./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:01:05,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:01:05,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:01:05,952 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:01:05,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:01:05,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:01:05,967 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:01:05,967 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:01:05,967 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:01:05,967 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:01:05,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:01:05,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:01:05,968 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:01:05,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:01:05,968 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:01:05,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:01:05,968 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:01:05,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:01:05,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:01:05,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:01:05,968 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:01:05,969 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:01:05,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:01:05,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:01:05,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:01:05,970 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:01:05,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:01:05,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:01:05,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:01:05,970 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:01:05,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:01:05,970 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 -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2025-02-08 08:01:06,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:01:06,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:01:06,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:01:06,227 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:01:06,227 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:01:06,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.i [2025-02-08 08:01:07,420 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/735004969/1cf3ec4cef524fe59e08ce0e148350b9/FLAG40c4495f0 [2025-02-08 08:01:07,707 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:01:07,708 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.i [2025-02-08 08:01:07,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/735004969/1cf3ec4cef524fe59e08ce0e148350b9/FLAG40c4495f0 [2025-02-08 08:01:07,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/735004969/1cf3ec4cef524fe59e08ce0e148350b9 [2025-02-08 08:01:07,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:01:07,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:01:07,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:01:07,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:01:07,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:01:07,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:01:07" (1/1) ... [2025-02-08 08:01:07,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c3981a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:07, skipping insertion in model container [2025-02-08 08:01:07,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:01:07" (1/1) ... [2025-02-08 08:01:07,827 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:01:08,294 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,328 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,330 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,336 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,342 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,373 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,376 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,378 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,379 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,380 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,382 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,383 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,383 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,384 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,387 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:08,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:01:08,399 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-08 08:01:08,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5426a4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:08, skipping insertion in model container [2025-02-08 08:01:08,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:01:08,400 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-08 08:01:08,401 INFO L158 Benchmark]: Toolchain (without parser) took 652.78ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 90.0MB in the end (delta: 19.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:01:08,401 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:01:08,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 644.47ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 90.0MB in the end (delta: 19.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:01:08,402 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 644.47ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 90.0MB in the end (delta: 19.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 831]: 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_SAX_nondet_test2-2.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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:01:10,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:01:10,261 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 08:01:10,265 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:01:10,265 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:01:10,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:01:10,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:01:10,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:01:10,306 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:01:10,306 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:01:10,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:01:10,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:01:10,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:01:10,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:01:10,307 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:01:10,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:01:10,307 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:01:10,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:01:10,308 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:01:10,308 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:01:10,308 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:01:10,308 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:01:10,308 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:01:10,308 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:01:10,308 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:01:10,308 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 08:01:10,308 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 08:01:10,308 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:01:10,308 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:01:10,309 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:01:10,309 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:01:10,309 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:01:10,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:01:10,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:01:10,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:01:10,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:01:10,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:01:10,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:01:10,310 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 08:01:10,310 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 08:01:10,310 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:01:10,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:01:10,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:01:10,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:01:10,311 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 -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2025-02-08 08:01:10,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:01:10,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:01:10,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:01:10,564 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:01:10,566 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:01:10,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.i [2025-02-08 08:01:11,756 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7bd268a3d/2b8ec653a54d4e07858abbd7bb8f3451/FLAGaa27ad154 [2025-02-08 08:01:12,014 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:01:12,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.i [2025-02-08 08:01:12,031 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7bd268a3d/2b8ec653a54d4e07858abbd7bb8f3451/FLAGaa27ad154 [2025-02-08 08:01:12,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7bd268a3d/2b8ec653a54d4e07858abbd7bb8f3451 [2025-02-08 08:01:12,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:01:12,307 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:01:12,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:01:12,308 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:01:12,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:01:12,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:01:12" (1/1) ... [2025-02-08 08:01:12,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74085153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:12, skipping insertion in model container [2025-02-08 08:01:12,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:01:12" (1/1) ... [2025-02-08 08:01:12,384 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:01:12,761 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,793 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,797 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,800 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,807 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,838 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,838 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,840 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,840 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,841 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,844 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,845 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,848 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,849 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,855 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:01:12,883 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-08 08:01:12,902 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:01:12,924 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,932 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,933 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,935 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,938 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,951 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,951 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,952 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,953 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,953 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,955 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,956 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,956 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,957 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,959 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:12,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:01:12,964 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:01:13,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:01:13,088 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:01:13,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13 WrapperNode [2025-02-08 08:01:13,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:01:13,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:01:13,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:01:13,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:01:13,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,176 INFO L138 Inliner]: procedures = 210, calls = 273, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1014 [2025-02-08 08:01:13,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:01:13,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:01:13,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:01:13,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:01:13,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,217 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,272 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-02-08 08:01:13,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,305 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:01:13,324 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:01:13,324 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:01:13,324 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:01:13,325 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (1/1) ... [2025-02-08 08:01:13,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:01:13,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:13,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:01:13,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:01:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 08:01:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 08:01:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-08 08:01:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 08:01:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 08:01:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-08 08:01:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 08:01:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 08:01:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 08:01:13,372 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 08:01:13,372 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 08:01:13,372 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 08:01:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 08:01:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 08:01:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 08:01:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 08:01:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:01:13,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:01:13,556 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:01:13,557 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:01:15,894 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L812: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-08 08:01:15,977 INFO L? ?]: Removed 1086 outVars from TransFormulas that were not future-live. [2025-02-08 08:01:15,977 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:01:16,003 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:01:16,004 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:01:16,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:01:16 BoogieIcfgContainer [2025-02-08 08:01:16,004 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:01:16,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:01:16,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:01:16,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:01:16,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:01:12" (1/3) ... [2025-02-08 08:01:16,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1a8b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:01:16, skipping insertion in model container [2025-02-08 08:01:16,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:13" (2/3) ... [2025-02-08 08:01:16,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1a8b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:01:16, skipping insertion in model container [2025-02-08 08:01:16,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:01:16" (3/3) ... [2025-02-08 08:01:16,010 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test2-2.i [2025-02-08 08:01:16,020 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:01:16,022 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_nondet_test2-2.i that has 4 procedures, 1079 locations, 1 initial locations, 38 loop locations, and 525 error locations. [2025-02-08 08:01:16,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:01:16,062 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;@7023da07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:01:16,062 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2025-02-08 08:01:16,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 1069 states, 542 states have (on average 2.1863468634686347) internal successors, (1185), 1064 states have internal predecessors, (1185), 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) [2025-02-08 08:01:16,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 08:01:16,069 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:16,070 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 08:01:16,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:16,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:16,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1222348, now seen corresponding path program 1 times [2025-02-08 08:01:16,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:16,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738708487] [2025-02-08 08:01:16,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:16,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:16,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:16,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:16,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:01:16,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:01:16,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:01:16,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:16,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:16,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:16,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:16,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:01:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:16,291 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:16,291 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:16,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738708487] [2025-02-08 08:01:16,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738708487] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:16,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:16,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:01:16,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073244179] [2025-02-08 08:01:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:16,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:01:16,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:16,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:01:16,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:16,331 INFO L87 Difference]: Start difference. First operand has 1069 states, 542 states have (on average 2.1863468634686347) internal successors, (1185), 1064 states have internal predecessors, (1185), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:17,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:17,700 INFO L93 Difference]: Finished difference Result 1237 states and 1305 transitions. [2025-02-08 08:01:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:01:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2025-02-08 08:01:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:17,714 INFO L225 Difference]: With dead ends: 1237 [2025-02-08 08:01:17,714 INFO L226 Difference]: Without dead ends: 1235 [2025-02-08 08:01:17,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:17,719 INFO L435 NwaCegarLoop]: 641 mSDtfsCounter, 979 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:17,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 791 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 08:01:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2025-02-08 08:01:17,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1054. [2025-02-08 08:01:17,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 544 states have (on average 2.0349264705882355) internal successors, (1107), 1049 states have internal predecessors, (1107), 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) [2025-02-08 08:01:17,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1113 transitions. [2025-02-08 08:01:17,775 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1113 transitions. Word has length 3 [2025-02-08 08:01:17,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:17,776 INFO L471 AbstractCegarLoop]: Abstraction has 1054 states and 1113 transitions. [2025-02-08 08:01:17,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:17,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1113 transitions. [2025-02-08 08:01:17,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 08:01:17,776 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:17,776 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 08:01:17,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 08:01:17,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:17,981 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr524REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:17,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1222349, now seen corresponding path program 1 times [2025-02-08 08:01:17,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:17,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640866867] [2025-02-08 08:01:17,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:17,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:17,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:17,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:17,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:01:18,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:01:18,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:01:18,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:18,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:18,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:01:18,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:18,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:18,110 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:18,110 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640866867] [2025-02-08 08:01:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640866867] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:18,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:18,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:01:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237203179] [2025-02-08 08:01:18,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:18,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:01:18,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:18,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:01:18,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:18,112 INFO L87 Difference]: Start difference. First operand 1054 states and 1113 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:19,652 INFO L93 Difference]: Finished difference Result 1472 states and 1563 transitions. [2025-02-08 08:01:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:01:19,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2025-02-08 08:01:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:19,656 INFO L225 Difference]: With dead ends: 1472 [2025-02-08 08:01:19,656 INFO L226 Difference]: Without dead ends: 1472 [2025-02-08 08:01:19,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:19,657 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 450 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:19,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1502 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-08 08:01:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2025-02-08 08:01:19,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1184. [2025-02-08 08:01:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 675 states have (on average 1.9866666666666666) internal successors, (1341), 1179 states have internal predecessors, (1341), 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) [2025-02-08 08:01:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1347 transitions. [2025-02-08 08:01:19,696 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1347 transitions. Word has length 3 [2025-02-08 08:01:19,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:19,696 INFO L471 AbstractCegarLoop]: Abstraction has 1184 states and 1347 transitions. [2025-02-08 08:01:19,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:19,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1347 transitions. [2025-02-08 08:01:19,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 08:01:19,696 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:19,697 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 08:01:19,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 08:01:19,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:19,897 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:19,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:19,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1221137, now seen corresponding path program 1 times [2025-02-08 08:01:19,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:19,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679852977] [2025-02-08 08:01:19,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:19,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:19,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:19,901 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:19,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:01:19,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:01:19,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:01:19,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:19,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:19,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:01:19,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:20,014 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48| (_ bv0 1))))) is different from true [2025-02-08 08:01:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:20,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:20,014 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:20,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679852977] [2025-02-08 08:01:20,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679852977] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:20,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:20,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:20,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818343665] [2025-02-08 08:01:20,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:20,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:20,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:20,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:20,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:01:20,015 INFO L87 Difference]: Start difference. First operand 1184 states and 1347 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:21,316 INFO L93 Difference]: Finished difference Result 1458 states and 1547 transitions. [2025-02-08 08:01:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:21,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2025-02-08 08:01:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:21,320 INFO L225 Difference]: With dead ends: 1458 [2025-02-08 08:01:21,320 INFO L226 Difference]: Without dead ends: 1457 [2025-02-08 08:01:21,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:01:21,321 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 433 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1537 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:21,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1501 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 711 Invalid, 0 Unknown, 1537 Unchecked, 1.3s Time] [2025-02-08 08:01:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2025-02-08 08:01:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1184. [2025-02-08 08:01:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 675 states have (on average 1.9851851851851852) internal successors, (1340), 1179 states have internal predecessors, (1340), 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) [2025-02-08 08:01:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1346 transitions. [2025-02-08 08:01:21,340 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1346 transitions. Word has length 3 [2025-02-08 08:01:21,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:21,340 INFO L471 AbstractCegarLoop]: Abstraction has 1184 states and 1346 transitions. [2025-02-08 08:01:21,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1346 transitions. [2025-02-08 08:01:21,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 08:01:21,340 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:21,340 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:21,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:21,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:21,542 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:21,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash 501701979, now seen corresponding path program 1 times [2025-02-08 08:01:21,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:21,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44858670] [2025-02-08 08:01:21,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:21,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:21,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:21,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:21,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 08:01:21,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:01:21,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:01:21,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:21,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:21,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:01:21,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:21,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:21,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 08:01:21,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 08:01:21,730 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 08:01:21,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 08:01:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:21,744 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:21,744 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:21,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44858670] [2025-02-08 08:01:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44858670] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:21,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:21,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:21,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605596563] [2025-02-08 08:01:21,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:21,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:21,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:21,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:21,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:21,745 INFO L87 Difference]: Start difference. First operand 1184 states and 1346 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:23,585 INFO L93 Difference]: Finished difference Result 1354 states and 1524 transitions. [2025-02-08 08:01:23,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:23,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 08:01:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:23,589 INFO L225 Difference]: With dead ends: 1354 [2025-02-08 08:01:23,589 INFO L226 Difference]: Without dead ends: 1354 [2025-02-08 08:01:23,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:23,591 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 2233 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:23,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2236 Valid, 457 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-08 08:01:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2025-02-08 08:01:23,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1042. [2025-02-08 08:01:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 544 states have (on average 2.0091911764705883) internal successors, (1093), 1037 states have internal predecessors, (1093), 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) [2025-02-08 08:01:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1099 transitions. [2025-02-08 08:01:23,609 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1099 transitions. Word has length 8 [2025-02-08 08:01:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:23,610 INFO L471 AbstractCegarLoop]: Abstraction has 1042 states and 1099 transitions. [2025-02-08 08:01:23,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1099 transitions. [2025-02-08 08:01:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 08:01:23,611 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:23,611 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:23,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 08:01:23,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:23,815 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:23,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:23,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1627106718, now seen corresponding path program 1 times [2025-02-08 08:01:23,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:23,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530251673] [2025-02-08 08:01:23,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:23,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:23,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:23,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:23,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:01:23,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 08:01:23,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 08:01:23,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:23,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:23,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:23,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:23,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:01:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:23,933 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:23,933 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:23,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530251673] [2025-02-08 08:01:23,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530251673] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:23,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:23,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:23,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763288662] [2025-02-08 08:01:23,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:23,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:01:23,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:23,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:01:23,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:23,934 INFO L87 Difference]: Start difference. First operand 1042 states and 1099 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:24,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:24,995 INFO L93 Difference]: Finished difference Result 1212 states and 1290 transitions. [2025-02-08 08:01:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:01:24,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 08:01:24,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:25,000 INFO L225 Difference]: With dead ends: 1212 [2025-02-08 08:01:25,000 INFO L226 Difference]: Without dead ends: 1212 [2025-02-08 08:01:25,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:25,003 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 758 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:25,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1139 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-08 08:01:25,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2025-02-08 08:01:25,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 995. [2025-02-08 08:01:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 544 states have (on average 1.9227941176470589) internal successors, (1046), 990 states have internal predecessors, (1046), 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) [2025-02-08 08:01:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1052 transitions. [2025-02-08 08:01:25,045 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1052 transitions. Word has length 9 [2025-02-08 08:01:25,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:25,046 INFO L471 AbstractCegarLoop]: Abstraction has 995 states and 1052 transitions. [2025-02-08 08:01:25,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1052 transitions. [2025-02-08 08:01:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 08:01:25,046 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:25,046 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:25,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 08:01:25,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:25,247 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:25,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1627106717, now seen corresponding path program 1 times [2025-02-08 08:01:25,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:25,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394973213] [2025-02-08 08:01:25,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:25,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:25,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:25,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:25,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:01:25,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 08:01:25,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 08:01:25,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:25,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:25,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:01:25,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:25,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:25,367 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:25,368 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:25,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394973213] [2025-02-08 08:01:25,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394973213] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:25,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:25,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:25,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63714025] [2025-02-08 08:01:25,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:25,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:01:25,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:25,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:01:25,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:25,369 INFO L87 Difference]: Start difference. First operand 995 states and 1052 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:26,682 INFO L93 Difference]: Finished difference Result 1290 states and 1371 transitions. [2025-02-08 08:01:26,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:01:26,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 08:01:26,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:26,691 INFO L225 Difference]: With dead ends: 1290 [2025-02-08 08:01:26,691 INFO L226 Difference]: Without dead ends: 1290 [2025-02-08 08:01:26,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:26,692 INFO L435 NwaCegarLoop]: 1058 mSDtfsCounter, 508 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:26,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1488 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 08:01:26,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2025-02-08 08:01:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1024. [2025-02-08 08:01:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 583 states have (on average 1.9073756432246998) internal successors, (1112), 1019 states have internal predecessors, (1112), 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) [2025-02-08 08:01:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1118 transitions. [2025-02-08 08:01:26,724 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1118 transitions. Word has length 9 [2025-02-08 08:01:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:26,725 INFO L471 AbstractCegarLoop]: Abstraction has 1024 states and 1118 transitions. [2025-02-08 08:01:26,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1118 transitions. [2025-02-08 08:01:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 08:01:26,725 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:26,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:26,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 08:01:26,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:26,926 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:26,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:26,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1480864940, now seen corresponding path program 1 times [2025-02-08 08:01:26,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:26,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317935922] [2025-02-08 08:01:26,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:26,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:26,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:26,928 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:26,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 08:01:27,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:01:27,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:01:27,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:27,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:27,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:27,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:27,092 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:27,092 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:27,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317935922] [2025-02-08 08:01:27,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317935922] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:27,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:27,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:27,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394421021] [2025-02-08 08:01:27,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:27,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:01:27,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:27,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:01:27,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:27,094 INFO L87 Difference]: Start difference. First operand 1024 states and 1118 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:27,270 INFO L93 Difference]: Finished difference Result 1466 states and 1615 transitions. [2025-02-08 08:01:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:01:27,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2025-02-08 08:01:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:27,274 INFO L225 Difference]: With dead ends: 1466 [2025-02-08 08:01:27,274 INFO L226 Difference]: Without dead ends: 1466 [2025-02-08 08:01:27,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:27,275 INFO L435 NwaCegarLoop]: 1104 mSDtfsCounter, 466 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:27,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 2053 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 08:01:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2025-02-08 08:01:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1199. [2025-02-08 08:01:27,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 758 states have (on average 1.8548812664907652) internal successors, (1406), 1194 states have internal predecessors, (1406), 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) [2025-02-08 08:01:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1412 transitions. [2025-02-08 08:01:27,289 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1412 transitions. Word has length 13 [2025-02-08 08:01:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:27,289 INFO L471 AbstractCegarLoop]: Abstraction has 1199 states and 1412 transitions. [2025-02-08 08:01:27,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1412 transitions. [2025-02-08 08:01:27,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 08:01:27,290 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:27,290 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:27,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:27,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:27,491 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr193REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:27,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:27,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1260427403, now seen corresponding path program 1 times [2025-02-08 08:01:27,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:27,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524144292] [2025-02-08 08:01:27,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:27,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:27,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:27,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:27,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 08:01:27,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:01:27,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:01:27,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:27,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:27,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:27,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:27,612 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:27,612 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:27,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524144292] [2025-02-08 08:01:27,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524144292] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:27,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:27,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:01:27,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894439104] [2025-02-08 08:01:27,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:27,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:27,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:27,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:27,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:27,614 INFO L87 Difference]: Start difference. First operand 1199 states and 1412 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) [2025-02-08 08:01:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:28,814 INFO L93 Difference]: Finished difference Result 1365 states and 1564 transitions. [2025-02-08 08:01:28,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:28,814 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 [2025-02-08 08:01:28,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:28,817 INFO L225 Difference]: With dead ends: 1365 [2025-02-08 08:01:28,818 INFO L226 Difference]: Without dead ends: 1365 [2025-02-08 08:01:28,818 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 [2025-02-08 08:01:28,818 INFO L435 NwaCegarLoop]: 597 mSDtfsCounter, 975 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:28,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1243 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-08 08:01:28,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2025-02-08 08:01:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1176. [2025-02-08 08:01:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 758 states have (on average 1.7941952506596306) internal successors, (1360), 1171 states have internal predecessors, (1360), 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) [2025-02-08 08:01:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1366 transitions. [2025-02-08 08:01:28,851 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1366 transitions. Word has length 15 [2025-02-08 08:01:28,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:28,851 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1366 transitions. [2025-02-08 08:01:28,851 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) [2025-02-08 08:01:28,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1366 transitions. [2025-02-08 08:01:28,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 08:01:28,851 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:28,851 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:28,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 08:01:29,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:29,056 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr194REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:29,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:29,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1260427402, now seen corresponding path program 1 times [2025-02-08 08:01:29,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:29,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168840234] [2025-02-08 08:01:29,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:29,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:29,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:29,059 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:29,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 08:01:29,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:01:29,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:01:29,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:29,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:29,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:01:29,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:29,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:29,267 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:29,267 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:29,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168840234] [2025-02-08 08:01:29,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168840234] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:29,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:29,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:29,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78060065] [2025-02-08 08:01:29,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:29,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:29,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:29,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:29,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:29,268 INFO L87 Difference]: Start difference. First operand 1176 states and 1366 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2025-02-08 08:01:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:31,067 INFO L93 Difference]: Finished difference Result 1456 states and 1661 transitions. [2025-02-08 08:01:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:31,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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 [2025-02-08 08:01:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:31,071 INFO L225 Difference]: With dead ends: 1456 [2025-02-08 08:01:31,071 INFO L226 Difference]: Without dead ends: 1456 [2025-02-08 08:01:31,071 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 [2025-02-08 08:01:31,072 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 336 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:31,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1931 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-08 08:01:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2025-02-08 08:01:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1242. [2025-02-08 08:01:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 824 states have (on average 1.7475728155339805) internal successors, (1440), 1237 states have internal predecessors, (1440), 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) [2025-02-08 08:01:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1446 transitions. [2025-02-08 08:01:31,103 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1446 transitions. Word has length 15 [2025-02-08 08:01:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:31,103 INFO L471 AbstractCegarLoop]: Abstraction has 1242 states and 1446 transitions. [2025-02-08 08:01:31,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2025-02-08 08:01:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1446 transitions. [2025-02-08 08:01:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 08:01:31,104 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:31,104 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:31,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:31,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:31,305 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:31,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:31,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1477064433, now seen corresponding path program 1 times [2025-02-08 08:01:31,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:31,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975390455] [2025-02-08 08:01:31,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:31,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:31,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:31,307 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:31,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 08:01:31,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:01:31,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:01:31,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:31,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:31,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:01:31,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:31,503 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_49| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49|)))) is different from true [2025-02-08 08:01:31,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:31,504 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:31,504 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:31,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975390455] [2025-02-08 08:01:31,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975390455] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:31,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:31,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:31,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495312555] [2025-02-08 08:01:31,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:31,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:31,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:31,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:31,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:01:31,504 INFO L87 Difference]: Start difference. First operand 1242 states and 1446 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2025-02-08 08:01:32,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:32,417 INFO L93 Difference]: Finished difference Result 1438 states and 1641 transitions. [2025-02-08 08:01:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:32,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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 [2025-02-08 08:01:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:32,420 INFO L225 Difference]: With dead ends: 1438 [2025-02-08 08:01:32,420 INFO L226 Difference]: Without dead ends: 1437 [2025-02-08 08:01:32,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:01:32,422 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 266 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1290 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:32,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1478 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 550 Invalid, 0 Unknown, 1290 Unchecked, 0.9s Time] [2025-02-08 08:01:32,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2025-02-08 08:01:32,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1246. [2025-02-08 08:01:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 828 states have (on average 1.7439613526570048) internal successors, (1444), 1241 states have internal predecessors, (1444), 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) [2025-02-08 08:01:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1450 transitions. [2025-02-08 08:01:32,447 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1450 transitions. Word has length 15 [2025-02-08 08:01:32,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:32,447 INFO L471 AbstractCegarLoop]: Abstraction has 1246 states and 1450 transitions. [2025-02-08 08:01:32,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2025-02-08 08:01:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1450 transitions. [2025-02-08 08:01:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 08:01:32,448 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:32,448 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:32,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 08:01:32,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:32,649 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr170REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:32,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash -418588025, now seen corresponding path program 1 times [2025-02-08 08:01:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988422377] [2025-02-08 08:01:32,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:32,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:32,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:32,653 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:32,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 08:01:32,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:01:32,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:01:32,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:32,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:32,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:32,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:32,772 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:32,772 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:32,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988422377] [2025-02-08 08:01:32,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988422377] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:32,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:32,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:32,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570211916] [2025-02-08 08:01:32,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:32,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:32,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:32,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:32,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:32,772 INFO L87 Difference]: Start difference. First operand 1246 states and 1450 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:32,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:32,833 INFO L93 Difference]: Finished difference Result 1168 states and 1329 transitions. [2025-02-08 08:01:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:01:32,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2025-02-08 08:01:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:32,835 INFO L225 Difference]: With dead ends: 1168 [2025-02-08 08:01:32,835 INFO L226 Difference]: Without dead ends: 1168 [2025-02-08 08:01:32,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:32,835 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 45 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:32,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2770 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:01:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2025-02-08 08:01:32,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2025-02-08 08:01:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 769 states have (on average 1.7204161248374512) internal successors, (1323), 1163 states have internal predecessors, (1323), 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) [2025-02-08 08:01:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1329 transitions. [2025-02-08 08:01:32,845 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1329 transitions. Word has length 16 [2025-02-08 08:01:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:32,845 INFO L471 AbstractCegarLoop]: Abstraction has 1168 states and 1329 transitions. [2025-02-08 08:01:32,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1329 transitions. [2025-02-08 08:01:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 08:01:32,846 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:32,846 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:32,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 08:01:33,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:33,047 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:33,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1455854388, now seen corresponding path program 1 times [2025-02-08 08:01:33,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:33,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771207114] [2025-02-08 08:01:33,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:33,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:33,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:33,050 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:33,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 08:01:33,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:01:33,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:01:33,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:33,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:33,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:01:33,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:33,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:33,239 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:33,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771207114] [2025-02-08 08:01:33,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771207114] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:33,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:33,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:01:33,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316121839] [2025-02-08 08:01:33,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:33,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:33,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:33,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:33,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:33,241 INFO L87 Difference]: Start difference. First operand 1168 states and 1329 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:33,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:33,571 INFO L93 Difference]: Finished difference Result 1395 states and 1533 transitions. [2025-02-08 08:01:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:33,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2025-02-08 08:01:33,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:33,574 INFO L225 Difference]: With dead ends: 1395 [2025-02-08 08:01:33,574 INFO L226 Difference]: Without dead ends: 1391 [2025-02-08 08:01:33,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:33,575 INFO L435 NwaCegarLoop]: 1026 mSDtfsCounter, 386 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:33,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 2813 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 08:01:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2025-02-08 08:01:33,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1166. [2025-02-08 08:01:33,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 767 states have (on average 1.7209908735332464) internal successors, (1320), 1161 states have internal predecessors, (1320), 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) [2025-02-08 08:01:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1326 transitions. [2025-02-08 08:01:33,601 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1326 transitions. Word has length 16 [2025-02-08 08:01:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:33,605 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 1326 transitions. [2025-02-08 08:01:33,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1326 transitions. [2025-02-08 08:01:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 08:01:33,607 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:33,607 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:33,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:33,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:33,808 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:33,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash -58392171, now seen corresponding path program 1 times [2025-02-08 08:01:33,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:33,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947562260] [2025-02-08 08:01:33,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:33,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:33,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:33,816 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:33,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 08:01:33,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:01:33,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:01:33,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:33,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:33,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:01:33,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:33,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:01:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:33,964 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:33,964 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:33,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947562260] [2025-02-08 08:01:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947562260] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:33,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:01:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133604035] [2025-02-08 08:01:33,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:33,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:33,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:33,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:33,965 INFO L87 Difference]: Start difference. First operand 1166 states and 1326 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:35,183 INFO L93 Difference]: Finished difference Result 1154 states and 1290 transitions. [2025-02-08 08:01:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:35,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-02-08 08:01:35,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:35,187 INFO L225 Difference]: With dead ends: 1154 [2025-02-08 08:01:35,187 INFO L226 Difference]: Without dead ends: 1154 [2025-02-08 08:01:35,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:35,188 INFO L435 NwaCegarLoop]: 643 mSDtfsCounter, 722 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:35,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1277 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-08 08:01:35,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2025-02-08 08:01:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1143. [2025-02-08 08:01:35,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 767 states have (on average 1.6610169491525424) internal successors, (1274), 1138 states have internal predecessors, (1274), 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) [2025-02-08 08:01:35,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1280 transitions. [2025-02-08 08:01:35,197 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1280 transitions. Word has length 19 [2025-02-08 08:01:35,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:35,198 INFO L471 AbstractCegarLoop]: Abstraction has 1143 states and 1280 transitions. [2025-02-08 08:01:35,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:35,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1280 transitions. [2025-02-08 08:01:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 08:01:35,199 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:35,199 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:35,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 08:01:35,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:35,399 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:35,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:35,400 INFO L85 PathProgramCache]: Analyzing trace with hash -58392170, now seen corresponding path program 1 times [2025-02-08 08:01:35,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:35,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622203543] [2025-02-08 08:01:35,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:35,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:35,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:35,408 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:35,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 08:01:35,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:01:35,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:01:35,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:35,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:35,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:01:35,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:35,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:35,598 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:35,598 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:35,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622203543] [2025-02-08 08:01:35,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622203543] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:35,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:35,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:01:35,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310732549] [2025-02-08 08:01:35,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:35,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:35,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:35,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:35,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:35,599 INFO L87 Difference]: Start difference. First operand 1143 states and 1280 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:37,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:37,109 INFO L93 Difference]: Finished difference Result 1531 states and 1681 transitions. [2025-02-08 08:01:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:37,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-02-08 08:01:37,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:37,112 INFO L225 Difference]: With dead ends: 1531 [2025-02-08 08:01:37,112 INFO L226 Difference]: Without dead ends: 1531 [2025-02-08 08:01:37,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:37,113 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 545 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:37,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 2014 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-08 08:01:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2025-02-08 08:01:37,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1257. [2025-02-08 08:01:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 881 states have (on average 1.6027241770715097) internal successors, (1412), 1252 states have internal predecessors, (1412), 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) [2025-02-08 08:01:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1418 transitions. [2025-02-08 08:01:37,125 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1418 transitions. Word has length 19 [2025-02-08 08:01:37,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:37,125 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1418 transitions. [2025-02-08 08:01:37,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:37,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1418 transitions. [2025-02-08 08:01:37,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-08 08:01:37,128 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:37,128 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:37,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 08:01:37,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:37,328 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:37,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:37,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2125473735, now seen corresponding path program 1 times [2025-02-08 08:01:37,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:37,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464288910] [2025-02-08 08:01:37,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:37,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:37,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:37,331 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:37,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 08:01:37,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 08:01:37,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 08:01:37,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:37,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:37,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:01:37,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:37,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:37,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:01:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:37,988 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:37,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464288910] [2025-02-08 08:01:37,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464288910] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:01:37,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:01:37,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 08:01:37,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451890601] [2025-02-08 08:01:37,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:01:37,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:01:37,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:37,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:01:37,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:01:37,990 INFO L87 Difference]: Start difference. First operand 1257 states and 1418 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:42,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:42,677 INFO L93 Difference]: Finished difference Result 1887 states and 2171 transitions. [2025-02-08 08:01:42,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:01:42,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 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 38 [2025-02-08 08:01:42,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:42,690 INFO L225 Difference]: With dead ends: 1887 [2025-02-08 08:01:42,690 INFO L226 Difference]: Without dead ends: 1887 [2025-02-08 08:01:42,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-08 08:01:42,690 INFO L435 NwaCegarLoop]: 1026 mSDtfsCounter, 1194 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:42,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 3138 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-02-08 08:01:42,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2025-02-08 08:01:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1421. [2025-02-08 08:01:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1045 states have (on average 1.5732057416267942) internal successors, (1644), 1416 states have internal predecessors, (1644), 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) [2025-02-08 08:01:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1650 transitions. [2025-02-08 08:01:42,701 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1650 transitions. Word has length 38 [2025-02-08 08:01:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:42,703 INFO L471 AbstractCegarLoop]: Abstraction has 1421 states and 1650 transitions. [2025-02-08 08:01:42,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:42,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1650 transitions. [2025-02-08 08:01:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-08 08:01:42,704 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:42,705 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] [2025-02-08 08:01:42,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:42,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:42,909 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr110ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:42,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:42,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1406543995, now seen corresponding path program 1 times [2025-02-08 08:01:42,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:42,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661148270] [2025-02-08 08:01:42,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:42,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:42,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:42,913 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:42,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 08:01:43,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-08 08:01:43,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-08 08:01:43,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:43,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:43,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:43,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:43,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:43,066 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:43,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661148270] [2025-02-08 08:01:43,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661148270] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:43,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:43,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:43,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127015510] [2025-02-08 08:01:43,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:43,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:43,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:43,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:43,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:43,067 INFO L87 Difference]: Start difference. First operand 1421 states and 1650 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) [2025-02-08 08:01:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:43,104 INFO L93 Difference]: Finished difference Result 1403 states and 1620 transitions. [2025-02-08 08:01:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:01:43,104 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 [2025-02-08 08:01:43,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:43,107 INFO L225 Difference]: With dead ends: 1403 [2025-02-08 08:01:43,107 INFO L226 Difference]: Without dead ends: 1403 [2025-02-08 08:01:43,107 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 [2025-02-08 08:01:43,107 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 27 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:43,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2693 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:01:43,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2025-02-08 08:01:43,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1403. [2025-02-08 08:01:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1027 states have (on average 1.5715676728334955) internal successors, (1614), 1398 states have internal predecessors, (1614), 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) [2025-02-08 08:01:43,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1620 transitions. [2025-02-08 08:01:43,117 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1620 transitions. Word has length 50 [2025-02-08 08:01:43,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:43,117 INFO L471 AbstractCegarLoop]: Abstraction has 1403 states and 1620 transitions. [2025-02-08 08:01:43,117 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) [2025-02-08 08:01:43,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1620 transitions. [2025-02-08 08:01:43,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-08 08:01:43,117 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:43,118 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:43,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 08:01:43,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:43,319 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:43,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:43,319 INFO L85 PathProgramCache]: Analyzing trace with hash -975164044, now seen corresponding path program 1 times [2025-02-08 08:01:43,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:43,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999848427] [2025-02-08 08:01:43,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:43,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:43,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:43,321 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:43,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 08:01:43,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-08 08:01:43,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 08:01:43,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:43,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:43,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:43,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:43,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:43,543 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:43,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999848427] [2025-02-08 08:01:43,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999848427] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:43,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:43,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:43,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979266535] [2025-02-08 08:01:43,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:43,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:43,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:43,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:43,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:43,544 INFO L87 Difference]: Start difference. First operand 1403 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:43,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:43,597 INFO L93 Difference]: Finished difference Result 1092 states and 1184 transitions. [2025-02-08 08:01:43,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:01:43,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2025-02-08 08:01:43,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:43,599 INFO L225 Difference]: With dead ends: 1092 [2025-02-08 08:01:43,599 INFO L226 Difference]: Without dead ends: 1092 [2025-02-08 08:01:43,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:43,600 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 56 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:43,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2519 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:01:43,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2025-02-08 08:01:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1090. [2025-02-08 08:01:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 737 states have (on average 1.5956580732700136) internal successors, (1176), 1085 states have internal predecessors, (1176), 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) [2025-02-08 08:01:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1182 transitions. [2025-02-08 08:01:43,609 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1182 transitions. Word has length 54 [2025-02-08 08:01:43,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:43,609 INFO L471 AbstractCegarLoop]: Abstraction has 1090 states and 1182 transitions. [2025-02-08 08:01:43,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:43,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1182 transitions. [2025-02-08 08:01:43,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-08 08:01:43,609 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:43,610 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] [2025-02-08 08:01:43,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 08:01:43,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:43,810 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr110ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:43,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash -450228029, now seen corresponding path program 1 times [2025-02-08 08:01:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526970541] [2025-02-08 08:01:43,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:43,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:43,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:43,815 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:43,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 08:01:43,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 08:01:43,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 08:01:43,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:43,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:43,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 08:01:43,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:43,984 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 08:01:43,984 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 08:01:43,985 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 08:01:43,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-02-08 08:01:44,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 08:01:44,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-02-08 08:01:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:44,051 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:44,051 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:44,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526970541] [2025-02-08 08:01:44,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526970541] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:44,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:44,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:01:44,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451919162] [2025-02-08 08:01:44,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:44,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:01:44,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:44,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:01:44,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:01:44,052 INFO L87 Difference]: Start difference. First operand 1090 states and 1182 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2025-02-08 08:01:44,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:44,262 INFO L93 Difference]: Finished difference Result 1570 states and 1683 transitions. [2025-02-08 08:01:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:01:44,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 [2025-02-08 08:01:44,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:44,266 INFO L225 Difference]: With dead ends: 1570 [2025-02-08 08:01:44,266 INFO L226 Difference]: Without dead ends: 1566 [2025-02-08 08:01:44,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:01:44,267 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 1856 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 3413 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:44,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 3413 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 08:01:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2025-02-08 08:01:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1036. [2025-02-08 08:01:44,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 683 states have (on average 1.6398243045387995) internal successors, (1120), 1031 states have internal predecessors, (1120), 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) [2025-02-08 08:01:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1126 transitions. [2025-02-08 08:01:44,276 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1126 transitions. Word has length 58 [2025-02-08 08:01:44,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:44,276 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 1126 transitions. [2025-02-08 08:01:44,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2025-02-08 08:01:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1126 transitions. [2025-02-08 08:01:44,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 08:01:44,276 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:44,276 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:44,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 08:01:44,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:44,477 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:44,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:44,477 INFO L85 PathProgramCache]: Analyzing trace with hash -919509060, now seen corresponding path program 1 times [2025-02-08 08:01:44,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:44,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46078390] [2025-02-08 08:01:44,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:44,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:44,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:44,480 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:44,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 08:01:44,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 08:01:44,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 08:01:44,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:44,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:44,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:01:44,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:44,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:45,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 08:01:45,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 08:01:45,083 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 08:01:45,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 08:01:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:45,084 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:45,084 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:45,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46078390] [2025-02-08 08:01:45,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46078390] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:45,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:45,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957940786] [2025-02-08 08:01:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:45,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:01:45,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:45,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:01:45,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:45,085 INFO L87 Difference]: Start difference. First operand 1036 states and 1126 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:46,252 INFO L93 Difference]: Finished difference Result 998 states and 1088 transitions. [2025-02-08 08:01:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:01:46,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-02-08 08:01:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:46,256 INFO L225 Difference]: With dead ends: 998 [2025-02-08 08:01:46,256 INFO L226 Difference]: Without dead ends: 998 [2025-02-08 08:01:46,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:01:46,256 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 1164 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:46,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 761 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 08:01:46,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2025-02-08 08:01:46,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 959. [2025-02-08 08:01:46,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 644 states have (on average 1.562111801242236) internal successors, (1006), 954 states have internal predecessors, (1006), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 08:01:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1012 transitions. [2025-02-08 08:01:46,264 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1012 transitions. Word has length 62 [2025-02-08 08:01:46,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:46,264 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1012 transitions. [2025-02-08 08:01:46,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:46,264 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1012 transitions. [2025-02-08 08:01:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-08 08:01:46,264 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:46,264 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:46,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 08:01:46,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:46,469 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:46,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:46,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2073406464, now seen corresponding path program 1 times [2025-02-08 08:01:46,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:46,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965128007] [2025-02-08 08:01:46,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:46,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:46,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:46,472 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:46,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 08:01:46,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-08 08:01:46,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 08:01:46,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:46,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:46,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:01:46,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:46,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:01:46,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:01:46,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-08 08:01:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:46,719 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:46,719 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:46,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965128007] [2025-02-08 08:01:46,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965128007] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:46,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:46,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:46,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814387137] [2025-02-08 08:01:46,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:46,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:01:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:46,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:01:46,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:46,720 INFO L87 Difference]: Start difference. First operand 959 states and 1012 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:48,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:48,032 INFO L93 Difference]: Finished difference Result 958 states and 1011 transitions. [2025-02-08 08:01:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:01:48,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2025-02-08 08:01:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:48,036 INFO L225 Difference]: With dead ends: 958 [2025-02-08 08:01:48,036 INFO L226 Difference]: Without dead ends: 958 [2025-02-08 08:01:48,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:01:48,037 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 2 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:48,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2183 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 08:01:48,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2025-02-08 08:01:48,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 958. [2025-02-08 08:01:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 644 states have (on average 1.56055900621118) internal successors, (1005), 953 states have internal predecessors, (1005), 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) [2025-02-08 08:01:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1011 transitions. [2025-02-08 08:01:48,053 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1011 transitions. Word has length 67 [2025-02-08 08:01:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:48,053 INFO L471 AbstractCegarLoop]: Abstraction has 958 states and 1011 transitions. [2025-02-08 08:01:48,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1011 transitions. [2025-02-08 08:01:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-08 08:01:48,054 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:48,054 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:48,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 08:01:48,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:48,255 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr422REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:48,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:48,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2073406463, now seen corresponding path program 1 times [2025-02-08 08:01:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:48,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519770103] [2025-02-08 08:01:48,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:48,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:48,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:48,258 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:48,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 08:01:48,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-08 08:01:48,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 08:01:48,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:48,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:48,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 08:01:48,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:48,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:48,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 08:01:48,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:01:48,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-08 08:01:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:48,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:48,501 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:48,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519770103] [2025-02-08 08:01:48,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519770103] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:48,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:48,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:48,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608074049] [2025-02-08 08:01:48,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:48,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:01:48,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:48,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:01:48,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:48,502 INFO L87 Difference]: Start difference. First operand 958 states and 1011 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:50,158 INFO L93 Difference]: Finished difference Result 957 states and 1010 transitions. [2025-02-08 08:01:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:01:50,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2025-02-08 08:01:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:50,160 INFO L225 Difference]: With dead ends: 957 [2025-02-08 08:01:50,160 INFO L226 Difference]: Without dead ends: 957 [2025-02-08 08:01:50,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:01:50,161 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 1 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:50,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2203 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 08:01:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2025-02-08 08:01:50,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 957. [2025-02-08 08:01:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 643 states have (on average 1.5614307931570761) internal successors, (1004), 952 states have internal predecessors, (1004), 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) [2025-02-08 08:01:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1010 transitions. [2025-02-08 08:01:50,168 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1010 transitions. Word has length 67 [2025-02-08 08:01:50,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:50,168 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1010 transitions. [2025-02-08 08:01:50,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:50,168 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1010 transitions. [2025-02-08 08:01:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-08 08:01:50,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:50,169 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:50,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 08:01:50,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:50,370 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:50,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:50,370 INFO L85 PathProgramCache]: Analyzing trace with hash -955597411, now seen corresponding path program 1 times [2025-02-08 08:01:50,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:50,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676711110] [2025-02-08 08:01:50,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:50,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:50,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:50,373 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:50,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 08:01:50,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-08 08:01:50,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-08 08:01:50,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:50,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:50,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 08:01:50,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:50,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:01:50,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-08 08:01:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:50,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:50,653 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:50,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676711110] [2025-02-08 08:01:50,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676711110] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:50,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:50,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:01:50,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299648530] [2025-02-08 08:01:50,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:50,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:01:50,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:50,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:01:50,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:01:50,655 INFO L87 Difference]: Start difference. First operand 957 states and 1010 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 08:01:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:52,717 INFO L93 Difference]: Finished difference Result 969 states and 1025 transitions. [2025-02-08 08:01:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:01:52,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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 75 [2025-02-08 08:01:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:52,723 INFO L225 Difference]: With dead ends: 969 [2025-02-08 08:01:52,723 INFO L226 Difference]: Without dead ends: 969 [2025-02-08 08:01:52,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-08 08:01:52,724 INFO L435 NwaCegarLoop]: 828 mSDtfsCounter, 6 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3505 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:52,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3505 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-08 08:01:52,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2025-02-08 08:01:52,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 963. [2025-02-08 08:01:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 648 states have (on average 1.5601851851851851) internal successors, (1011), 957 states have internal predecessors, (1011), 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) [2025-02-08 08:01:52,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1020 transitions. [2025-02-08 08:01:52,736 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1020 transitions. Word has length 75 [2025-02-08 08:01:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:52,736 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1020 transitions. [2025-02-08 08:01:52,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 08:01:52,737 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1020 transitions. [2025-02-08 08:01:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-08 08:01:52,737 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:52,737 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:52,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-08 08:01:52,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:52,938 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:52,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:52,938 INFO L85 PathProgramCache]: Analyzing trace with hash -955597410, now seen corresponding path program 1 times [2025-02-08 08:01:52,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:52,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711099769] [2025-02-08 08:01:52,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:52,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:52,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:52,941 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:52,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 08:01:53,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-08 08:01:53,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-08 08:01:53,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:53,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:53,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:53,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:53,157 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:53,157 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:53,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711099769] [2025-02-08 08:01:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711099769] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:53,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:53,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:53,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561550169] [2025-02-08 08:01:53,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:53,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:53,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:53,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:53,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:53,158 INFO L87 Difference]: Start difference. First operand 963 states and 1020 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 08:01:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:53,187 INFO L93 Difference]: Finished difference Result 960 states and 1014 transitions. [2025-02-08 08:01:53,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:53,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 75 [2025-02-08 08:01:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:53,189 INFO L225 Difference]: With dead ends: 960 [2025-02-08 08:01:53,189 INFO L226 Difference]: Without dead ends: 960 [2025-02-08 08:01:53,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:53,190 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 0 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:53,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2503 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:01:53,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2025-02-08 08:01:53,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2025-02-08 08:01:53,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 645 states have (on average 1.5612403100775194) internal successors, (1007), 955 states have internal predecessors, (1007), 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) [2025-02-08 08:01:53,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1014 transitions. [2025-02-08 08:01:53,199 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1014 transitions. Word has length 75 [2025-02-08 08:01:53,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:53,199 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1014 transitions. [2025-02-08 08:01:53,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 08:01:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1014 transitions. [2025-02-08 08:01:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-08 08:01:53,200 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:53,200 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:53,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-08 08:01:53,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:53,401 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:53,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1627014749, now seen corresponding path program 1 times [2025-02-08 08:01:53,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:53,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58816685] [2025-02-08 08:01:53,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:53,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:53,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:53,404 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:53,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 08:01:53,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-08 08:01:53,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 08:01:53,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:53,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:53,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:01:53,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:53,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:01:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:53,654 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:53,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58816685] [2025-02-08 08:01:53,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58816685] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:01:53,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:01:53,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-08 08:01:53,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788242591] [2025-02-08 08:01:53,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:01:53,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:01:53,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:53,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:01:53,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:01:53,655 INFO L87 Difference]: Start difference. First operand 960 states and 1014 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:01:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:53,748 INFO L93 Difference]: Finished difference Result 972 states and 1031 transitions. [2025-02-08 08:01:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:01:53,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 76 [2025-02-08 08:01:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:53,753 INFO L225 Difference]: With dead ends: 972 [2025-02-08 08:01:53,755 INFO L226 Difference]: Without dead ends: 972 [2025-02-08 08:01:53,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-08 08:01:53,755 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 8 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:53,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3337 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 08:01:53,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2025-02-08 08:01:53,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 970. [2025-02-08 08:01:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 654 states have (on average 1.562691131498471) internal successors, (1022), 964 states have internal predecessors, (1022), 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) [2025-02-08 08:01:53,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1029 transitions. [2025-02-08 08:01:53,770 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1029 transitions. Word has length 76 [2025-02-08 08:01:53,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:53,770 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1029 transitions. [2025-02-08 08:01:53,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:01:53,770 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1029 transitions. [2025-02-08 08:01:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-08 08:01:53,770 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:53,770 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:53,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 08:01:53,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:53,971 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:53,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:53,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1810665245, now seen corresponding path program 2 times [2025-02-08 08:01:53,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:53,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696859368] [2025-02-08 08:01:53,972 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:01:53,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:53,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:53,975 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:53,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 08:01:54,109 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-08 08:02:13,496 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 08:02:13,497 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:02:13,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:02:13,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 08:02:13,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:02:13,597 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 08:02:13,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 08:02:13,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:02:13,715 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:02:13,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-08 08:02:13,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-02-08 08:02:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 08:02:13,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:02:13,809 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-08 08:02:13,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-02-08 08:02:13,840 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:02:13,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696859368] [2025-02-08 08:02:13,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696859368] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:02:13,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1646532708] [2025-02-08 08:02:13,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:02:13,840 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 08:02:13,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 08:02:13,843 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 08:02:13,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2025-02-08 08:02:14,055 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-08 08:02:14,827 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 08:02:14,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:02:14,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:02:14,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:02:14,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:02:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:02:14,939 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:02:15,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:02:15,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1646532708] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:02:15,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:02:15,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-02-08 08:02:15,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532320435] [2025-02-08 08:02:15,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:02:15,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 08:02:15,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:02:15,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 08:02:15,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=554, Unknown=5, NotChecked=0, Total=650 [2025-02-08 08:02:15,150 INFO L87 Difference]: Start difference. First operand 970 states and 1029 transitions. Second operand has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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) [2025-02-08 08:02:20,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:02:20,981 INFO L93 Difference]: Finished difference Result 986 states and 1052 transitions. [2025-02-08 08:02:20,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 08:02:20,982 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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 79 [2025-02-08 08:02:20,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:02:20,985 INFO L225 Difference]: With dead ends: 986 [2025-02-08 08:02:20,985 INFO L226 Difference]: Without dead ends: 982 [2025-02-08 08:02:20,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=416, Invalid=2333, Unknown=7, NotChecked=0, Total=2756 [2025-02-08 08:02:20,986 INFO L435 NwaCegarLoop]: 559 mSDtfsCounter, 627 mSDsluCounter, 7341 mSDsCounter, 0 mSdLazyCounter, 5170 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 7900 SdHoareTripleChecker+Invalid, 5198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:02:20,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 7900 Invalid, 5198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5170 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2025-02-08 08:02:20,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2025-02-08 08:02:21,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 978. [2025-02-08 08:02:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 663 states have (on average 1.5580693815987934) internal successors, (1033), 972 states have internal predecessors, (1033), 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) [2025-02-08 08:02:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1040 transitions. [2025-02-08 08:02:21,002 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1040 transitions. Word has length 79 [2025-02-08 08:02:21,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:02:21,002 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1040 transitions. [2025-02-08 08:02:21,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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) [2025-02-08 08:02:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1040 transitions. [2025-02-08 08:02:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-02-08 08:02:21,002 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:02:21,002 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, 1, 1, 1, 1] [2025-02-08 08:02:21,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2025-02-08 08:02:21,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-02-08 08:02:21,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:02:21,407 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:02:21,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:02:21,408 INFO L85 PathProgramCache]: Analyzing trace with hash -608411298, now seen corresponding path program 1 times [2025-02-08 08:02:21,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:02:21,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693959133] [2025-02-08 08:02:21,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:02:21,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:02:21,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:02:21,411 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:02:21,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-08 08:02:21,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-02-08 08:02:21,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-02-08 08:02:21,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:02:21,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:02:21,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 08:02:21,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:02:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:02:21,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:02:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:02:22,243 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:02:22,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693959133] [2025-02-08 08:02:22,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693959133] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:02:22,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:02:22,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-08 08:02:22,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139573851] [2025-02-08 08:02:22,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:02:22,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 08:02:22,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:02:22,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 08:02:22,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-08 08:02:22,247 INFO L87 Difference]: Start difference. First operand 978 states and 1040 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:02:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:02:23,364 INFO L93 Difference]: Finished difference Result 1002 states and 1079 transitions. [2025-02-08 08:02:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 08:02:23,365 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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 85 [2025-02-08 08:02:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:02:23,370 INFO L225 Difference]: With dead ends: 1002 [2025-02-08 08:02:23,370 INFO L226 Difference]: Without dead ends: 996 [2025-02-08 08:02:23,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 08:02:23,371 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 26 mSDsluCounter, 9165 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 10001 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:02:23,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 10001 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 08:02:23,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2025-02-08 08:02:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996. [2025-02-08 08:02:23,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 681 states have (on average 1.550660792951542) internal successors, (1056), 990 states have internal predecessors, (1056), 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) [2025-02-08 08:02:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1063 transitions. [2025-02-08 08:02:23,388 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1063 transitions. Word has length 85 [2025-02-08 08:02:23,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:02:23,388 INFO L471 AbstractCegarLoop]: Abstraction has 996 states and 1063 transitions. [2025-02-08 08:02:23,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:02:23,389 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1063 transitions. [2025-02-08 08:02:23,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 08:02:23,389 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:02:23,389 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, 1, 1, 1, 1] [2025-02-08 08:02:23,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-02-08 08:02:23,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:02:23,590 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:02:23,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:02:23,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1474033118, now seen corresponding path program 2 times [2025-02-08 08:02:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:02:23,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834218571] [2025-02-08 08:02:23,591 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:02:23,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:02:23,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:02:23,596 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:02:23,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-08 08:02:23,765 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes.