40,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:40,575 INFO L225 Difference]: With dead ends: 2968 [2025-02-08 07:54:40,575 INFO L226 Difference]: Without dead ends: 2963 [2025-02-08 07:54:40,576 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 07:54:40,578 INFO L435 NwaCegarLoop]: 1421 mSDtfsCounter, 2165 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:40,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2175 Valid, 1904 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-08 07:54:40,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2025-02-08 07:54:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2442. [2025-02-08 07:54:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 1368 states have (on average 2.0051169590643276) internal successors, (2743), 2426 states have internal predecessors, (2743), 16 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 07:54:40,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 2771 transitions. [2025-02-08 07:54:40,687 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 2771 transitions. Word has length 2 [2025-02-08 07:54:40,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:40,687 INFO L471 AbstractCegarLoop]: Abstraction has 2442 states and 2771 transitions. [2025-02-08 07:54:40,687 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 07:54:40,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 2771 transitions. [2025-02-08 07:54:40,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-02-08 07:54:40,688 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:40,688 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-02-08 07:54:40,697 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 07:54:40,893 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 07:54:40,893 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:54:40,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:40,893 INFO L85 PathProgramCache]: Analyzing trace with hash 84288, now seen corresponding path program 1 times [2025-02-08 07:54:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:40,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931131146] [2025-02-08 07:54:40,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:40,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:40,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:40,896 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 07:54:40,898 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 07:54:41,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 07:54:41,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 07:54:41,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:41,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:41,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:54:41,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:41,083 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 07:54:41,095 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 07:54:41,095 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:41,095 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931131146] [2025-02-08 07:54:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931131146] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:41,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:41,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:54:41,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344731451] [2025-02-08 07:54:41,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:41,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:54:41,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:41,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:54:41,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:41,096 INFO L87 Difference]: Start difference. First operand 2442 states and 2771 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 07:54:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:44,554 INFO L93 Difference]: Finished difference Result 3256 states and 3665 transitions. [2025-02-08 07:54:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:54:44,554 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 07:54:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:44,562 INFO L225 Difference]: With dead ends: 3256 [2025-02-08 07:54:44,562 INFO L226 Difference]: Without dead ends: 3256 [2025-02-08 07:54:44,562 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 07:54:44,563 INFO L435 NwaCegarLoop]: 2053 mSDtfsCounter, 888 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:44,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 3376 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-02-08 07:54:44,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2025-02-08 07:54:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 2928. [2025-02-08 07:54:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 1852 states have (on average 1.9605831533477323) internal successors, (3631), 2909 states have internal predecessors, (3631), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:54:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 3665 transitions. [2025-02-08 07:54:44,621 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 3665 transitions. Word has length 2 [2025-02-08 07:54:44,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:44,622 INFO L471 AbstractCegarLoop]: Abstraction has 2928 states and 3665 transitions. [2025-02-08 07:54:44,623 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 07:54:44,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 3665 transitions. [2025-02-08 07:54:44,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 07:54:44,623 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:44,623 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:54:44,630 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 07:54:44,826 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 07:54:44,826 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1085REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:54:44,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1745146054, now seen corresponding path program 1 times [2025-02-08 07:54:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:44,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437919270] [2025-02-08 07:54:44,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:44,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:44,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:44,830 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 07:54:44,830 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 07:54:44,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 07:54:44,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 07:54:44,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:44,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:44,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:54:44,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:44,961 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 07:54:45,012 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-02-08 07:54:45,012 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 07:54:45,074 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 07:54:45,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:45,075 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:45,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437919270] [2025-02-08 07:54:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437919270] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:45,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:45,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:54:45,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752519726] [2025-02-08 07:54:45,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:45,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:54:45,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:45,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:54:45,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:54:45,076 INFO L87 Difference]: Start difference. First operand 2928 states and 3665 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 07:54:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:50,888 INFO L93 Difference]: Finished difference Result 4633 states and 5155 transitions. [2025-02-08 07:54:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:54:50,889 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 07:54:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:50,898 INFO L225 Difference]: With dead ends: 4633 [2025-02-08 07:54:50,898 INFO L226 Difference]: Without dead ends: 4633 [2025-02-08 07:54:50,899 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 07:54:50,899 INFO L435 NwaCegarLoop]: 2334 mSDtfsCounter, 2362 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 3134 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 4974 SdHoareTripleChecker+Invalid, 3151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:50,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2368 Valid, 4974 Invalid, 3151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3134 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2025-02-08 07:54:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2025-02-08 07:54:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 3220. [2025-02-08 07:54:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3220 states, 2144 states have (on average 1.9570895522388059) internal successors, (4196), 3201 states have internal predecessors, (4196), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:54:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 4230 transitions. [2025-02-08 07:54:50,946 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 4230 transitions. Word has length 7 [2025-02-08 07:54:50,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:50,946 INFO L471 AbstractCegarLoop]: Abstraction has 3220 states and 4230 transitions. [2025-02-08 07:54:50,946 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 07:54:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 4230 transitions. [2025-02-08 07:54:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 07:54:50,946 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:50,946 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:54:50,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 07:54:51,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:51,147 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1082REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:54:51,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1735044651, now seen corresponding path program 1 times [2025-02-08 07:54:51,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:51,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381387835] [2025-02-08 07:54:51,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:51,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:51,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:51,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:54:51,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 07:54:51,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 07:54:51,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 07:54:51,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:51,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:51,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:54:51,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:51,305 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 07:54:51,314 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 07:54:51,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:51,315 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:51,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381387835] [2025-02-08 07:54:51,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381387835] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:51,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:51,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:54:51,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211019499] [2025-02-08 07:54:51,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:51,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:54:51,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:51,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:54:51,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:51,315 INFO L87 Difference]: Start difference. First operand 3220 states and 4230 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 07:54:53,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:53,847 INFO L93 Difference]: Finished difference Result 3945 states and 4994 transitions. [2025-02-08 07:54:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:54:53,848 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 07:54:53,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:53,856 INFO L225 Difference]: With dead ends: 3945 [2025-02-08 07:54:53,856 INFO L226 Difference]: Without dead ends: 3945 [2025-02-08 07:54:53,856 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 07:54:53,856 INFO L435 NwaCegarLoop]: 2252 mSDtfsCounter, 1941 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:53,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 2937 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-08 07:54:53,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2025-02-08 07:54:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 3128. [2025-02-08 07:54:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 2144 states have (on average 1.8945895522388059) internal successors, (4062), 3109 states have internal predecessors, (4062), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:54:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4096 transitions. [2025-02-08 07:54:53,904 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4096 transitions. Word has length 8 [2025-02-08 07:54:53,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:53,905 INFO L471 AbstractCegarLoop]: Abstraction has 3128 states and 4096 transitions. [2025-02-08 07:54:53,905 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 07:54:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4096 transitions. [2025-02-08 07:54:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 07:54:53,905 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:53,905 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:54:53,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 07:54:54,106 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 07:54:54,106 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1083REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:54:54,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1735044650, now seen corresponding path program 1 times [2025-02-08 07:54:54,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:54,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364284417] [2025-02-08 07:54:54,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:54,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:54,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:54,109 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 07:54:54,110 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 07:54:54,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 07:54:54,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 07:54:54,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:54,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:54,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:54:54,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:54,263 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 07:54:54,278 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 07:54:54,278 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:54,278 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364284417] [2025-02-08 07:54:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364284417] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:54,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:54,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:54:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459941155] [2025-02-08 07:54:54,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:54,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:54:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:54,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:54:54,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:54:54,279 INFO L87 Difference]: Start difference. First operand 3128 states and 4096 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 07:54:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:54:57,717 INFO L93 Difference]: Finished difference Result 4771 states and 6227 transitions. [2025-02-08 07:54:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:54:57,717 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 07:54:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:54:57,727 INFO L225 Difference]: With dead ends: 4771 [2025-02-08 07:54:57,727 INFO L226 Difference]: Without dead ends: 4771 [2025-02-08 07:54:57,727 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 07:54:57,727 INFO L435 NwaCegarLoop]: 2604 mSDtfsCounter, 1442 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:54:57,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 3726 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-02-08 07:54:57,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2025-02-08 07:54:57,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 3300. [2025-02-08 07:54:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 2326 states have (on average 1.8774720550300945) internal successors, (4367), 3281 states have internal predecessors, (4367), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:54:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4401 transitions. [2025-02-08 07:54:57,791 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4401 transitions. Word has length 8 [2025-02-08 07:54:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:54:57,791 INFO L471 AbstractCegarLoop]: Abstraction has 3300 states and 4401 transitions. [2025-02-08 07:54:57,792 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 07:54:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4401 transitions. [2025-02-08 07:54:57,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 07:54:57,792 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:54:57,792 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:54:57,803 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 07:54:57,992 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 07:54:57,993 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr450REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:54:57,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:54:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash -476445407, now seen corresponding path program 1 times [2025-02-08 07:54:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:54:57,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031583198] [2025-02-08 07:54:57,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:54:57,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:54:57,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:54:57,998 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 07:54:58,000 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 07:54:58,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 07:54:58,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 07:54:58,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:54:58,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:54:58,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:54:58,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:54:58,136 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 07:54:58,171 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 07:54:58,171 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:54:58,171 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:54:58,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031583198] [2025-02-08 07:54:58,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031583198] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:54:58,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:54:58,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:54:58,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894959632] [2025-02-08 07:54:58,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:54:58,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:54:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:54:58,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:54:58,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:54:58,172 INFO L87 Difference]: Start difference. First operand 3300 states and 4401 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 07:55:01,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:01,112 INFO L93 Difference]: Finished difference Result 3769 states and 4720 transitions. [2025-02-08 07:55:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:01,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2025-02-08 07:55:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:01,120 INFO L225 Difference]: With dead ends: 3769 [2025-02-08 07:55:01,120 INFO L226 Difference]: Without dead ends: 3769 [2025-02-08 07:55:01,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 07:55:01,121 INFO L435 NwaCegarLoop]: 1363 mSDtfsCounter, 2126 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:01,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2136 Valid, 3056 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-02-08 07:55:01,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2025-02-08 07:55:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3277. [2025-02-08 07:55:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 2326 states have (on average 1.857695614789338) internal successors, (4321), 3258 states have internal predecessors, (4321), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:55:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 4355 transitions. [2025-02-08 07:55:01,156 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 4355 transitions. Word has length 11 [2025-02-08 07:55:01,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:01,156 INFO L471 AbstractCegarLoop]: Abstraction has 3277 states and 4355 transitions. [2025-02-08 07:55:01,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 07:55:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 4355 transitions. [2025-02-08 07:55:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 07:55:01,157 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:01,157 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:01,164 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 07:55:01,357 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 07:55:01,357 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr451REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:01,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:01,358 INFO L85 PathProgramCache]: Analyzing trace with hash -476445406, now seen corresponding path program 1 times [2025-02-08 07:55:01,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:01,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337804594] [2025-02-08 07:55:01,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:01,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:01,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:01,360 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 07:55:01,362 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 07:55:01,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 07:55:01,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 07:55:01,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:01,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:01,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:55:01,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:01,504 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 07:55:01,553 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 07:55:01,554 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:01,554 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:01,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337804594] [2025-02-08 07:55:01,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337804594] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:01,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:01,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:55:01,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829272699] [2025-02-08 07:55:01,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:01,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:01,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:01,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:01,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:01,555 INFO L87 Difference]: Start difference. First operand 3277 states and 4355 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 07:55:05,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:05,388 INFO L93 Difference]: Finished difference Result 4039 states and 5189 transitions. [2025-02-08 07:55:05,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:05,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2025-02-08 07:55:05,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:05,402 INFO L225 Difference]: With dead ends: 4039 [2025-02-08 07:55:05,402 INFO L226 Difference]: Without dead ends: 4039 [2025-02-08 07:55:05,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 07:55:05,403 INFO L435 NwaCegarLoop]: 1958 mSDtfsCounter, 867 mSDsluCounter, 2413 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 4371 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:05,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 4371 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-02-08 07:55:05,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4039 states. [2025-02-08 07:55:05,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4039 to 3326. [2025-02-08 07:55:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 2375 states have (on average 1.8454736842105264) internal successors, (4383), 3307 states have internal predecessors, (4383), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:55:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4417 transitions. [2025-02-08 07:55:05,436 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4417 transitions. Word has length 11 [2025-02-08 07:55:05,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:05,436 INFO L471 AbstractCegarLoop]: Abstraction has 3326 states and 4417 transitions. [2025-02-08 07:55:05,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 07:55:05,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4417 transitions. [2025-02-08 07:55:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 07:55:05,437 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:05,437 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:05,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 07:55:05,637 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 07:55:05,638 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:05,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:05,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1884949167, now seen corresponding path program 1 times [2025-02-08 07:55:05,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:05,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576139886] [2025-02-08 07:55:05,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:05,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:05,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:05,641 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 07:55:05,642 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 07:55:05,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 07:55:05,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 07:55:05,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:05,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:05,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:05,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:05,798 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 07:55:05,798 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:05,798 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:05,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576139886] [2025-02-08 07:55:05,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576139886] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:05,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:05,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:55:05,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903787967] [2025-02-08 07:55:05,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:05,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:05,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:05,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:05,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:05,799 INFO L87 Difference]: Start difference. First operand 3326 states and 4417 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 07:55:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:05,887 INFO L93 Difference]: Finished difference Result 3248 states and 4296 transitions. [2025-02-08 07:55:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:55:05,888 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 07:55:05,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:05,899 INFO L225 Difference]: With dead ends: 3248 [2025-02-08 07:55:05,899 INFO L226 Difference]: Without dead ends: 3248 [2025-02-08 07:55:05,899 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 07:55:05,900 INFO L435 NwaCegarLoop]: 2197 mSDtfsCounter, 45 mSDsluCounter, 4371 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6568 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:05,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6568 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:55:05,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2025-02-08 07:55:05,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 3242. [2025-02-08 07:55:05,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3242 states, 2310 states have (on average 1.8424242424242425) internal successors, (4256), 3223 states have internal predecessors, (4256), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:55:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 4290 transitions. [2025-02-08 07:55:05,939 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 4290 transitions. Word has length 12 [2025-02-08 07:55:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:05,939 INFO L471 AbstractCegarLoop]: Abstraction has 3242 states and 4290 transitions. [2025-02-08 07:55:05,939 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 07:55:05,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 4290 transitions. [2025-02-08 07:55:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:55:05,940 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:05,940 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] [2025-02-08 07:55:05,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 07:55:06,140 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 07:55:06,141 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1073REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:06,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:06,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1037688454, now seen corresponding path program 1 times [2025-02-08 07:55:06,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:06,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032057954] [2025-02-08 07:55:06,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:06,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:06,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:06,143 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 07:55:06,144 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 07:55:06,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:55:06,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:55:06,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:06,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:06,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:55:06,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:06,306 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 07:55:06,392 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 07:55:06,392 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:06,392 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:06,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032057954] [2025-02-08 07:55:06,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032057954] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:06,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:06,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:55:06,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871069179] [2025-02-08 07:55:06,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:06,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:06,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:06,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:06,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:06,393 INFO L87 Difference]: Start difference. First operand 3242 states and 4290 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:55:10,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:10,517 INFO L93 Difference]: Finished difference Result 4713 states and 6119 transitions. [2025-02-08 07:55:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:10,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:55:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:10,523 INFO L225 Difference]: With dead ends: 4713 [2025-02-08 07:55:10,523 INFO L226 Difference]: Without dead ends: 4713 [2025-02-08 07:55:10,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:55:10,523 INFO L435 NwaCegarLoop]: 2457 mSDtfsCounter, 1523 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 5213 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:10,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 5213 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-02-08 07:55:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2025-02-08 07:55:10,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 3356. [2025-02-08 07:55:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3356 states, 2424 states have (on average 1.8316831683168318) internal successors, (4440), 3337 states have internal predecessors, (4440), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:55:10,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4474 transitions. [2025-02-08 07:55:10,556 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4474 transitions. Word has length 20 [2025-02-08 07:55:10,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:10,556 INFO L471 AbstractCegarLoop]: Abstraction has 3356 states and 4474 transitions. [2025-02-08 07:55:10,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:55:10,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4474 transitions. [2025-02-08 07:55:10,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:55:10,557 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:10,557 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] [2025-02-08 07:55:10,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 07:55:10,757 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 07:55:10,757 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1072REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:10,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:10,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1037688453, now seen corresponding path program 1 times [2025-02-08 07:55:10,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:10,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62995213] [2025-02-08 07:55:10,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:10,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:10,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:10,760 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 07:55:10,761 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 07:55:10,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:55:10,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:55:10,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:10,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:10,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:10,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:10,940 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 07:55:10,940 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:10,940 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:10,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62995213] [2025-02-08 07:55:10,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62995213] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:10,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:10,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:55:10,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841368244] [2025-02-08 07:55:10,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:10,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:10,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:10,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:10,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:10,941 INFO L87 Difference]: Start difference. First operand 3356 states and 4474 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:55:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:13,870 INFO L93 Difference]: Finished difference Result 4050 states and 5167 transitions. [2025-02-08 07:55:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:13,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:55:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:13,876 INFO L225 Difference]: With dead ends: 4050 [2025-02-08 07:55:13,877 INFO L226 Difference]: Without dead ends: 4050 [2025-02-08 07:55:13,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:55:13,877 INFO L435 NwaCegarLoop]: 2102 mSDtfsCounter, 1905 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:13,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 4366 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-02-08 07:55:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2025-02-08 07:55:13,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 3333. [2025-02-08 07:55:13,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 2424 states have (on average 1.7937293729372936) internal successors, (4348), 3314 states have internal predecessors, (4348), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:55:13,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 4382 transitions. [2025-02-08 07:55:13,923 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 4382 transitions. Word has length 20 [2025-02-08 07:55:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:13,923 INFO L471 AbstractCegarLoop]: Abstraction has 3333 states and 4382 transitions. [2025-02-08 07:55:13,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:55:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 4382 transitions. [2025-02-08 07:55:13,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:55:13,924 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:13,924 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] [2025-02-08 07:55:13,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 07:55:14,124 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 07:55:14,124 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr764REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:14,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:14,125 INFO L85 PathProgramCache]: Analyzing trace with hash 446019354, now seen corresponding path program 1 times [2025-02-08 07:55:14,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:14,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627061299] [2025-02-08 07:55:14,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:14,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:14,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:14,127 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 07:55:14,127 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 07:55:14,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:55:14,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:55:14,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:14,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:14,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:14,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:14,315 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 07:55:14,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:14,315 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:14,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627061299] [2025-02-08 07:55:14,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627061299] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:14,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:14,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:55:14,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102488171] [2025-02-08 07:55:14,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:14,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:14,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:14,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:14,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:14,317 INFO L87 Difference]: Start difference. First operand 3333 states and 4382 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:55:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:17,210 INFO L93 Difference]: Finished difference Result 4035 states and 5083 transitions. [2025-02-08 07:55:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:17,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:55:17,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:17,219 INFO L225 Difference]: With dead ends: 4035 [2025-02-08 07:55:17,219 INFO L226 Difference]: Without dead ends: 4035 [2025-02-08 07:55:17,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:55:17,220 INFO L435 NwaCegarLoop]: 2102 mSDtfsCounter, 1882 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:17,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 4366 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-02-08 07:55:17,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2025-02-08 07:55:17,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 3310. [2025-02-08 07:55:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3310 states, 2424 states have (on average 1.7557755775577557) internal successors, (4256), 3291 states have internal predecessors, (4256), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:55:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 4290 transitions. [2025-02-08 07:55:17,252 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 4290 transitions. Word has length 20 [2025-02-08 07:55:17,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:17,253 INFO L471 AbstractCegarLoop]: Abstraction has 3310 states and 4290 transitions. [2025-02-08 07:55:17,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:55:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 4290 transitions. [2025-02-08 07:55:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 07:55:17,254 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:17,254 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] [2025-02-08 07:55:17,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 07:55:17,469 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 07:55:17,469 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr765REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:17,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:17,469 INFO L85 PathProgramCache]: Analyzing trace with hash 446019355, now seen corresponding path program 1 times [2025-02-08 07:55:17,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:17,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929744654] [2025-02-08 07:55:17,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:17,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:17,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:17,472 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 07:55:17,475 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 07:55:17,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 07:55:17,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 07:55:17,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:17,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:17,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:55:17,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:17,642 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 07:55:17,726 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 07:55:17,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:17,727 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:17,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929744654] [2025-02-08 07:55:17,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929744654] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:17,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:17,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:55:17,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648802200] [2025-02-08 07:55:17,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:17,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:17,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:17,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:17,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:17,727 INFO L87 Difference]: Start difference. First operand 3310 states and 4290 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:55:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:21,970 INFO L93 Difference]: Finished difference Result 4758 states and 6073 transitions. [2025-02-08 07:55:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:21,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 07:55:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:21,977 INFO L225 Difference]: With dead ends: 4758 [2025-02-08 07:55:21,979 INFO L226 Difference]: Without dead ends: 4758 [2025-02-08 07:55:21,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:55:21,980 INFO L435 NwaCegarLoop]: 2429 mSDtfsCounter, 1454 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 5139 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:21,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 5139 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2025-02-08 07:55:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2025-02-08 07:55:22,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 3424. [2025-02-08 07:55:22,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 2538 states have (on average 1.731284475965327) internal successors, (4394), 3405 states have internal predecessors, (4394), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:55:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 4428 transitions. [2025-02-08 07:55:22,026 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 4428 transitions. Word has length 20 [2025-02-08 07:55:22,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:22,026 INFO L471 AbstractCegarLoop]: Abstraction has 3424 states and 4428 transitions. [2025-02-08 07:55:22,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:55:22,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 4428 transitions. [2025-02-08 07:55:22,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-08 07:55:22,029 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:22,029 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, 1, 1] [2025-02-08 07:55:22,037 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 07:55:22,229 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 07:55:22,230 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1073REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:22,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:22,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1957131938, now seen corresponding path program 1 times [2025-02-08 07:55:22,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:22,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426408633] [2025-02-08 07:55:22,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:22,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:22,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:22,234 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 07:55:22,235 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 07:55:22,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 07:55:22,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 07:55:22,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:22,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:22,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:55:22,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:22,449 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 07:55:22,590 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 07:55:22,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:55:22,941 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 07:55:22,942 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:22,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426408633] [2025-02-08 07:55:22,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426408633] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:55:22,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:55:22,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 07:55:22,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38776399] [2025-02-08 07:55:22,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:55:22,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:55:22,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:22,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:55:22,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:55:22,943 INFO L87 Difference]: Start difference. First operand 3424 states and 4428 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 07:55:33,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:33,538 INFO L93 Difference]: Finished difference Result 5145 states and 6603 transitions. [2025-02-08 07:55:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 07:55:33,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 39 [2025-02-08 07:55:33,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:33,544 INFO L225 Difference]: With dead ends: 5145 [2025-02-08 07:55:33,544 INFO L226 Difference]: Without dead ends: 5145 [2025-02-08 07:55:33,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 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 07:55:33,545 INFO L435 NwaCegarLoop]: 2428 mSDtfsCounter, 2171 mSDsluCounter, 5495 mSDsCounter, 0 mSdLazyCounter, 5249 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 7923 SdHoareTripleChecker+Invalid, 5277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:33,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2177 Valid, 7923 Invalid, 5277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5249 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2025-02-08 07:55:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5145 states. [2025-02-08 07:55:33,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5145 to 3588. [2025-02-08 07:55:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3588 states, 2702 states have (on average 1.7120651369356032) internal successors, (4626), 3569 states have internal predecessors, (4626), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:55:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 4660 transitions. [2025-02-08 07:55:33,590 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 4660 transitions. Word has length 39 [2025-02-08 07:55:33,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:33,590 INFO L471 AbstractCegarLoop]: Abstraction has 3588 states and 4660 transitions. [2025-02-08 07:55:33,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 07:55:33,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 4660 transitions. [2025-02-08 07:55:33,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-08 07:55:33,592 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:33,593 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, 1, 1] [2025-02-08 07:55:33,605 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 07:55:33,793 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 07:55:33,794 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr765REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:33,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:33,795 INFO L85 PathProgramCache]: Analyzing trace with hash 504796323, now seen corresponding path program 1 times [2025-02-08 07:55:33,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:33,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727391980] [2025-02-08 07:55:33,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:33,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:33,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:33,797 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 07:55:33,799 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 07:55:33,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 07:55:33,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 07:55:33,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:33,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:33,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:55:33,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:33,991 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 07:55:34,131 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 07:55:34,131 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:55:34,447 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 07:55:34,449 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:34,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727391980] [2025-02-08 07:55:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727391980] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:55:34,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:55:34,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 07:55:34,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616667222] [2025-02-08 07:55:34,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:55:34,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:55:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:34,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:55:34,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:55:34,450 INFO L87 Difference]: Start difference. First operand 3588 states and 4660 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 07:55:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:44,676 INFO L93 Difference]: Finished difference Result 5309 states and 6835 transitions. [2025-02-08 07:55:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 07:55:44,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 39 [2025-02-08 07:55:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:44,682 INFO L225 Difference]: With dead ends: 5309 [2025-02-08 07:55:44,682 INFO L226 Difference]: Without dead ends: 5309 [2025-02-08 07:55:44,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 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 07:55:44,683 INFO L435 NwaCegarLoop]: 2428 mSDtfsCounter, 3689 mSDsluCounter, 6069 mSDsCounter, 0 mSdLazyCounter, 5651 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3695 SdHoareTripleChecker+Valid, 8497 SdHoareTripleChecker+Invalid, 5684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 5651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:44,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3695 Valid, 8497 Invalid, 5684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 5651 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2025-02-08 07:55:44,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5309 states. [2025-02-08 07:55:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5309 to 3752. [2025-02-08 07:55:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3752 states, 2866 states have (on average 1.6950453593859036) internal successors, (4858), 3733 states have internal predecessors, (4858), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 07:55:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 4892 transitions. [2025-02-08 07:55:44,726 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 4892 transitions. Word has length 39 [2025-02-08 07:55:44,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:44,726 INFO L471 AbstractCegarLoop]: Abstraction has 3752 states and 4892 transitions. [2025-02-08 07:55:44,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 07:55:44,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 4892 transitions. [2025-02-08 07:55:44,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-08 07:55:44,728 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:44,728 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:44,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-08 07:55:44,928 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 07:55:44,928 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr404REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:44,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash 54658926, now seen corresponding path program 1 times [2025-02-08 07:55:44,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:44,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513164188] [2025-02-08 07:55:44,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:44,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:44,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:44,931 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 07:55:44,932 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 07:55:45,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 07:55:45,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 07:55:45,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:45,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:45,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:45,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:45,217 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 07:55:45,218 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:45,218 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:45,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513164188] [2025-02-08 07:55:45,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513164188] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:45,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:45,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:55:45,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932028798] [2025-02-08 07:55:45,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:45,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:55:45,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:45,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:55:45,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:55:45,218 INFO L87 Difference]: Start difference. First operand 3752 states and 4892 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 07:55:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:45,403 INFO L93 Difference]: Finished difference Result 5337 states and 6590 transitions. [2025-02-08 07:55:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:55:45,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 41 [2025-02-08 07:55:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:45,408 INFO L225 Difference]: With dead ends: 5337 [2025-02-08 07:55:45,408 INFO L226 Difference]: Without dead ends: 5337 [2025-02-08 07:55:45,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 07:55:45,409 INFO L435 NwaCegarLoop]: 2246 mSDtfsCounter, 1455 mSDsluCounter, 2071 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 4317 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:45,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 4317 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:55:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2025-02-08 07:55:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 4470. [2025-02-08 07:55:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 3580 states have (on average 1.6885474860335195) internal successors, (6045), 4444 states have internal predecessors, (6045), 26 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-08 07:55:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 6093 transitions. [2025-02-08 07:55:45,448 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 6093 transitions. Word has length 41 [2025-02-08 07:55:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:45,448 INFO L471 AbstractCegarLoop]: Abstraction has 4470 states and 6093 transitions. [2025-02-08 07:55:45,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 07:55:45,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 6093 transitions. [2025-02-08 07:55:45,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-08 07:55:45,449 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:45,449 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] [2025-02-08 07:55:45,457 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 07:55:45,649 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 07:55:45,650 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:45,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:45,650 INFO L85 PathProgramCache]: Analyzing trace with hash 522692098, now seen corresponding path program 1 times [2025-02-08 07:55:45,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:45,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104697458] [2025-02-08 07:55:45,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:45,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:45,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:45,653 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 07:55:45,654 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 07:55:45,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-08 07:55:45,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 07:55:45,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:45,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:45,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:45,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:45,875 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 07:55:45,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:45,876 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:45,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104697458] [2025-02-08 07:55:45,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104697458] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:45,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:45,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:55:45,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737984604] [2025-02-08 07:55:45,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:45,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:45,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:45,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:45,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:45,877 INFO L87 Difference]: Start difference. First operand 4470 states and 6093 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:45,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:45,932 INFO L93 Difference]: Finished difference Result 4452 states and 6059 transitions. [2025-02-08 07:55:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:55:45,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-02-08 07:55:45,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:45,938 INFO L225 Difference]: With dead ends: 4452 [2025-02-08 07:55:45,938 INFO L226 Difference]: Without dead ends: 4452 [2025-02-08 07:55:45,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 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 07:55:45,939 INFO L435 NwaCegarLoop]: 2153 mSDtfsCounter, 27 mSDsluCounter, 4269 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6422 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:45,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6422 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:55:45,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2025-02-08 07:55:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 4452. [2025-02-08 07:55:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 3562 states have (on average 1.6875350926445818) internal successors, (6011), 4426 states have internal predecessors, (6011), 26 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-08 07:55:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 6059 transitions. [2025-02-08 07:55:45,984 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 6059 transitions. Word has length 51 [2025-02-08 07:55:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:45,985 INFO L471 AbstractCegarLoop]: Abstraction has 4452 states and 6059 transitions. [2025-02-08 07:55:45,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 6059 transitions. [2025-02-08 07:55:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-08 07:55:45,986 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:45,986 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] [2025-02-08 07:55:45,994 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 07:55:46,186 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 07:55:46,187 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr712REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:46,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:46,187 INFO L85 PathProgramCache]: Analyzing trace with hash 280976066, now seen corresponding path program 1 times [2025-02-08 07:55:46,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:46,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196174484] [2025-02-08 07:55:46,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:46,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:46,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:46,189 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 07:55:46,190 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 07:55:46,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-08 07:55:46,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-08 07:55:46,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:46,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:46,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:46,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:46,522 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 07:55:46,522 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:46,522 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:46,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196174484] [2025-02-08 07:55:46,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196174484] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:46,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:46,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:55:46,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660541210] [2025-02-08 07:55:46,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:46,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:55:46,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:46,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:55:46,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:55:46,523 INFO L87 Difference]: Start difference. First operand 4452 states and 6059 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 07:55:46,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:46,678 INFO L93 Difference]: Finished difference Result 5818 states and 7518 transitions. [2025-02-08 07:55:46,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:55:46,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 52 [2025-02-08 07:55:46,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:46,683 INFO L225 Difference]: With dead ends: 5818 [2025-02-08 07:55:46,683 INFO L226 Difference]: Without dead ends: 5818 [2025-02-08 07:55:46,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 07:55:46,684 INFO L435 NwaCegarLoop]: 2170 mSDtfsCounter, 1332 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:46,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 4275 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:55:46,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2025-02-08 07:55:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 5189. [2025-02-08 07:55:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 4295 states have (on average 1.6821885913853318) internal successors, (7225), 5156 states have internal predecessors, (7225), 33 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-02-08 07:55:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 7287 transitions. [2025-02-08 07:55:46,753 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 7287 transitions. Word has length 52 [2025-02-08 07:55:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:46,753 INFO L471 AbstractCegarLoop]: Abstraction has 5189 states and 7287 transitions. [2025-02-08 07:55:46,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 07:55:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 7287 transitions. [2025-02-08 07:55:46,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 07:55:46,754 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:46,754 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:46,765 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 07:55:46,954 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 07:55:46,955 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr991REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:46,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:46,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1682869539, now seen corresponding path program 1 times [2025-02-08 07:55:46,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:46,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260993703] [2025-02-08 07:55:46,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:46,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:46,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:46,958 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 07:55:46,960 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 07:55:47,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 07:55:47,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 07:55:47,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:47,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:47,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:47,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:47,218 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 07:55:47,218 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:47,218 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:47,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260993703] [2025-02-08 07:55:47,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260993703] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:47,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:47,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:55:47,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549840894] [2025-02-08 07:55:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:47,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:47,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:47,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:47,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:47,219 INFO L87 Difference]: Start difference. First operand 5189 states and 7287 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:47,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:47,295 INFO L93 Difference]: Finished difference Result 4734 states and 6633 transitions. [2025-02-08 07:55:47,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:55:47,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-02-08 07:55:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:47,299 INFO L225 Difference]: With dead ends: 4734 [2025-02-08 07:55:47,299 INFO L226 Difference]: Without dead ends: 4734 [2025-02-08 07:55:47,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 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 07:55:47,300 INFO L435 NwaCegarLoop]: 2107 mSDtfsCounter, 56 mSDsluCounter, 4141 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6248 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 07:55:47,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6248 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:55:47,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2025-02-08 07:55:47,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4731. [2025-02-08 07:55:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4731 states, 3860 states have (on average 1.7015544041450776) internal successors, (6568), 4698 states have internal predecessors, (6568), 33 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-02-08 07:55:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4731 states to 4731 states and 6630 transitions. [2025-02-08 07:55:47,360 INFO L78 Accepts]: Start accepts. Automaton has 4731 states and 6630 transitions. Word has length 55 [2025-02-08 07:55:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:47,360 INFO L471 AbstractCegarLoop]: Abstraction has 4731 states and 6630 transitions. [2025-02-08 07:55:47,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4731 states and 6630 transitions. [2025-02-08 07:55:47,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 07:55:47,361 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:47,361 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:47,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 07:55:47,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:47,561 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr683REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:47,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:47,562 INFO L85 PathProgramCache]: Analyzing trace with hash -333929250, now seen corresponding path program 1 times [2025-02-08 07:55:47,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:47,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326870349] [2025-02-08 07:55:47,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:47,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:47,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:47,564 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:47,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 07:55:47,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 07:55:47,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 07:55:47,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:47,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:47,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:55:47,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:47,777 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 07:55:47,778 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:47,778 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:47,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326870349] [2025-02-08 07:55:47,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326870349] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:47,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:47,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:55:47,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708358077] [2025-02-08 07:55:47,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:47,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:47,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:47,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:47,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:47,779 INFO L87 Difference]: Start difference. First operand 4731 states and 6630 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:47,839 INFO L93 Difference]: Finished difference Result 4267 states and 5888 transitions. [2025-02-08 07:55:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:55:47,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-02-08 07:55:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:47,844 INFO L225 Difference]: With dead ends: 4267 [2025-02-08 07:55:47,844 INFO L226 Difference]: Without dead ends: 4267 [2025-02-08 07:55:47,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 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 07:55:47,845 INFO L435 NwaCegarLoop]: 2072 mSDtfsCounter, 76 mSDsluCounter, 4051 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6123 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 07:55:47,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6123 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:55:47,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2025-02-08 07:55:47,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4260. [2025-02-08 07:55:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 3401 states have (on average 1.7109673625404294) internal successors, (5819), 4227 states have internal predecessors, (5819), 33 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-02-08 07:55:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 5881 transitions. [2025-02-08 07:55:47,882 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 5881 transitions. Word has length 55 [2025-02-08 07:55:47,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:47,882 INFO L471 AbstractCegarLoop]: Abstraction has 4260 states and 5881 transitions. [2025-02-08 07:55:47,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 5881 transitions. [2025-02-08 07:55:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 07:55:47,884 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:47,884 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] [2025-02-08 07:55:47,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-08 07:55:48,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:48,085 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:48,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash 35232186, now seen corresponding path program 1 times [2025-02-08 07:55:48,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:48,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500267358] [2025-02-08 07:55:48,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:48,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:48,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:48,087 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:48,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 07:55:48,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 07:55:48,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 07:55:48,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:48,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:48,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 07:55:48,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:48,280 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:55:48,280 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 07:55:48,285 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 33 treesize of output 31 [2025-02-08 07:55:48,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 07:55:48,322 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 62 treesize of output 22 [2025-02-08 07:55:48,335 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 07:55:48,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:48,335 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:48,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500267358] [2025-02-08 07:55:48,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500267358] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:48,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:48,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:55:48,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180519709] [2025-02-08 07:55:48,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:48,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:55:48,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:48,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:55:48,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:55:48,336 INFO L87 Difference]: Start difference. First operand 4260 states and 5881 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:48,973 INFO L93 Difference]: Finished difference Result 4837 states and 6375 transitions. [2025-02-08 07:55:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:55:48,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-02-08 07:55:48,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:48,978 INFO L225 Difference]: With dead ends: 4837 [2025-02-08 07:55:48,978 INFO L226 Difference]: Without dead ends: 4837 [2025-02-08 07:55:48,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 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 07:55:48,978 INFO L435 NwaCegarLoop]: 2194 mSDtfsCounter, 1719 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 5634 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:48,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1728 Valid, 5634 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 07:55:48,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4837 states. [2025-02-08 07:55:49,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4837 to 3976. [2025-02-08 07:55:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3976 states, 3120 states have (on average 1.7189102564102565) internal successors, (5363), 3946 states have internal predecessors, (5363), 30 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-02-08 07:55:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3976 states to 3976 states and 5419 transitions. [2025-02-08 07:55:49,016 INFO L78 Accepts]: Start accepts. Automaton has 3976 states and 5419 transitions. Word has length 59 [2025-02-08 07:55:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:49,016 INFO L471 AbstractCegarLoop]: Abstraction has 3976 states and 5419 transitions. [2025-02-08 07:55:49,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:55:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3976 states and 5419 transitions. [2025-02-08 07:55:49,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-08 07:55:49,017 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:49,017 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] [2025-02-08 07:55:49,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 07:55:49,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:49,217 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr991REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:49,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:49,218 INFO L85 PathProgramCache]: Analyzing trace with hash 632176805, now seen corresponding path program 1 times [2025-02-08 07:55:49,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:49,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776606373] [2025-02-08 07:55:49,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:49,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:49,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:49,220 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:49,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 07:55:49,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-08 07:55:49,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-08 07:55:49,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:49,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:49,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:55:49,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:49,479 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 07:55:49,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 07:55:49,782 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 07:55:49,789 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:55:49,789 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 07:55:49,794 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 07:55:49,794 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:49,794 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:49,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776606373] [2025-02-08 07:55:49,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776606373] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:49,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:49,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:55:49,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752255129] [2025-02-08 07:55:49,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:49,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:55:49,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:49,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:55:49,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:55:49,795 INFO L87 Difference]: Start difference. First operand 3976 states and 5419 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 07:55:53,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:53,011 INFO L93 Difference]: Finished difference Result 3892 states and 5231 transitions. [2025-02-08 07:55:53,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:55:53,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2025-02-08 07:55:53,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:53,015 INFO L225 Difference]: With dead ends: 3892 [2025-02-08 07:55:53,015 INFO L226 Difference]: Without dead ends: 3892 [2025-02-08 07:55:53,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:55:53,016 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 3414 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:53,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3424 Valid, 1643 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-02-08 07:55:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2025-02-08 07:55:53,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3779. [2025-02-08 07:55:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3779 states, 3007 states have (on average 1.651812437645494) internal successors, (4967), 3749 states have internal predecessors, (4967), 30 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-02-08 07:55:53,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 5023 transitions. [2025-02-08 07:55:53,046 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 5023 transitions. Word has length 63 [2025-02-08 07:55:53,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:53,047 INFO L471 AbstractCegarLoop]: Abstraction has 3779 states and 5023 transitions. [2025-02-08 07:55:53,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 07:55:53,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 5023 transitions. [2025-02-08 07:55:53,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-08 07:55:53,047 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:53,048 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:53,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 07:55:53,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:53,248 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr984REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:53,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 159276016, now seen corresponding path program 1 times [2025-02-08 07:55:53,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:53,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650160622] [2025-02-08 07:55:53,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:53,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:53,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:53,251 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:55:53,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 07:55:53,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-08 07:55:53,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-08 07:55:53,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:53,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:53,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:55:53,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:53,478 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 07:55:53,489 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 07:55:53,502 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 07:55:53,507 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 07:55:53,508 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:53,508 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:53,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650160622] [2025-02-08 07:55:53,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650160622] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:53,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:53,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:55:53,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767597382] [2025-02-08 07:55:53,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:53,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:55:53,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:53,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:55:53,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:55:53,508 INFO L87 Difference]: Start difference. First operand 3779 states and 5023 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 07:55:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:55:56,027 INFO L93 Difference]: Finished difference Result 3778 states and 5021 transitions. [2025-02-08 07:55:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 07:55:56,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2025-02-08 07:55:56,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:55:56,031 INFO L225 Difference]: With dead ends: 3778 [2025-02-08 07:55:56,031 INFO L226 Difference]: Without dead ends: 3778 [2025-02-08 07:55:56,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 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 07:55:56,032 INFO L435 NwaCegarLoop]: 1998 mSDtfsCounter, 2 mSDsluCounter, 3409 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5407 SdHoareTripleChecker+Invalid, 2593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-08 07:55:56,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5407 Invalid, 2593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-08 07:55:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2025-02-08 07:55:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3778. [2025-02-08 07:55:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3778 states, 3007 states have (on average 1.6511473229132025) internal successors, (4965), 3748 states have internal predecessors, (4965), 30 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-02-08 07:55:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 5021 transitions. [2025-02-08 07:55:56,057 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 5021 transitions. Word has length 68 [2025-02-08 07:55:56,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:55:56,057 INFO L471 AbstractCegarLoop]: Abstraction has 3778 states and 5021 transitions. [2025-02-08 07:55:56,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 07:55:56,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 5021 transitions. [2025-02-08 07:55:56,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-08 07:55:56,057 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:55:56,057 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:55:56,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-08 07:55:56,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:56,258 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr985REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-08 07:55:56,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:55:56,258 INFO L85 PathProgramCache]: Analyzing trace with hash 159276017, now seen corresponding path program 1 times [2025-02-08 07:55:56,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:55:56,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553991196] [2025-02-08 07:55:56,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:55:56,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:55:56,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:55:56,260 INFO L229 MonitoredProcess]: Starting monitored process 24 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 07:55:56,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 07:55:56,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-08 07:55:56,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-08 07:55:56,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:55:56,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:55:56,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 07:55:56,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:55:56,513 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 07:55:56,532 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 07:55:56,535 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 07:55:56,560 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 07:55:56,569 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 07:55:56,569 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:55:56,569 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:55:56,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553991196] [2025-02-08 07:55:56,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553991196] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:55:56,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:55:56,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:55:56,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031031471] [2025-02-08 07:55:56,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:55:56,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:55:56,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:55:56,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:55:56,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:55:56,570 INFO L87 Difference]: Start difference. First operand 3778 states and 5021 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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)