./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.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 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:29:57,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:29:57,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:29:57,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:29:57,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:29:57,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:29:57,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:29:57,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:29:57,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:29:57,145 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:29:57,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:29:57,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:29:57,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:29:57,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:29:57,146 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:29:57,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:29:57,147 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:29:57,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:29:57,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:29:57,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:29:57,147 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:29:57,147 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:29:57,147 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:29:57,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:29:57,148 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:29:57,148 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:29:57,148 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:29:57,148 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:29:57,148 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:29:57,148 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:29:57,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:29:57,148 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:29:57,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:29:57,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:29:57,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:29:57,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:29:57,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:29:57,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:29:57,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:29:57,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:29:57,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:29:57,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:29:57,149 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 -> 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 [2025-02-06 12:29:57,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:29:57,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:29:57,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:29:57,383 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:29:57,384 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:29:57,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2025-02-06 12:29:58,527 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31094c701/e565cd65dcef49b19e7dd3e7a00beb39/FLAGae8c91425 [2025-02-06 12:29:58,787 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:29:58,788 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2025-02-06 12:29:58,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31094c701/e565cd65dcef49b19e7dd3e7a00beb39/FLAGae8c91425 [2025-02-06 12:29:58,810 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31094c701/e565cd65dcef49b19e7dd3e7a00beb39 [2025-02-06 12:29:58,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:29:58,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:29:58,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:29:58,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:29:58,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:29:58,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:29:58" (1/1) ... [2025-02-06 12:29:58,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a83808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:58, skipping insertion in model container [2025-02-06 12:29:58,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:29:58" (1/1) ... [2025-02-06 12:29:58,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:29:59,056 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,083 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,087 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,091 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,096 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,115 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,116 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,118 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,121 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,128 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,129 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,130 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,131 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,132 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,132 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,134 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:59,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:29:59,157 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-06 12:29:59,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45c4f5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:59, skipping insertion in model container [2025-02-06 12:29:59,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:29:59,158 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:29:59,159 INFO L158 Benchmark]: Toolchain (without parser) took 345.46ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 89.0MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:29:59,159 INFO L158 Benchmark]: CDTParser took 1.01ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:29:59,160 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.84ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 89.0MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:29:59,160 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.84ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 89.0MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_SFH_test4-2.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 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:30:00,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:30:00,839 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:30:00,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:30:00,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:30:00,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:30:00,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:30:00,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:30:00,869 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:30:00,869 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:30:00,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:30:00,870 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:30:00,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:30:00,870 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:30:00,871 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:30:00,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:30:00,871 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:30:00,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:30:00,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:30:00,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:30:00,871 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:30:00,871 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:30:00,872 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:30:00,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:30:00,872 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:30:00,872 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:30:00,872 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:30:00,872 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:30:00,872 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:30:00,872 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:30:00,872 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:30:00,873 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:30:00,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:30:00,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:30:00,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:30:00,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:30:00,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:30:00,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:30:00,873 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:30:00,873 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:30:00,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:30:00,874 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:30:00,874 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:30:00,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:30:00,874 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 -> 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 [2025-02-06 12:30:01,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:30:01,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:30:01,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:30:01,123 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:30:01,123 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:30:01,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2025-02-06 12:30:02,257 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c96f8119/d618895863074d8daa3bea710c7b8293/FLAGe995becf6 [2025-02-06 12:30:02,526 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:30:02,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2025-02-06 12:30:02,545 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c96f8119/d618895863074d8daa3bea710c7b8293/FLAGe995becf6 [2025-02-06 12:30:02,562 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c96f8119/d618895863074d8daa3bea710c7b8293 [2025-02-06 12:30:02,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:30:02,566 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:30:02,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:30:02,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:30:02,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:30:02,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:30:02" (1/1) ... [2025-02-06 12:30:02,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d710469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:02, skipping insertion in model container [2025-02-06 12:30:02,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:30:02" (1/1) ... [2025-02-06 12:30:02,604 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:30:02,867 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,889 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,891 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,895 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,903 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,934 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,937 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,940 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,944 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,952 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,953 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,954 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,955 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,955 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,956 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,961 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:02,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:30:02,983 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:30:02,995 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:30:03,029 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,048 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,049 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,052 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,057 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,086 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,088 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,090 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,092 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,098 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,101 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,103 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,104 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,105 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,106 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,107 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:30:03,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:30:03,116 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:30:03,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:30:03,214 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:30:03,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03 WrapperNode [2025-02-06 12:30:03,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:30:03,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:30:03,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:30:03,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:30:03,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,295 INFO L138 Inliner]: procedures = 179, calls = 387, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1298 [2025-02-06 12:30:03,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:30:03,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:30:03,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:30:03,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:30:03,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,405 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [355, 2]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 90 writes are split as follows [90, 0]. [2025-02-06 12:30:03,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,445 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,447 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:30:03,469 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:30:03,469 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:30:03,469 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:30:03,470 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (1/1) ... [2025-02-06 12:30:03,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:30:03,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:03,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:30:03,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:30:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:30:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:30:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:30:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:30:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 12:30:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 12:30:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:30:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:30:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:30:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:30:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:30:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:30:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:30:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:30:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:30:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:30:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:30:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:30:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:30:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:30:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:30:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:30:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:30:03,707 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:30:03,708 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:30:06,861 INFO L? ?]: Removed 1544 outVars from TransFormulas that were not future-live. [2025-02-06 12:30:06,863 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:30:06,898 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:30:06,898 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:30:06,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:30:06 BoogieIcfgContainer [2025-02-06 12:30:06,898 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:30:06,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:30:06,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:30:06,907 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:30:06,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:30:02" (1/3) ... [2025-02-06 12:30:06,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74afe0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:30:06, skipping insertion in model container [2025-02-06 12:30:06,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:30:03" (2/3) ... [2025-02-06 12:30:06,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74afe0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:30:06, skipping insertion in model container [2025-02-06 12:30:06,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:30:06" (3/3) ... [2025-02-06 12:30:06,910 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-2.i [2025-02-06 12:30:06,919 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:30:06,921 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test4-2.i that has 4 procedures, 1463 locations, 1 initial locations, 41 loop locations, and 733 error locations. [2025-02-06 12:30:06,964 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:30:06,974 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;@36abd061, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:30:06,975 INFO L334 AbstractCegarLoop]: Starting to check reachability of 733 error locations. [2025-02-06 12:30:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 1458 states, 712 states have (on average 2.2191011235955056) internal successors, (1580), 1449 states have internal predecessors, (1580), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 12:30:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:30:06,983 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:06,983 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:30:06,983 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr730REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:06,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:06,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1573617134, now seen corresponding path program 1 times [2025-02-06 12:30:06,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:06,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473545964] [2025-02-06 12:30:06,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:06,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:06,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:07,000 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:07,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 12:30:07,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:30:07,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:30:07,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:07,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:07,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:30:07,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:07,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:30:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:07,198 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:07,198 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:07,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473545964] [2025-02-06 12:30:07,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473545964] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:07,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:07,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:30:07,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651000570] [2025-02-06 12:30:07,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:07,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:30:07,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:07,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:30:07,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:30:07,218 INFO L87 Difference]: Start difference. First operand has 1458 states, 712 states have (on average 2.2191011235955056) internal successors, (1580), 1449 states have internal predecessors, (1580), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:08,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:08,817 INFO L93 Difference]: Finished difference Result 1346 states and 1430 transitions. [2025-02-06 12:30:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:30:08,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-06 12:30:08,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:08,829 INFO L225 Difference]: With dead ends: 1346 [2025-02-06 12:30:08,830 INFO L226 Difference]: Without dead ends: 1344 [2025-02-06 12:30:08,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:30:08,832 INFO L435 NwaCegarLoop]: 816 mSDtfsCounter, 1049 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:08,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 933 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 12:30:08,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2025-02-06 12:30:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1343. [2025-02-06 12:30:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 702 states have (on average 1.9857549857549857) internal successors, (1394), 1334 states have internal predecessors, (1394), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 12:30:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1426 transitions. [2025-02-06 12:30:08,932 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1426 transitions. Word has length 5 [2025-02-06 12:30:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:08,932 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 1426 transitions. [2025-02-06 12:30:08,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:08,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1426 transitions. [2025-02-06 12:30:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:30:08,932 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:08,932 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:30:08,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 12:30:09,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:09,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr731REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:09,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:09,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1573617135, now seen corresponding path program 1 times [2025-02-06 12:30:09,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:09,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216027976] [2025-02-06 12:30:09,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:09,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:09,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:09,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:09,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 12:30:09,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:30:09,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:30:09,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:09,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:09,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:30:09,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:09,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:30:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:09,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:09,265 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:09,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216027976] [2025-02-06 12:30:09,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216027976] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:09,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:09,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:30:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347038025] [2025-02-06 12:30:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:09,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:30:09,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:09,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:30:09,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:30:09,266 INFO L87 Difference]: Start difference. First operand 1343 states and 1426 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:11,254 INFO L93 Difference]: Finished difference Result 1667 states and 1770 transitions. [2025-02-06 12:30:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:30:11,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-06 12:30:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:11,259 INFO L225 Difference]: With dead ends: 1667 [2025-02-06 12:30:11,259 INFO L226 Difference]: Without dead ends: 1667 [2025-02-06 12:30:11,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:30:11,259 INFO L435 NwaCegarLoop]: 1180 mSDtfsCounter, 527 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:11,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1774 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-06 12:30:11,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2025-02-06 12:30:11,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1515. [2025-02-06 12:30:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 884 states have (on average 1.9445701357466063) internal successors, (1719), 1506 states have internal predecessors, (1719), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 12:30:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1751 transitions. [2025-02-06 12:30:11,281 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1751 transitions. Word has length 5 [2025-02-06 12:30:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:11,282 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 1751 transitions. [2025-02-06 12:30:11,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1751 transitions. [2025-02-06 12:30:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:30:11,282 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:11,282 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:30:11,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 12:30:11,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:11,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:11,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:11,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1572316305, now seen corresponding path program 1 times [2025-02-06 12:30:11,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:11,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489463992] [2025-02-06 12:30:11,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:11,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:11,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:11,486 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:11,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 12:30:11,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:30:11,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:30:11,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:11,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:11,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:30:11,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:11,606 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:11,606 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:11,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489463992] [2025-02-06 12:30:11,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489463992] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:11,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:11,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:30:11,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288856435] [2025-02-06 12:30:11,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:11,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:30:11,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:11,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:30:11,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:11,608 INFO L87 Difference]: Start difference. First operand 1515 states and 1751 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:12,233 INFO L93 Difference]: Finished difference Result 2302 states and 2672 transitions. [2025-02-06 12:30:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:30:12,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-06 12:30:12,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:12,240 INFO L225 Difference]: With dead ends: 2302 [2025-02-06 12:30:12,241 INFO L226 Difference]: Without dead ends: 2302 [2025-02-06 12:30:12,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:12,242 INFO L435 NwaCegarLoop]: 1413 mSDtfsCounter, 695 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:12,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 3995 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 12:30:12,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2025-02-06 12:30:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2003. [2025-02-06 12:30:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 1372 states have (on average 1.9198250728862973) internal successors, (2634), 1991 states have internal predecessors, (2634), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:30:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 2672 transitions. [2025-02-06 12:30:12,282 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 2672 transitions. Word has length 5 [2025-02-06 12:30:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:12,282 INFO L471 AbstractCegarLoop]: Abstraction has 2003 states and 2672 transitions. [2025-02-06 12:30:12,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 2672 transitions. [2025-02-06 12:30:12,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 12:30:12,282 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:12,283 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:30:12,289 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 [2025-02-06 12:30:12,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:12,487 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:12,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:12,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1497094036, now seen corresponding path program 1 times [2025-02-06 12:30:12,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:12,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136358190] [2025-02-06 12:30:12,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:12,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:12,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:12,493 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:12,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 12:30:12,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:30:12,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:30:12,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:12,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:12,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:30:12,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:12,609 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:12,609 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:12,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136358190] [2025-02-06 12:30:12,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136358190] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:12,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:12,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:30:12,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057809274] [2025-02-06 12:30:12,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:12,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:30:12,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:12,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:30:12,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:30:12,610 INFO L87 Difference]: Start difference. First operand 2003 states and 2672 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:12,766 INFO L93 Difference]: Finished difference Result 2081 states and 2617 transitions. [2025-02-06 12:30:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:30:12,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 12:30:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:12,772 INFO L225 Difference]: With dead ends: 2081 [2025-02-06 12:30:12,772 INFO L226 Difference]: Without dead ends: 2081 [2025-02-06 12:30:12,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:30:12,772 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 317 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:12,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 2837 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:30:12,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2025-02-06 12:30:12,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1863. [2025-02-06 12:30:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1232 states have (on average 1.9301948051948052) internal successors, (2378), 1851 states have internal predecessors, (2378), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:30:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2416 transitions. [2025-02-06 12:30:12,799 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2416 transitions. Word has length 6 [2025-02-06 12:30:12,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:12,799 INFO L471 AbstractCegarLoop]: Abstraction has 1863 states and 2416 transitions. [2025-02-06 12:30:12,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:12,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2416 transitions. [2025-02-06 12:30:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 12:30:12,800 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:12,800 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:12,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 12:30:13,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:13,000 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:13,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:13,001 INFO L85 PathProgramCache]: Analyzing trace with hash -106707824, now seen corresponding path program 1 times [2025-02-06 12:30:13,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:13,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131615594] [2025-02-06 12:30:13,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:13,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:13,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:13,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:13,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 12:30:13,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:30:13,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:30:13,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:13,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:13,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 12:30:13,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:13,109 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:13,109 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:13,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131615594] [2025-02-06 12:30:13,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131615594] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:13,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:13,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:30:13,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959392190] [2025-02-06 12:30:13,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:13,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:30:13,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:13,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:30:13,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:30:13,111 INFO L87 Difference]: Start difference. First operand 1863 states and 2416 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) [2025-02-06 12:30:14,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:14,338 INFO L93 Difference]: Finished difference Result 2046 states and 2607 transitions. [2025-02-06 12:30:14,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:30:14,339 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 [2025-02-06 12:30:14,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:14,344 INFO L225 Difference]: With dead ends: 2046 [2025-02-06 12:30:14,344 INFO L226 Difference]: Without dead ends: 2045 [2025-02-06 12:30:14,344 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 [2025-02-06 12:30:14,345 INFO L435 NwaCegarLoop]: 1329 mSDtfsCounter, 187 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:14,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 2118 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-06 12:30:14,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2025-02-06 12:30:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1865. [2025-02-06 12:30:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1234 states have (on average 1.9286871961102108) internal successors, (2380), 1853 states have internal predecessors, (2380), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:30:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2418 transitions. [2025-02-06 12:30:14,370 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2418 transitions. Word has length 8 [2025-02-06 12:30:14,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:14,370 INFO L471 AbstractCegarLoop]: Abstraction has 1865 states and 2418 transitions. [2025-02-06 12:30:14,370 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) [2025-02-06 12:30:14,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2418 transitions. [2025-02-06 12:30:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:30:14,371 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:14,371 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:14,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 12:30:14,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:14,571 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:14,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:14,572 INFO L85 PathProgramCache]: Analyzing trace with hash 987236270, now seen corresponding path program 1 times [2025-02-06 12:30:14,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:14,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299865151] [2025-02-06 12:30:14,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:14,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:14,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:14,574 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:14,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 12:30:14,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:30:14,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:30:14,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:14,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:14,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:30:14,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:14,695 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:14,695 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:14,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299865151] [2025-02-06 12:30:14,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299865151] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:14,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:14,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:30:14,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224198446] [2025-02-06 12:30:14,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:14,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:30:14,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:14,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:30:14,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:14,695 INFO L87 Difference]: Start difference. First operand 1865 states and 2418 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:15,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:15,480 INFO L93 Difference]: Finished difference Result 2083 states and 2618 transitions. [2025-02-06 12:30:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:30:15,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2025-02-06 12:30:15,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:15,485 INFO L225 Difference]: With dead ends: 2083 [2025-02-06 12:30:15,486 INFO L226 Difference]: Without dead ends: 2079 [2025-02-06 12:30:15,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:30:15,486 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 319 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 4107 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:15,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 4107 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 12:30:15,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2025-02-06 12:30:15,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 1861. [2025-02-06 12:30:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1230 states have (on average 1.9308943089430894) internal successors, (2375), 1849 states have internal predecessors, (2375), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:30:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2413 transitions. [2025-02-06 12:30:15,510 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2413 transitions. Word has length 9 [2025-02-06 12:30:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:15,510 INFO L471 AbstractCegarLoop]: Abstraction has 1861 states and 2413 transitions. [2025-02-06 12:30:15,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2413 transitions. [2025-02-06 12:30:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 12:30:15,510 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:15,510 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:15,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 12:30:15,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:15,711 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr726REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:15,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:15,711 INFO L85 PathProgramCache]: Analyzing trace with hash 313230247, now seen corresponding path program 1 times [2025-02-06 12:30:15,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:15,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003488984] [2025-02-06 12:30:15,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:15,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:15,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:15,715 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:15,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 12:30:15,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 12:30:15,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 12:30:15,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:15,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:15,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:30:15,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:15,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:30:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:15,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:15,852 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003488984] [2025-02-06 12:30:15,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003488984] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:15,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:15,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:30:15,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484629366] [2025-02-06 12:30:15,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:15,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:30:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:15,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:30:15,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:15,853 INFO L87 Difference]: Start difference. First operand 1861 states and 2413 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2025-02-06 12:30:17,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:17,619 INFO L93 Difference]: Finished difference Result 1846 states and 2375 transitions. [2025-02-06 12:30:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:30:17,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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 [2025-02-06 12:30:17,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:17,624 INFO L225 Difference]: With dead ends: 1846 [2025-02-06 12:30:17,624 INFO L226 Difference]: Without dead ends: 1846 [2025-02-06 12:30:17,624 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 [2025-02-06 12:30:17,625 INFO L435 NwaCegarLoop]: 789 mSDtfsCounter, 1099 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:17,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 1499 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 12:30:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2025-02-06 12:30:17,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1838. [2025-02-06 12:30:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1230 states have (on average 1.8934959349593496) internal successors, (2329), 1826 states have internal predecessors, (2329), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:30:17,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2367 transitions. [2025-02-06 12:30:17,645 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2367 transitions. Word has length 11 [2025-02-06 12:30:17,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:17,645 INFO L471 AbstractCegarLoop]: Abstraction has 1838 states and 2367 transitions. [2025-02-06 12:30:17,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2025-02-06 12:30:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2367 transitions. [2025-02-06 12:30:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 12:30:17,646 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:17,646 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:17,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 12:30:17,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:17,851 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr727REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:17,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash 313230248, now seen corresponding path program 1 times [2025-02-06 12:30:17,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:17,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307170148] [2025-02-06 12:30:17,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:17,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:17,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:17,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:17,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 12:30:17,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 12:30:17,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 12:30:17,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:17,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:17,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:30:17,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:17,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:30:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:18,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:18,013 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:18,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307170148] [2025-02-06 12:30:18,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307170148] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:18,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:18,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:30:18,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176107810] [2025-02-06 12:30:18,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:18,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:30:18,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:18,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:30:18,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:18,014 INFO L87 Difference]: Start difference. First operand 1838 states and 2367 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2025-02-06 12:30:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:20,627 INFO L93 Difference]: Finished difference Result 2120 states and 2540 transitions. [2025-02-06 12:30:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:30:20,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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 [2025-02-06 12:30:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:20,632 INFO L225 Difference]: With dead ends: 2120 [2025-02-06 12:30:20,632 INFO L226 Difference]: Without dead ends: 2120 [2025-02-06 12:30:20,632 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 [2025-02-06 12:30:20,632 INFO L435 NwaCegarLoop]: 1468 mSDtfsCounter, 650 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:20,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 2929 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-06 12:30:20,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2025-02-06 12:30:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 1952. [2025-02-06 12:30:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1344 states have (on average 1.8355654761904763) internal successors, (2467), 1940 states have internal predecessors, (2467), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:30:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2505 transitions. [2025-02-06 12:30:20,654 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2505 transitions. Word has length 11 [2025-02-06 12:30:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:20,655 INFO L471 AbstractCegarLoop]: Abstraction has 1952 states and 2505 transitions. [2025-02-06 12:30:20,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2025-02-06 12:30:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2505 transitions. [2025-02-06 12:30:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-06 12:30:20,656 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:20,656 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] [2025-02-06 12:30:20,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 12:30:20,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:20,857 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr727REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:20,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:20,857 INFO L85 PathProgramCache]: Analyzing trace with hash -183983775, now seen corresponding path program 1 times [2025-02-06 12:30:20,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:20,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375590114] [2025-02-06 12:30:20,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:20,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:20,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:20,859 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:20,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 12:30:20,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 12:30:20,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 12:30:20,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:20,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:21,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:30:21,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:21,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:30:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:21,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:30:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:21,453 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:21,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375590114] [2025-02-06 12:30:21,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375590114] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:30:21,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:30:21,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:30:21,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366618668] [2025-02-06 12:30:21,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:30:21,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:30:21,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:21,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:30:21,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:30:21,454 INFO L87 Difference]: Start difference. First operand 1952 states and 2505 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:29,073 INFO L93 Difference]: Finished difference Result 2507 states and 3070 transitions. [2025-02-06 12:30:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:30:29,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 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 30 [2025-02-06 12:30:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:29,078 INFO L225 Difference]: With dead ends: 2507 [2025-02-06 12:30:29,078 INFO L226 Difference]: Without dead ends: 2507 [2025-02-06 12:30:29,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:30:29,079 INFO L435 NwaCegarLoop]: 1509 mSDtfsCounter, 1384 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 3407 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 4549 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:29,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 4549 Invalid, 3435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3407 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2025-02-06 12:30:29,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2025-02-06 12:30:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2116. [2025-02-06 12:30:29,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1508 states have (on average 1.789787798408488) internal successors, (2699), 2104 states have internal predecessors, (2699), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:30:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2737 transitions. [2025-02-06 12:30:29,102 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2737 transitions. Word has length 30 [2025-02-06 12:30:29,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:29,102 INFO L471 AbstractCegarLoop]: Abstraction has 2116 states and 2737 transitions. [2025-02-06 12:30:29,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:29,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2737 transitions. [2025-02-06 12:30:29,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-06 12:30:29,103 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:29,103 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] [2025-02-06 12:30:29,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 12:30:29,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:29,304 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr645REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:29,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:29,304 INFO L85 PathProgramCache]: Analyzing trace with hash 24944796, now seen corresponding path program 1 times [2025-02-06 12:30:29,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:29,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123214132] [2025-02-06 12:30:29,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:29,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:29,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:29,307 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:29,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 12:30:29,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 12:30:29,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 12:30:29,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:29,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:29,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:30:29,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:29,605 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:29,605 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123214132] [2025-02-06 12:30:29,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123214132] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:29,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:29,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:30:29,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772081679] [2025-02-06 12:30:29,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:29,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:30:29,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:29,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:30:29,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:29,606 INFO L87 Difference]: Start difference. First operand 2116 states and 2737 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:29,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:29,678 INFO L93 Difference]: Finished difference Result 1805 states and 2301 transitions. [2025-02-06 12:30:29,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:30:29,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2025-02-06 12:30:29,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:29,709 INFO L225 Difference]: With dead ends: 1805 [2025-02-06 12:30:29,709 INFO L226 Difference]: Without dead ends: 1805 [2025-02-06 12:30:29,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:30:29,710 INFO L435 NwaCegarLoop]: 1332 mSDtfsCounter, 56 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3923 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:29,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3923 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:30:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2025-02-06 12:30:29,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1803. [2025-02-06 12:30:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1218 states have (on average 1.8563218390804597) internal successors, (2261), 1791 states have internal predecessors, (2261), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:30:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2299 transitions. [2025-02-06 12:30:29,747 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2299 transitions. Word has length 46 [2025-02-06 12:30:29,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:29,748 INFO L471 AbstractCegarLoop]: Abstraction has 1803 states and 2299 transitions. [2025-02-06 12:30:29,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2299 transitions. [2025-02-06 12:30:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-06 12:30:29,753 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:29,753 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] [2025-02-06 12:30:29,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 12:30:29,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:29,958 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr645REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:29,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:29,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1292382180, now seen corresponding path program 1 times [2025-02-06 12:30:29,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:29,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788109365] [2025-02-06 12:30:29,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:29,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:29,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:29,962 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:29,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 12:30:30,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 12:30:30,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 12:30:30,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:30,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:30,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:30:30,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:30,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:30:30,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:30:30,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 12:30:30,660 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:30:30,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 12:30:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:30,678 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:30,678 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:30,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788109365] [2025-02-06 12:30:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788109365] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:30,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:30:30,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068524064] [2025-02-06 12:30:30,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:30,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:30:30,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:30,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:30:30,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:30:30,678 INFO L87 Difference]: Start difference. First operand 1803 states and 2299 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:32,716 INFO L93 Difference]: Finished difference Result 1719 states and 2174 transitions. [2025-02-06 12:30:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:30:32,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2025-02-06 12:30:32,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:32,720 INFO L225 Difference]: With dead ends: 1719 [2025-02-06 12:30:32,720 INFO L226 Difference]: Without dead ends: 1719 [2025-02-06 12:30:32,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:30:32,720 INFO L435 NwaCegarLoop]: 592 mSDtfsCounter, 965 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:32,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1283 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:30:32,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2025-02-06 12:30:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1537. [2025-02-06 12:30:32,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1036 states have (on average 1.7384169884169884) internal successors, (1801), 1525 states have internal predecessors, (1801), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:30:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 1839 transitions. [2025-02-06 12:30:32,732 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 1839 transitions. Word has length 54 [2025-02-06 12:30:32,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:32,733 INFO L471 AbstractCegarLoop]: Abstraction has 1537 states and 1839 transitions. [2025-02-06 12:30:32,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 1839 transitions. [2025-02-06 12:30:32,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-06 12:30:32,734 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:32,734 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] [2025-02-06 12:30:32,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 12:30:32,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:32,934 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:32,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:32,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1661560814, now seen corresponding path program 1 times [2025-02-06 12:30:32,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:32,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492400718] [2025-02-06 12:30:32,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:32,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:32,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:32,937 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:32,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 12:30:33,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-06 12:30:33,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 12:30:33,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:33,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:33,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:30:33,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:33,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:30:33,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:30:33,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 12:30:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:33,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:33,170 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:33,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492400718] [2025-02-06 12:30:33,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492400718] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:33,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:33,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:30:33,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486270260] [2025-02-06 12:30:33,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:33,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:30:33,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:33,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:30:33,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:30:33,171 INFO L87 Difference]: Start difference. First operand 1537 states and 1839 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:34,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:34,819 INFO L93 Difference]: Finished difference Result 1536 states and 1837 transitions. [2025-02-06 12:30:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:30:34,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-02-06 12:30:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:34,822 INFO L225 Difference]: With dead ends: 1536 [2025-02-06 12:30:34,822 INFO L226 Difference]: Without dead ends: 1536 [2025-02-06 12:30:34,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:30:34,823 INFO L435 NwaCegarLoop]: 1258 mSDtfsCounter, 2 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:34,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3238 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-06 12:30:34,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2025-02-06 12:30:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1536. [2025-02-06 12:30:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1036 states have (on average 1.7364864864864864) internal successors, (1799), 1524 states have internal predecessors, (1799), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:30:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 1837 transitions. [2025-02-06 12:30:34,835 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 1837 transitions. Word has length 59 [2025-02-06 12:30:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:34,835 INFO L471 AbstractCegarLoop]: Abstraction has 1536 states and 1837 transitions. [2025-02-06 12:30:34,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 1837 transitions. [2025-02-06 12:30:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-06 12:30:34,836 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:34,836 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] [2025-02-06 12:30:34,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 12:30:35,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:35,036 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr639REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:35,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:35,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1661560813, now seen corresponding path program 1 times [2025-02-06 12:30:35,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:35,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259576740] [2025-02-06 12:30:35,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:35,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:35,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:35,039 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:35,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 12:30:35,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-06 12:30:35,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 12:30:35,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:35,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:35,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 12:30:35,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:35,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:30:35,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:30:35,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 12:30:35,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-06 12:30:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:35,298 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:35,298 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:35,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259576740] [2025-02-06 12:30:35,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259576740] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:35,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:35,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:30:35,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194177164] [2025-02-06 12:30:35,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:35,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:30:35,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:35,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:30:35,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:30:35,299 INFO L87 Difference]: Start difference. First operand 1536 states and 1837 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:37,557 INFO L93 Difference]: Finished difference Result 1535 states and 1835 transitions. [2025-02-06 12:30:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:30:37,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-02-06 12:30:37,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:37,561 INFO L225 Difference]: With dead ends: 1535 [2025-02-06 12:30:37,561 INFO L226 Difference]: Without dead ends: 1535 [2025-02-06 12:30:37,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:30:37,563 INFO L435 NwaCegarLoop]: 1258 mSDtfsCounter, 1 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:37,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3269 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-06 12:30:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2025-02-06 12:30:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1535. [2025-02-06 12:30:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1034 states have (on average 1.7379110251450678) internal successors, (1797), 1523 states have internal predecessors, (1797), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:30:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 1835 transitions. [2025-02-06 12:30:37,579 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 1835 transitions. Word has length 59 [2025-02-06 12:30:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:37,579 INFO L471 AbstractCegarLoop]: Abstraction has 1535 states and 1835 transitions. [2025-02-06 12:30:37,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 1835 transitions. [2025-02-06 12:30:37,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 12:30:37,579 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:37,579 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] [2025-02-06 12:30:37,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 12:30:37,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:37,787 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:37,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:37,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1962179087, now seen corresponding path program 1 times [2025-02-06 12:30:37,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:37,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996388357] [2025-02-06 12:30:37,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:37,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:37,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:37,789 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:37,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 12:30:37,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:30:37,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:30:37,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:37,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:37,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:30:37,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:37,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:30:38,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 12:30:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:38,054 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:38,054 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:38,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996388357] [2025-02-06 12:30:38,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996388357] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:38,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:38,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:30:38,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255305111] [2025-02-06 12:30:38,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:38,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:30:38,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:38,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:30:38,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:30:38,057 INFO L87 Difference]: Start difference. First operand 1535 states and 1835 transitions. Second operand has 7 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:30:41,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:41,335 INFO L93 Difference]: Finished difference Result 1553 states and 1865 transitions. [2025-02-06 12:30:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:30:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2025-02-06 12:30:41,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:41,342 INFO L225 Difference]: With dead ends: 1553 [2025-02-06 12:30:41,342 INFO L226 Difference]: Without dead ends: 1553 [2025-02-06 12:30:41,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 12:30:41,343 INFO L435 NwaCegarLoop]: 1241 mSDtfsCounter, 12 mSDsluCounter, 3853 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5094 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:41,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5094 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2445 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-02-06 12:30:41,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2025-02-06 12:30:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1544. [2025-02-06 12:30:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1042 states have (on average 1.7351247600767754) internal successors, (1808), 1530 states have internal predecessors, (1808), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (28), 12 states have call predecessors, (28), 19 states have call successors, (28) [2025-02-06 12:30:41,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1855 transitions. [2025-02-06 12:30:41,359 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1855 transitions. Word has length 67 [2025-02-06 12:30:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:41,359 INFO L471 AbstractCegarLoop]: Abstraction has 1544 states and 1855 transitions. [2025-02-06 12:30:41,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:30:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1855 transitions. [2025-02-06 12:30:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 12:30:41,359 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:41,359 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] [2025-02-06 12:30:41,369 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 [2025-02-06 12:30:41,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:41,560 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr635REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:41,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1962179088, now seen corresponding path program 1 times [2025-02-06 12:30:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:41,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359401278] [2025-02-06 12:30:41,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:41,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:41,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:41,564 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:41,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 12:30:41,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:30:41,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:30:41,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:41,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:41,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:30:41,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:41,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:41,800 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:41,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359401278] [2025-02-06 12:30:41,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359401278] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:41,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:41,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:30:41,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774431456] [2025-02-06 12:30:41,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:41,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:30:41,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:41,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:30:41,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:41,801 INFO L87 Difference]: Start difference. First operand 1544 states and 1855 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:30:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:41,869 INFO L93 Difference]: Finished difference Result 1538 states and 1841 transitions. [2025-02-06 12:30:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:30:41,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2025-02-06 12:30:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:41,874 INFO L225 Difference]: With dead ends: 1538 [2025-02-06 12:30:41,874 INFO L226 Difference]: Without dead ends: 1538 [2025-02-06 12:30:41,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:41,878 INFO L435 NwaCegarLoop]: 1257 mSDtfsCounter, 0 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3763 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:41,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3763 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:30:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2025-02-06 12:30:41,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1538. [2025-02-06 12:30:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1036 states have (on average 1.7374517374517375) internal successors, (1800), 1526 states have internal predecessors, (1800), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-02-06 12:30:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1841 transitions. [2025-02-06 12:30:41,899 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1841 transitions. Word has length 67 [2025-02-06 12:30:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:41,900 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 1841 transitions. [2025-02-06 12:30:41,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:30:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1841 transitions. [2025-02-06 12:30:41,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 12:30:41,901 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:41,901 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:41,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 12:30:42,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:42,102 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:42,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:42,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1792901002, now seen corresponding path program 1 times [2025-02-06 12:30:42,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:42,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91814775] [2025-02-06 12:30:42,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:42,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:42,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:42,109 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:42,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 12:30:42,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-06 12:30:42,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 12:30:42,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:42,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:42,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:30:42,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:42,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:30:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:42,427 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:42,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91814775] [2025-02-06 12:30:42,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91814775] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:30:42,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:30:42,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 12:30:42,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193757592] [2025-02-06 12:30:42,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:30:42,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:30:42,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:42,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:30:42,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:30:42,429 INFO L87 Difference]: Start difference. First operand 1538 states and 1841 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:30:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:42,594 INFO L93 Difference]: Finished difference Result 1550 states and 1860 transitions. [2025-02-06 12:30:42,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:30:42,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2025-02-06 12:30:42,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:42,608 INFO L225 Difference]: With dead ends: 1550 [2025-02-06 12:30:42,608 INFO L226 Difference]: Without dead ends: 1550 [2025-02-06 12:30:42,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-06 12:30:42,608 INFO L435 NwaCegarLoop]: 1256 mSDtfsCounter, 7 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6259 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:42,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 6259 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:30:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2025-02-06 12:30:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1548. [2025-02-06 12:30:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1045 states have (on average 1.736842105263158) internal successors, (1815), 1535 states have internal predecessors, (1815), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-02-06 12:30:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 1856 transitions. [2025-02-06 12:30:42,668 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 1856 transitions. Word has length 68 [2025-02-06 12:30:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:42,669 INFO L471 AbstractCegarLoop]: Abstraction has 1548 states and 1856 transitions. [2025-02-06 12:30:42,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:30:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 1856 transitions. [2025-02-06 12:30:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-06 12:30:42,669 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:42,669 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:42,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-06 12:30:42,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:42,870 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:30:42,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:42,873 INFO L85 PathProgramCache]: Analyzing trace with hash 326523855, now seen corresponding path program 2 times [2025-02-06 12:30:42,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:42,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440201590] [2025-02-06 12:30:42,873 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:30:42,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:42,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:42,875 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:42,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 12:30:43,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-02-06 12:31:04,580 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 12:31:04,580 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:31:04,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:31:04,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 12:31:04,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:31:04,652 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:31:04,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 12:31:04,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:31:04,769 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:31:04,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-06 12:31:04,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-02-06 12:31:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 12:31:04,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:31:04,859 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-06 12:31:04,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-02-06 12:31:04,903 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:31:04,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440201590] [2025-02-06 12:31:04,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440201590] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:31:04,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [848771565] [2025-02-06 12:31:04,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:31:04,904 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:31:04,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:31:04,906 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 12:31:04,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2025-02-06 12:31:05,075 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-02-06 12:31:05,567 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 12:31:05,567 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:31:05,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:31:05,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:31:05,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:31:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:31:05,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:31:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:31:05,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [848771565] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:31:05,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:31:05,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-02-06 12:31:05,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916585795] [2025-02-06 12:31:05,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:31:05,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 12:31:05,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:31:05,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 12:31:05,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=553, Unknown=6, NotChecked=0, Total=650 [2025-02-06 12:31:05,987 INFO L87 Difference]: Start difference. First operand 1548 states and 1856 transitions. Second operand has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:31:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:31:14,879 INFO L93 Difference]: Finished difference Result 1564 states and 1879 transitions. [2025-02-06 12:31:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 12:31:14,880 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 71 [2025-02-06 12:31:14,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:31:14,883 INFO L225 Difference]: With dead ends: 1564 [2025-02-06 12:31:14,883 INFO L226 Difference]: Without dead ends: 1558 [2025-02-06 12:31:14,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=395, Invalid=2250, Unknown=7, NotChecked=0, Total=2652 [2025-02-06 12:31:14,884 INFO L435 NwaCegarLoop]: 761 mSDtfsCounter, 1005 mSDsluCounter, 9103 mSDsCounter, 0 mSdLazyCounter, 8280 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 9864 SdHoareTripleChecker+Invalid, 8331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 8280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:31:14,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 9864 Invalid, 8331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 8280 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2025-02-06 12:31:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2025-02-06 12:31:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1556. [2025-02-06 12:31:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1054 states have (on average 1.730550284629981) internal successors, (1824), 1543 states have internal predecessors, (1824), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-02-06 12:31:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 1865 transitions. [2025-02-06 12:31:14,900 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 1865 transitions. Word has length 71 [2025-02-06 12:31:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:31:14,900 INFO L471 AbstractCegarLoop]: Abstraction has 1556 states and 1865 transitions. [2025-02-06 12:31:14,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:31:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 1865 transitions. [2025-02-06 12:31:14,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-06 12:31:14,903 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:31:14,903 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:31:14,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2025-02-06 12:31:15,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-06 12:31:15,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:31:15,304 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr635REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:31:15,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:31:15,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2134422928, now seen corresponding path program 1 times [2025-02-06 12:31:15,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:31:15,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228433396] [2025-02-06 12:31:15,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:31:15,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:31:15,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:31:15,306 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:31:15,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 12:31:15,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-02-06 12:31:15,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-02-06 12:31:15,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:31:15,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:31:15,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 12:31:15,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:31:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:31:15,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:31:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:31:16,011 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:31:16,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228433396] [2025-02-06 12:31:16,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228433396] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:31:16,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:31:16,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-06 12:31:16,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216139778] [2025-02-06 12:31:16,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:31:16,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 12:31:16,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:31:16,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 12:31:16,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-06 12:31:16,012 INFO L87 Difference]: Start difference. First operand 1556 states and 1865 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:31:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:31:17,092 INFO L93 Difference]: Finished difference Result 1580 states and 1904 transitions. [2025-02-06 12:31:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 12:31:17,093 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2025-02-06 12:31:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:31:17,096 INFO L225 Difference]: With dead ends: 1580 [2025-02-06 12:31:17,096 INFO L226 Difference]: Without dead ends: 1574 [2025-02-06 12:31:17,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 12:31:17,097 INFO L435 NwaCegarLoop]: 1256 mSDtfsCounter, 20 mSDsluCounter, 13772 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 15028 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:31:17,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 15028 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 12:31:17,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2025-02-06 12:31:17,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1574. [2025-02-06 12:31:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1072 states have (on average 1.7229477611940298) internal successors, (1847), 1561 states have internal predecessors, (1847), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-02-06 12:31:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 1888 transitions. [2025-02-06 12:31:17,110 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 1888 transitions. Word has length 77 [2025-02-06 12:31:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:31:17,110 INFO L471 AbstractCegarLoop]: Abstraction has 1574 states and 1888 transitions. [2025-02-06 12:31:17,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:31:17,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 1888 transitions. [2025-02-06 12:31:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-02-06 12:31:17,111 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:31:17,111 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:31:17,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 12:31:17,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:31:17,312 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr635REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:31:17,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:31:17,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1538080848, now seen corresponding path program 2 times [2025-02-06 12:31:17,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:31:17,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686289856] [2025-02-06 12:31:17,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:31:17,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:31:17,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:31:17,314 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:31:17,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 12:31:17,473 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 89 statements into 2 equivalence classes. [2025-02-06 12:31:28,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 89 of 89 statements. [2025-02-06 12:31:28,965 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:31:28,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:31:28,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-02-06 12:31:28,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:31:29,048 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:31:29,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 12:31:29,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:31:29,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:31:29,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 12:31:29,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-02-06 12:31:29,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-06 12:31:29,506 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:31:29,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-02-06 12:31:29,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-02-06 12:31:29,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-02-06 12:31:29,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-06 12:31:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-02-06 12:31:29,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:31:29,857 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1421 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1421) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_1420 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1421 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1421) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1420) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-02-06 12:31:29,861 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:31:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686289856] [2025-02-06 12:31:29,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686289856] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:31:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [284449301] [2025-02-06 12:31:29,861 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:31:29,861 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:31:29,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:31:29,863 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 12:31:29,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2025-02-06 12:31:30,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 89 statements into 2 equivalence classes. [2025-02-06 12:31:30,661 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 89 of 89 statements. [2025-02-06 12:31:30,661 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:31:30,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:31:30,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-06 12:31:30,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:31:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:31:31,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:31:33,259 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:31:33,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [284449301] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:31:33,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:31:33,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-02-06 12:31:33,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941437148] [2025-02-06 12:31:33,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:31:33,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-06 12:31:33,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:31:33,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-06 12:31:33,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2025-02-06 12:31:33,262 INFO L87 Difference]: Start difference. First operand 1574 states and 1888 transitions. Second operand has 58 states, 57 states have (on average 3.0) internal successors, (171), 58 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)