./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 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_BER_nondet_test1-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:07:39,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:07:39,125 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:07:39,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:07:39,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:07:39,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:07:39,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:07:39,151 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:07:39,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:07:39,151 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:07:39,152 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:07:39,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:07:39,153 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:07:39,153 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:07:39,153 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:07:39,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:07:39,153 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:07:39,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:07:39,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:07:39,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:07:39,154 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:07:39,154 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:07:39,154 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:07:39,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:07:39,154 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:07:39,154 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:07:39,154 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:07:39,154 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:07:39,154 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:07:39,154 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:07:39,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:07:39,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:07:39,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:07:39,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:07:39,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:07:39,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:07:39,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:07:39,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:07:39,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:07:39,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:07:39,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:07:39,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:07:39,156 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2025-02-06 12:07:39,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:07:39,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:07:39,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:07:39,385 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:07:39,385 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:07:39,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-02-06 12:07:40,590 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/18468f499/c0c53406e03343ce8a1f4ca2e402eab6/FLAG48f2b3be4 [2025-02-06 12:07:40,913 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:07:40,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-02-06 12:07:40,931 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/18468f499/c0c53406e03343ce8a1f4ca2e402eab6/FLAG48f2b3be4 [2025-02-06 12:07:40,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/18468f499/c0c53406e03343ce8a1f4ca2e402eab6 [2025-02-06 12:07:40,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:07:40,950 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:07:40,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:07:40,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:07:40,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:07:40,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:07:40" (1/1) ... [2025-02-06 12:07:40,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38047b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:40, skipping insertion in model container [2025-02-06 12:07:40,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:07:40" (1/1) ... [2025-02-06 12:07:40,991 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:07:41,328 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 12:07:41,363 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 12:07:41,371 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 12:07:41,374 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 12:07:41,381 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 12:07:41,400 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 12:07:41,404 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 12:07:41,406 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 12:07:41,407 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 12:07:41,408 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 12:07:41,408 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 12:07:41,411 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:07:41,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:07:41,433 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 12:07:41,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66197212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:41, skipping insertion in model container [2025-02-06 12:07:41,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:07:41,434 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:07:41,435 INFO L158 Benchmark]: Toolchain (without parser) took 484.82ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 87.3MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:07:41,436 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:07:41,436 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.30ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 87.3MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:07:41,437 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.30ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 87.3MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 753]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:07:43,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:07:43,263 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:07:43,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:07:43,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:07:43,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:07:43,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:07:43,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:07:43,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:07:43,294 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:07:43,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:07:43,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:07:43,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:07:43,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:07:43,296 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:07:43,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:07:43,296 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:07:43,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:07:43,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:07:43,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:07:43,296 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:07:43,297 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:07:43,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:07:43,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:07:43,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:07:43,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:07:43,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:07:43,299 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:07:43,299 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:07:43,299 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:07:43,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:07:43,299 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:07:43,299 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:07:43,299 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2025-02-06 12:07:43,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:07:43,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:07:43,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:07:43,541 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:07:43,541 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:07:43,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-02-06 12:07:44,676 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/975e514ba/87fe110a3b3b40daa6f42adbc5fb03fb/FLAG48b820f45 [2025-02-06 12:07:44,982 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:07:44,983 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-02-06 12:07:44,998 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/975e514ba/87fe110a3b3b40daa6f42adbc5fb03fb/FLAG48b820f45 [2025-02-06 12:07:45,013 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/975e514ba/87fe110a3b3b40daa6f42adbc5fb03fb [2025-02-06 12:07:45,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:07:45,018 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:07:45,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:07:45,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:07:45,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:07:45,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4595e11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45, skipping insertion in model container [2025-02-06 12:07:45,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,057 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:07:45,270 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:07:45,301 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 12:07:45,304 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 12:07:45,307 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 12:07:45,315 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 12:07:45,326 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 12:07:45,327 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 12:07:45,329 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 12:07:45,331 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 12:07:45,332 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 12:07:45,333 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 12:07:45,336 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 12:07:45,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:07:45,353 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:07:45,360 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:07:45,383 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 12:07:45,408 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 12:07:45,413 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 12:07:45,415 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 12:07:45,421 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 12:07:45,431 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 12:07:45,432 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 12:07:45,434 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 12:07:45,434 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 12:07:45,435 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 12:07:45,435 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 12:07:45,437 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 12:07:45,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:07:45,442 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:07:45,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:07:45,545 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:07:45,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45 WrapperNode [2025-02-06 12:07:45,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:07:45,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:07:45,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:07:45,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:07:45,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,570 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,609 INFO L138 Inliner]: procedures = 179, calls = 221, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 729 [2025-02-06 12:07:45,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:07:45,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:07:45,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:07:45,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:07:45,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,626 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,679 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2025-02-06 12:07:45,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,705 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:07:45,721 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:07:45,721 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:07:45,721 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:07:45,722 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (1/1) ... [2025-02-06 12:07:45,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:07:45,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:07:45,757 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 12:07:45,760 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 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:07:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:07:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:07:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:07:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:07:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:07:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:07:46,011 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:07:46,014 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:07:48,759 INFO L? ?]: Removed 893 outVars from TransFormulas that were not future-live. [2025-02-06 12:07:48,759 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:07:48,787 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:07:48,788 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:07:48,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:07:48 BoogieIcfgContainer [2025-02-06 12:07:48,788 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:07:48,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:07:48,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:07:48,794 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:07:48,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:07:45" (1/3) ... [2025-02-06 12:07:48,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9aaa5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:07:48, skipping insertion in model container [2025-02-06 12:07:48,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:45" (2/3) ... [2025-02-06 12:07:48,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9aaa5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:07:48, skipping insertion in model container [2025-02-06 12:07:48,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:07:48" (3/3) ... [2025-02-06 12:07:48,796 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test1-2.i [2025-02-06 12:07:48,807 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:07:48,809 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_nondet_test1-2.i that has 3 procedures, 845 locations, 1 initial locations, 25 loop locations, and 425 error locations. [2025-02-06 12:07:48,856 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:07:48,865 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;@24f2c229, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:07:48,865 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2025-02-06 12:07:48,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 840 states, 413 states have (on average 2.2106537530266346) internal successors, (913), 835 states have internal predecessors, (913), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:07:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:07:48,874 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:07:48,874 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:07:48,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr423REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:07:48,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:07:48,879 INFO L85 PathProgramCache]: Analyzing trace with hash 906557908, now seen corresponding path program 1 times [2025-02-06 12:07:48,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:07:48,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623041596] [2025-02-06 12:07:48,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:07:48,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:07:48,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:07:48,890 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 12:07:48,892 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 12:07:49,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:07:49,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:07:49,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:07:49,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:07:49,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 12:07:49,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:07:49,021 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 12:07:49,022 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:07:49,022 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:07:49,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623041596] [2025-02-06 12:07:49,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623041596] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:07:49,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:07:49,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:07:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781178162] [2025-02-06 12:07:49,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:07:49,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 12:07:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:07:49,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 12:07:49,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 12:07:49,052 INFO L87 Difference]: Start difference. First operand has 840 states, 413 states have (on average 2.2106537530266346) internal successors, (913), 835 states have internal predecessors, (913), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:07:49,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:07:49,103 INFO L93 Difference]: Finished difference Result 830 states and 868 transitions. [2025-02-06 12:07:49,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 12:07:49,105 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-06 12:07:49,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:07:49,113 INFO L225 Difference]: With dead ends: 830 [2025-02-06 12:07:49,113 INFO L226 Difference]: Without dead ends: 828 [2025-02-06 12:07:49,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 12:07:49,118 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:07:49,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:07:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2025-02-06 12:07:49,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2025-02-06 12:07:49,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 407 states have (on average 2.113022113022113) internal successors, (860), 823 states have internal predecessors, (860), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:07:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 866 transitions. [2025-02-06 12:07:49,184 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 866 transitions. Word has length 5 [2025-02-06 12:07:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:07:49,184 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 866 transitions. [2025-02-06 12:07:49,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:07:49,185 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 866 transitions. [2025-02-06 12:07:49,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:07:49,185 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:07:49,185 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:07:49,192 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 12:07:49,385 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 12:07:49,386 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr423REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:07:49,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:07:49,387 INFO L85 PathProgramCache]: Analyzing trace with hash 906557939, now seen corresponding path program 1 times [2025-02-06 12:07:49,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:07:49,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492411586] [2025-02-06 12:07:49,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:07:49,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:07:49,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:07:49,390 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 12:07:49,392 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 12:07:49,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:07:49,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:07:49,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:07:49,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:07:49,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:07:49,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:07:49,500 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 12:07:49,515 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 12:07:49,516 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:07:49,516 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:07:49,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492411586] [2025-02-06 12:07:49,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492411586] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:07:49,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:07:49,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:07:49,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380169599] [2025-02-06 12:07:49,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:07:49,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:07:49,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:07:49,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:07:49,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:07:49,518 INFO L87 Difference]: Start difference. First operand 828 states and 866 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 12:07:50,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:07:50,975 INFO L93 Difference]: Finished difference Result 780 states and 819 transitions. [2025-02-06 12:07:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:07:50,979 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 12:07:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:07:50,982 INFO L225 Difference]: With dead ends: 780 [2025-02-06 12:07:50,982 INFO L226 Difference]: Without dead ends: 780 [2025-02-06 12:07:50,983 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 12:07:50,983 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 519 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:07:50,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 621 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-06 12:07:50,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2025-02-06 12:07:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 779. [2025-02-06 12:07:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 407 states have (on average 1.9926289926289926) internal successors, (811), 774 states have internal predecessors, (811), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:07:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 817 transitions. [2025-02-06 12:07:51,013 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 817 transitions. Word has length 5 [2025-02-06 12:07:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:07:51,013 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 817 transitions. [2025-02-06 12:07:51,013 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 12:07:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 817 transitions. [2025-02-06 12:07:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:07:51,013 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:07:51,013 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:07:51,022 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 12:07:51,217 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 12:07:51,217 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr424REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:07:51,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:07:51,218 INFO L85 PathProgramCache]: Analyzing trace with hash 906557940, now seen corresponding path program 1 times [2025-02-06 12:07:51,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:07:51,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171563804] [2025-02-06 12:07:51,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:07:51,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:07:51,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:07:51,223 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 12:07:51,224 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 12:07:51,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:07:51,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:07:51,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:07:51,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:07:51,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:07:51,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:07:51,341 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 12:07:51,367 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 12:07:51,367 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:07:51,367 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:07:51,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171563804] [2025-02-06 12:07:51,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171563804] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:07:51,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:07:51,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:07:51,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203289263] [2025-02-06 12:07:51,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:07:51,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:07:51,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:07:51,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:07:51,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:07:51,369 INFO L87 Difference]: Start difference. First operand 779 states and 817 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 12:07:53,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:07:53,277 INFO L93 Difference]: Finished difference Result 854 states and 896 transitions. [2025-02-06 12:07:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:07:53,279 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 12:07:53,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:07:53,282 INFO L225 Difference]: With dead ends: 854 [2025-02-06 12:07:53,282 INFO L226 Difference]: Without dead ends: 854 [2025-02-06 12:07:53,282 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 12:07:53,285 INFO L435 NwaCegarLoop]: 686 mSDtfsCounter, 269 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-06 12:07:53,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 970 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-06 12:07:53,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2025-02-06 12:07:53,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 807. [2025-02-06 12:07:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 446 states have (on average 1.9641255605381165) internal successors, (876), 802 states have internal predecessors, (876), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:07:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 882 transitions. [2025-02-06 12:07:53,306 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 882 transitions. Word has length 5 [2025-02-06 12:07:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:07:53,306 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 882 transitions. [2025-02-06 12:07:53,306 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 12:07:53,306 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 882 transitions. [2025-02-06 12:07:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 12:07:53,307 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:07:53,307 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:07:53,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 12:07:53,511 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 12:07:53,511 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:07:53,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:07:53,511 INFO L85 PathProgramCache]: Analyzing trace with hash 905896602, now seen corresponding path program 1 times [2025-02-06 12:07:53,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:07:53,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599432994] [2025-02-06 12:07:53,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:07:53,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:07:53,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:07:53,514 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 12:07:53,517 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 12:07:53,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:07:53,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:07:53,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:07:53,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:07:53,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:07:53,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:07:53,654 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 12:07:53,654 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:07:53,654 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:07:53,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599432994] [2025-02-06 12:07:53,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599432994] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:07:53,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:07:53,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:07:53,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263097961] [2025-02-06 12:07:53,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:07:53,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:07:53,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:07:53,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:07:53,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:07:53,657 INFO L87 Difference]: Start difference. First operand 807 states and 882 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 12:07:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:07:54,349 INFO L93 Difference]: Finished difference Result 1118 states and 1235 transitions. [2025-02-06 12:07:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:07:54,350 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 12:07:54,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:07:54,353 INFO L225 Difference]: With dead ends: 1118 [2025-02-06 12:07:54,353 INFO L226 Difference]: Without dead ends: 1118 [2025-02-06 12:07:54,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:07:54,354 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 332 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:07:54,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2374 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 12:07:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2025-02-06 12:07:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 897. [2025-02-06 12:07:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 536 states have (on average 1.914179104477612) internal successors, (1026), 892 states have internal predecessors, (1026), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:07:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1032 transitions. [2025-02-06 12:07:54,372 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1032 transitions. Word has length 5 [2025-02-06 12:07:54,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:07:54,373 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 1032 transitions. [2025-02-06 12:07:54,373 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 12:07:54,373 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1032 transitions. [2025-02-06 12:07:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 12:07:54,373 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:07:54,373 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:07:54,380 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 12:07:54,574 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 12:07:54,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr106ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:07:54,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:07:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1311995688, now seen corresponding path program 1 times [2025-02-06 12:07:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:07:54,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598489656] [2025-02-06 12:07:54,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:07:54,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:07:54,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:07:54,580 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 12:07:54,589 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 12:07:54,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 12:07:54,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 12:07:54,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:07:54,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:07:54,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:07:54,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:07:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:07:54,698 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:07:54,698 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:07:54,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598489656] [2025-02-06 12:07:54,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598489656] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:07:54,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:07:54,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:07:54,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58355701] [2025-02-06 12:07:54,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:07:54,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:07:54,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:07:54,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:07:54,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:07:54,699 INFO L87 Difference]: Start difference. First operand 897 states and 1032 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:07:54,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:07:54,726 INFO L93 Difference]: Finished difference Result 897 states and 1031 transitions. [2025-02-06 12:07:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:07:54,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-06 12:07:54,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:07:54,729 INFO L225 Difference]: With dead ends: 897 [2025-02-06 12:07:54,729 INFO L226 Difference]: Without dead ends: 897 [2025-02-06 12:07:54,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:07:54,730 INFO L435 NwaCegarLoop]: 803 mSDtfsCounter, 7 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:07:54,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2405 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:07:54,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2025-02-06 12:07:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2025-02-06 12:07:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 536 states have (on average 1.912313432835821) internal successors, (1025), 892 states have internal predecessors, (1025), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:07:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1031 transitions. [2025-02-06 12:07:54,746 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1031 transitions. Word has length 7 [2025-02-06 12:07:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:07:54,746 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 1031 transitions. [2025-02-06 12:07:54,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:07:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1031 transitions. [2025-02-06 12:07:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 12:07:54,746 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:07:54,747 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:07:54,755 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 12:07:54,951 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 12:07:54,951 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:07:54,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:07:54,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1437066456, now seen corresponding path program 1 times [2025-02-06 12:07:54,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:07:54,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117771693] [2025-02-06 12:07:54,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:07:54,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:07:54,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:07:54,955 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 12:07:54,956 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 12:07:55,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 12:07:55,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 12:07:55,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:07:55,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:07:55,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 12:07:55,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:07:55,073 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 12:07:55,073 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:07:55,073 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:07:55,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117771693] [2025-02-06 12:07:55,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117771693] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:07:55,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:07:55,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:07:55,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044879192] [2025-02-06 12:07:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:07:55,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:07:55,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:07:55,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:07:55,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:07:55,075 INFO L87 Difference]: Start difference. First operand 897 states and 1031 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:07:56,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:07:56,138 INFO L93 Difference]: Finished difference Result 898 states and 1031 transitions. [2025-02-06 12:07:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:07:56,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-06 12:07:56,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:07:56,141 INFO L225 Difference]: With dead ends: 898 [2025-02-06 12:07:56,141 INFO L226 Difference]: Without dead ends: 891 [2025-02-06 12:07:56,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:07:56,142 INFO L435 NwaCegarLoop]: 805 mSDtfsCounter, 0 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:07:56,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1241 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-06 12:07:56,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2025-02-06 12:07:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2025-02-06 12:07:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 530 states have (on average 1.920754716981132) internal successors, (1018), 886 states have internal predecessors, (1018), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:07:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1024 transitions. [2025-02-06 12:07:56,160 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1024 transitions. Word has length 10 [2025-02-06 12:07:56,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:07:56,160 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1024 transitions. [2025-02-06 12:07:56,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:07:56,161 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1024 transitions. [2025-02-06 12:07:56,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 12:07:56,161 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:07:56,161 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:07:56,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 12:07:56,361 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 12:07:56,361 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:07:56,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:07:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash -382405817, now seen corresponding path program 1 times [2025-02-06 12:07:56,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:07:56,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144239255] [2025-02-06 12:07:56,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:07:56,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:07:56,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:07:56,367 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 12:07:56,369 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 12:07:56,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:07:56,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:07:56,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:07:56,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:07:56,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:07:56,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:07:56,471 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 12:07:56,560 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 12:07:56,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:07:56,561 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:07:56,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144239255] [2025-02-06 12:07:56,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144239255] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:07:56,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:07:56,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:07:56,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556681484] [2025-02-06 12:07:56,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:07:56,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:07:56,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:07:56,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:07:56,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:07:56,561 INFO L87 Difference]: Start difference. First operand 891 states and 1024 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:07:59,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:07:59,041 INFO L93 Difference]: Finished difference Result 1068 states and 1238 transitions. [2025-02-06 12:07:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:07:59,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-06 12:07:59,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:07:59,045 INFO L225 Difference]: With dead ends: 1068 [2025-02-06 12:07:59,045 INFO L226 Difference]: Without dead ends: 1068 [2025-02-06 12:07:59,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:07:59,046 INFO L435 NwaCegarLoop]: 750 mSDtfsCounter, 434 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:07:59,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1462 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-06 12:07:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2025-02-06 12:07:59,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1005. [2025-02-06 12:07:59,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 644 states have (on average 1.8664596273291925) internal successors, (1202), 1000 states have internal predecessors, (1202), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:07:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1208 transitions. [2025-02-06 12:07:59,064 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1208 transitions. Word has length 15 [2025-02-06 12:07:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:07:59,064 INFO L471 AbstractCegarLoop]: Abstraction has 1005 states and 1208 transitions. [2025-02-06 12:07:59,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:07:59,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1208 transitions. [2025-02-06 12:07:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 12:07:59,065 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:07:59,065 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:07:59,072 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 12:07:59,269 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 12:07:59,269 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:07:59,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:07:59,269 INFO L85 PathProgramCache]: Analyzing trace with hash -382405818, now seen corresponding path program 1 times [2025-02-06 12:07:59,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:07:59,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793730335] [2025-02-06 12:07:59,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:07:59,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:07:59,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:07:59,272 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 12:07:59,273 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 12:07:59,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:07:59,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:07:59,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:07:59,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:07:59,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:07:59,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:07:59,401 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 12:07:59,401 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:07:59,401 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:07:59,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793730335] [2025-02-06 12:07:59,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793730335] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:07:59,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:07:59,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:07:59,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499180488] [2025-02-06 12:07:59,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:07:59,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:07:59,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:07:59,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:07:59,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:07:59,402 INFO L87 Difference]: Start difference. First operand 1005 states and 1208 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:00,766 INFO L93 Difference]: Finished difference Result 990 states and 1124 transitions. [2025-02-06 12:08:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:00,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-06 12:08:00,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:00,770 INFO L225 Difference]: With dead ends: 990 [2025-02-06 12:08:00,770 INFO L226 Difference]: Without dead ends: 990 [2025-02-06 12:08:00,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:00,770 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 566 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:00,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 911 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 12:08:00,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2025-02-06 12:08:00,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 982. [2025-02-06 12:08:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 644 states have (on average 1.7236024844720497) internal successors, (1110), 977 states have internal predecessors, (1110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:08:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1116 transitions. [2025-02-06 12:08:00,785 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1116 transitions. Word has length 15 [2025-02-06 12:08:00,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:00,785 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1116 transitions. [2025-02-06 12:08:00,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:00,785 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1116 transitions. [2025-02-06 12:08:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 12:08:00,786 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:00,787 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:00,795 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 12:08:00,987 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 12:08:00,987 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:08:00,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:00,988 INFO L85 PathProgramCache]: Analyzing trace with hash -570701375, now seen corresponding path program 1 times [2025-02-06 12:08:00,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:00,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094217412] [2025-02-06 12:08:00,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:00,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:00,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:00,990 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 12:08:00,991 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 12:08:01,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 12:08:01,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 12:08:01,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:01,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:01,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:08:01,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:01,129 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 12:08:01,299 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 12:08:01,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:08:01,634 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 12:08:01,634 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:01,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094217412] [2025-02-06 12:08:01,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094217412] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:08:01,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:08:01,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:08:01,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220848818] [2025-02-06 12:08:01,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:08:01,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:08:01,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:01,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:08:01,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:08:01,636 INFO L87 Difference]: Start difference. First operand 982 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:06,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:06,685 INFO L93 Difference]: Finished difference Result 1401 states and 1636 transitions. [2025-02-06 12:08:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:08:06,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-02-06 12:08:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:06,692 INFO L225 Difference]: With dead ends: 1401 [2025-02-06 12:08:06,693 INFO L226 Difference]: Without dead ends: 1401 [2025-02-06 12:08:06,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:08:06,695 INFO L435 NwaCegarLoop]: 777 mSDtfsCounter, 1529 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:06,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 2390 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-02-06 12:08:06,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2025-02-06 12:08:06,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1146. [2025-02-06 12:08:06,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 808 states have (on average 1.6608910891089108) internal successors, (1342), 1141 states have internal predecessors, (1342), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:08:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1348 transitions. [2025-02-06 12:08:06,719 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1348 transitions. Word has length 34 [2025-02-06 12:08:06,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:06,720 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 1348 transitions. [2025-02-06 12:08:06,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1348 transitions. [2025-02-06 12:08:06,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-06 12:08:06,724 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:06,724 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] [2025-02-06 12:08:06,739 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 12:08:06,929 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 12:08:06,929 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr336REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:08:06,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:06,930 INFO L85 PathProgramCache]: Analyzing trace with hash 121317372, now seen corresponding path program 1 times [2025-02-06 12:08:06,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:06,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960014954] [2025-02-06 12:08:06,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:06,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:06,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:06,936 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 12:08:06,937 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 12:08:07,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-06 12:08:07,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-06 12:08:07,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:07,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:07,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:08:07,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:07,122 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 12:08:07,125 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:07,126 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:07,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960014954] [2025-02-06 12:08:07,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960014954] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:07,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:07,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:07,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042795245] [2025-02-06 12:08:07,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:07,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:07,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:07,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:07,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:07,129 INFO L87 Difference]: Start difference. First operand 1146 states and 1348 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 12:08:07,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:07,202 INFO L93 Difference]: Finished difference Result 835 states and 912 transitions. [2025-02-06 12:08:07,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:08:07,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2025-02-06 12:08:07,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:07,205 INFO L225 Difference]: With dead ends: 835 [2025-02-06 12:08:07,205 INFO L226 Difference]: Without dead ends: 835 [2025-02-06 12:08:07,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 12:08:07,206 INFO L435 NwaCegarLoop]: 722 mSDtfsCounter, 56 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:07,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2093 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:08:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2025-02-06 12:08:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 833. [2025-02-06 12:08:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 518 states have (on average 1.7451737451737452) internal successors, (904), 828 states have internal predecessors, (904), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:08:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 910 transitions. [2025-02-06 12:08:07,219 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 910 transitions. Word has length 50 [2025-02-06 12:08:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:07,221 INFO L471 AbstractCegarLoop]: Abstraction has 833 states and 910 transitions. [2025-02-06 12:08:07,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 12:08:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 910 transitions. [2025-02-06 12:08:07,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-06 12:08:07,222 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:07,222 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] [2025-02-06 12:08:07,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 12:08:07,422 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 12:08:07,423 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr336REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:08:07,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash -927914300, now seen corresponding path program 1 times [2025-02-06 12:08:07,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:07,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295466543] [2025-02-06 12:08:07,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:07,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:07,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:07,426 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 12:08:07,429 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 12:08:07,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-06 12:08:07,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 12:08:07,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:07,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:07,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:08:07,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:07,678 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 12:08:08,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:08:08,159 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 12:08:08,177 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:08:08,178 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 12:08:08,186 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 12:08:08,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:08,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:08,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295466543] [2025-02-06 12:08:08,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295466543] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:08,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:08,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621469954] [2025-02-06 12:08:08,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:08,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:08:08,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:08,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:08:08,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:08,191 INFO L87 Difference]: Start difference. First operand 833 states and 910 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 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 12:08:09,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:09,498 INFO L93 Difference]: Finished difference Result 795 states and 872 transitions. [2025-02-06 12:08:09,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:08:09,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 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 58 [2025-02-06 12:08:09,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:09,501 INFO L225 Difference]: With dead ends: 795 [2025-02-06 12:08:09,501 INFO L226 Difference]: Without dead ends: 795 [2025-02-06 12:08:09,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 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 12:08:09,501 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 855 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:09,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 615 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 12:08:09,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2025-02-06 12:08:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 756. [2025-02-06 12:08:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 479 states have (on average 1.649269311064718) internal successors, (790), 751 states have internal predecessors, (790), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:08:09,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 796 transitions. [2025-02-06 12:08:09,509 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 796 transitions. Word has length 58 [2025-02-06 12:08:09,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:09,509 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 796 transitions. [2025-02-06 12:08:09,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 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 12:08:09,509 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 796 transitions. [2025-02-06 12:08:09,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-06 12:08:09,510 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:09,510 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:09,520 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 12:08:09,710 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 12:08:09,711 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr329REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:08:09,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:09,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1218120369, now seen corresponding path program 1 times [2025-02-06 12:08:09,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:09,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276205387] [2025-02-06 12:08:09,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:09,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:09,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:09,715 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 12:08:09,716 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 12:08:09,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 12:08:09,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 12:08:09,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:09,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:09,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:08:09,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:09,922 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 12:08:09,935 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 12:08:09,968 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 12:08:09,978 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 12:08:09,978 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:09,978 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:09,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276205387] [2025-02-06 12:08:09,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276205387] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:09,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:09,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:09,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934339221] [2025-02-06 12:08:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:09,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:08:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:09,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:08:09,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:09,979 INFO L87 Difference]: Start difference. First operand 756 states and 796 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:11,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:11,295 INFO L93 Difference]: Finished difference Result 755 states and 795 transitions. [2025-02-06 12:08:11,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:08:11,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-02-06 12:08:11,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:11,297 INFO L225 Difference]: With dead ends: 755 [2025-02-06 12:08:11,297 INFO L226 Difference]: Without dead ends: 755 [2025-02-06 12:08:11,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 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 12:08:11,298 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 2 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:11,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1755 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 12:08:11,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2025-02-06 12:08:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 755. [2025-02-06 12:08:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 479 states have (on average 1.6471816283924843) internal successors, (789), 750 states have internal predecessors, (789), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:08:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 795 transitions. [2025-02-06 12:08:11,305 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 795 transitions. Word has length 63 [2025-02-06 12:08:11,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:11,305 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 795 transitions. [2025-02-06 12:08:11,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 795 transitions. [2025-02-06 12:08:11,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-06 12:08:11,306 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:11,306 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:11,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 12:08:11,506 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 12:08:11,506 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:08:11,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1218120370, now seen corresponding path program 1 times [2025-02-06 12:08:11,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:11,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479434912] [2025-02-06 12:08:11,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:11,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:11,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:11,509 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 12:08:11,510 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 12:08:11,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 12:08:11,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 12:08:11,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:11,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:11,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 12:08:11,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:11,704 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 12:08:11,726 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 12:08:11,738 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 12:08:11,791 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 12:08:11,813 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 12:08:11,814 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:11,814 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479434912] [2025-02-06 12:08:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479434912] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:11,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:11,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6433386] [2025-02-06 12:08:11,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:11,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:08:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:11,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:08:11,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:11,816 INFO L87 Difference]: Start difference. First operand 755 states and 795 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:13,883 INFO L93 Difference]: Finished difference Result 754 states and 794 transitions. [2025-02-06 12:08:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:08:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-02-06 12:08:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:13,886 INFO L225 Difference]: With dead ends: 754 [2025-02-06 12:08:13,886 INFO L226 Difference]: Without dead ends: 754 [2025-02-06 12:08:13,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:08:13,887 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 1 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:13,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1780 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:08:13,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2025-02-06 12:08:13,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2025-02-06 12:08:13,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 478 states have (on average 1.6485355648535565) internal successors, (788), 749 states have internal predecessors, (788), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:08:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 794 transitions. [2025-02-06 12:08:13,897 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 794 transitions. Word has length 63 [2025-02-06 12:08:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:13,897 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 794 transitions. [2025-02-06 12:08:13,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:13,897 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 794 transitions. [2025-02-06 12:08:13,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-06 12:08:13,898 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:13,898 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:13,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 12:08:14,098 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 12:08:14,099 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:08:14,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash -423937458, now seen corresponding path program 1 times [2025-02-06 12:08:14,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:14,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551074211] [2025-02-06 12:08:14,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:14,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:14,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:14,103 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 12:08:14,104 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 12:08:14,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-06 12:08:14,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 12:08:14,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:14,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:14,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:08:14,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:14,303 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 12:08:14,366 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 12:08:14,375 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 12:08:14,376 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:14,376 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:14,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551074211] [2025-02-06 12:08:14,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551074211] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:14,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:14,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:08:14,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016761440] [2025-02-06 12:08:14,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:14,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:08:14,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:14,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:08:14,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:08:14,378 INFO L87 Difference]: Start difference. First operand 754 states and 794 transitions. Second operand has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 12:08:15,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:15,990 INFO L93 Difference]: Finished difference Result 766 states and 809 transitions. [2025-02-06 12:08:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:08:15,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 71 [2025-02-06 12:08:15,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:15,994 INFO L225 Difference]: With dead ends: 766 [2025-02-06 12:08:15,994 INFO L226 Difference]: Without dead ends: 766 [2025-02-06 12:08:15,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 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 12:08:15,994 INFO L435 NwaCegarLoop]: 686 mSDtfsCounter, 6 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:15,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2453 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-06 12:08:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2025-02-06 12:08:16,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 760. [2025-02-06 12:08:16,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 483 states have (on average 1.6459627329192548) internal successors, (795), 754 states have internal predecessors, (795), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 12:08:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 804 transitions. [2025-02-06 12:08:16,011 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 804 transitions. Word has length 71 [2025-02-06 12:08:16,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:16,012 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 804 transitions. [2025-02-06 12:08:16,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 12:08:16,012 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 804 transitions. [2025-02-06 12:08:16,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-06 12:08:16,013 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:16,013 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:16,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 12:08:16,213 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 12:08:16,214 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:08:16,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:16,214 INFO L85 PathProgramCache]: Analyzing trace with hash -423937457, now seen corresponding path program 1 times [2025-02-06 12:08:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:16,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037910315] [2025-02-06 12:08:16,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:16,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:16,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:16,217 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 12:08:16,218 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 12:08:16,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-06 12:08:16,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 12:08:16,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:16,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:16,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:08:16,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:16,410 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 12:08:16,410 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:16,410 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:16,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037910315] [2025-02-06 12:08:16,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037910315] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:16,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:16,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:16,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762239458] [2025-02-06 12:08:16,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:16,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:16,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:16,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:16,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:16,411 INFO L87 Difference]: Start difference. First operand 760 states and 804 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 12:08:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:16,440 INFO L93 Difference]: Finished difference Result 757 states and 798 transitions. [2025-02-06 12:08:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:16,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 71 [2025-02-06 12:08:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:16,444 INFO L225 Difference]: With dead ends: 757 [2025-02-06 12:08:16,444 INFO L226 Difference]: Without dead ends: 757 [2025-02-06 12:08:16,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 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 12:08:16,446 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 0 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:16,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2077 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:08:16,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2025-02-06 12:08:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 757. [2025-02-06 12:08:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 480 states have (on average 1.6479166666666667) internal successors, (791), 752 states have internal predecessors, (791), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:08:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 798 transitions. [2025-02-06 12:08:16,458 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 798 transitions. Word has length 71 [2025-02-06 12:08:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:16,458 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 798 transitions. [2025-02-06 12:08:16,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 12:08:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 798 transitions. [2025-02-06 12:08:16,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-06 12:08:16,459 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:16,460 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:16,470 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 12:08:16,660 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 12:08:16,660 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:08:16,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:16,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2075687700, now seen corresponding path program 1 times [2025-02-06 12:08:16,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:16,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169667784] [2025-02-06 12:08:16,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:16,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:16,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:16,665 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 12:08:16,674 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 12:08:16,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-06 12:08:16,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-06 12:08:16,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:16,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:16,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:08:16,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:16,881 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 12:08:16,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:08:16,934 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 12:08:16,934 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169667784] [2025-02-06 12:08:16,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169667784] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:08:16,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:08:16,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 12:08:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943010319] [2025-02-06 12:08:16,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:08:16,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:08:16,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:16,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:08:16,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:08:16,935 INFO L87 Difference]: Start difference. First operand 757 states and 798 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 12:08:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:17,054 INFO L93 Difference]: Finished difference Result 769 states and 815 transitions. [2025-02-06 12:08:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:08:17,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 72 [2025-02-06 12:08:17,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:17,057 INFO L225 Difference]: With dead ends: 769 [2025-02-06 12:08:17,058 INFO L226 Difference]: Without dead ends: 769 [2025-02-06 12:08:17,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 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 12:08:17,059 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 6 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:17,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3456 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:08:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2025-02-06 12:08:17,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 767. [2025-02-06 12:08:17,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 489 states have (on average 1.6482617586912065) internal successors, (806), 761 states have internal predecessors, (806), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:08:17,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 813 transitions. [2025-02-06 12:08:17,069 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 813 transitions. Word has length 72 [2025-02-06 12:08:17,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:17,070 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 813 transitions. [2025-02-06 12:08:17,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 12:08:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 813 transitions. [2025-02-06 12:08:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 12:08:17,071 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:17,071 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:17,083 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 12:08:17,271 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 12:08:17,271 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:08:17,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:17,272 INFO L85 PathProgramCache]: Analyzing trace with hash 214430158, now seen corresponding path program 2 times [2025-02-06 12:08:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:17,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028788454] [2025-02-06 12:08:17,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:08:17,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:17,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:17,278 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 12:08:17,283 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 12:08:17,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-02-06 12:08:30,711 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 12:08:30,711 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:08:30,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:30,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 12:08:30,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:30,795 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:08:30,795 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 12:08:30,808 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 12:08:30,942 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:08:30,942 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 12:08:30,971 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 12:08:30,986 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 12:08:30,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:08:31,046 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-06 12:08:31,047 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 12:08:31,091 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:31,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028788454] [2025-02-06 12:08:31,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028788454] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:08:31,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1195184573] [2025-02-06 12:08:31,092 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:08:31,092 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:08:31,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:08:31,111 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 12:08:31,112 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 12:08:31,278 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-02-06 12:08:31,673 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 12:08:31,673 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:08:31,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:31,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:08:31,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:31,803 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 12:08:31,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:08:32,021 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 12:08:32,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1195184573] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:08:32,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:08:32,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-02-06 12:08:32,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838916872] [2025-02-06 12:08:32,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:08:32,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 12:08:32,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:32,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 12:08:32,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=553, Unknown=6, NotChecked=0, Total=650 [2025-02-06 12:08:32,023 INFO L87 Difference]: Start difference. First operand 767 states and 813 transitions. Second operand has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 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 12:08:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:36,738 INFO L93 Difference]: Finished difference Result 783 states and 836 transitions. [2025-02-06 12:08:36,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-06 12:08:36,738 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 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 75 [2025-02-06 12:08:36,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:36,740 INFO L225 Difference]: With dead ends: 783 [2025-02-06 12:08:36,740 INFO L226 Difference]: Without dead ends: 779 [2025-02-06 12:08:36,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=416, Invalid=2333, Unknown=7, NotChecked=0, Total=2756 [2025-02-06 12:08:36,741 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 470 mSDsluCounter, 5236 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 5700 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:36,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 5700 Invalid, 3817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2025-02-06 12:08:36,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2025-02-06 12:08:36,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 775. [2025-02-06 12:08:36,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 498 states have (on average 1.640562248995984) internal successors, (817), 769 states have internal predecessors, (817), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:08:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 824 transitions. [2025-02-06 12:08:36,749 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 824 transitions. Word has length 75 [2025-02-06 12:08:36,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:36,750 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 824 transitions. [2025-02-06 12:08:36,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 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 12:08:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 824 transitions. [2025-02-06 12:08:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-02-06 12:08:36,751 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:36,751 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:36,759 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 12:08:36,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 12:08:37,151 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 12:08:37,152 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:08:37,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:37,152 INFO L85 PathProgramCache]: Analyzing trace with hash -494502641, now seen corresponding path program 1 times [2025-02-06 12:08:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:37,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118965367] [2025-02-06 12:08:37,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:37,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:37,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:37,157 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 12:08:37,158 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 12:08:37,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-06 12:08:37,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-06 12:08:37,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:37,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:37,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 12:08:37,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:37,504 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 12:08:37,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:08:37,926 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 12:08:37,926 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:37,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118965367] [2025-02-06 12:08:37,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118965367] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:08:37,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:08:37,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-06 12:08:37,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194873130] [2025-02-06 12:08:37,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:08:37,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 12:08:37,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:37,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 12:08:37,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-06 12:08:37,928 INFO L87 Difference]: Start difference. First operand 775 states and 824 transitions. Second operand has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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 12:08:39,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:39,118 INFO L93 Difference]: Finished difference Result 799 states and 863 transitions. [2025-02-06 12:08:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 12:08:39,118 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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 81 [2025-02-06 12:08:39,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:39,120 INFO L225 Difference]: With dead ends: 799 [2025-02-06 12:08:39,120 INFO L226 Difference]: Without dead ends: 793 [2025-02-06 12:08:39,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 12:08:39,121 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 25 mSDsluCounter, 7603 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8297 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:39,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 8297 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 12:08:39,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2025-02-06 12:08:39,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2025-02-06 12:08:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 516 states have (on average 1.627906976744186) internal successors, (840), 787 states have internal predecessors, (840), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:08:39,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 847 transitions. [2025-02-06 12:08:39,135 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 847 transitions. Word has length 81 [2025-02-06 12:08:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:39,135 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 847 transitions. [2025-02-06 12:08:39,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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 12:08:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 847 transitions. [2025-02-06 12:08:39,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 12:08:39,136 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:39,136 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:39,153 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 12:08:39,336 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 12:08:39,336 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-02-06 12:08:39,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:39,337 INFO L85 PathProgramCache]: Analyzing trace with hash 461849487, now seen corresponding path program 2 times [2025-02-06 12:08:39,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:39,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551405299] [2025-02-06 12:08:39,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:08:39,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:39,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:39,339 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 12:08:39,340 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 12:08:39,478 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-02-06 12:08:53,087 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 12:08:53,087 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:08:53,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:53,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-02-06 12:08:53,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:53,193 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 12:08:53,203 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:08:53,203 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 12:08:53,224 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 12:08:53,233 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 12:08:53,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-02-06 12:08:53,302 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 12:08:53,682 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:08:53,683 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 12:08:53,695 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 12:08:53,731 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 12:08:53,737 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 12:08:53,752 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 12:08:53,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:08:54,198 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:54,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551405299] [2025-02-06 12:08:54,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551405299] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:08:54,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [909510951] [2025-02-06 12:08:54,198 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:08:54,198 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:08:54,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:08:54,200 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 12:08:54,201 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 12:08:54,430 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-02-06 12:08:54,935 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 12:08:54,935 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:08:54,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:54,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 12:08:54,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:55,581 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 12:08:55,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:08:57,100 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 12:08:57,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [909510951] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:08:57,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:08:57,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-02-06 12:08:57,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367772779] [2025-02-06 12:08:57,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:08:57,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-06 12:08:57,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:57,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-06 12:08:57,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2953, Unknown=7, NotChecked=0, Total=3660 [2025-02-06 12:08:57,104 INFO L87 Difference]: Start difference. First operand 793 states and 847 transitions. Second operand has 58 states, 57 states have (on average 3.0701754385964914) internal successors, (175), 58 states have internal predecessors, (175), 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)