./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:24:07,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:24:07,234 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:24:07,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:24:07,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:24:07,260 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:24:07,261 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:24:07,261 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:24:07,261 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:24:07,262 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:24:07,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:24:07,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:24:07,263 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:24:07,263 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:24:07,264 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:24:07,264 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:24:07,264 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:24:07,264 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:24:07,265 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:24:07,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:24:07,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:24:07,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:24:07,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:24:07,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:24:07,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:24:07,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:24:07,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:24:07,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:24:07,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:24:07,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:24:07,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:24:07,266 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 -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2025-02-06 12:24:07,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:24:07,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:24:07,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:24:07,529 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:24:07,529 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:24:07,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i [2025-02-06 12:24:08,751 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4e9b5e5c6/16d1cca82364464dac92f7ff18662ae3/FLAG19cc8429d [2025-02-06 12:24:09,147 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:24:09,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i [2025-02-06 12:24:09,164 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4e9b5e5c6/16d1cca82364464dac92f7ff18662ae3/FLAG19cc8429d [2025-02-06 12:24:09,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4e9b5e5c6/16d1cca82364464dac92f7ff18662ae3 [2025-02-06 12:24:09,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:24:09,345 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:24:09,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:24:09,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:24:09,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:24:09,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:24:09" (1/1) ... [2025-02-06 12:24:09,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373f1443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:09, skipping insertion in model container [2025-02-06 12:24:09,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:24:09" (1/1) ... [2025-02-06 12:24:09,387 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:24:09,633 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,658 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,661 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,663 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,668 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,693 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,693 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,695 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,695 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,697 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,698 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,699 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,699 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,702 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,703 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,704 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,705 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,705 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,706 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,708 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:09,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:24:09,721 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-06 12:24:09,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6663ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:09, skipping insertion in model container [2025-02-06 12:24:09,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:24:09,722 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:24:09,723 INFO L158 Benchmark]: Toolchain (without parser) took 377.54ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 84.2MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:24:09,724 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:24:09,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.27ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 84.2MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:24:09,725 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.27ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 84.2MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 750]: 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_test3-2.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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:24:11,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:24:11,677 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:24:11,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:24:11,686 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:24:11,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:24:11,714 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:24:11,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:24:11,714 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:24:11,714 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:24:11,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:24:11,714 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:24:11,714 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:24:11,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:24:11,714 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:24:11,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:24:11,715 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:24:11,716 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:24:11,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:24:11,716 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:24:11,716 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:24:11,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:24:11,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:24:11,716 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:24:11,717 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:24:11,717 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:24:11,717 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:24:11,717 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:24:11,717 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:24:11,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:24:11,717 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 -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2025-02-06 12:24:11,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:24:11,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:24:11,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:24:11,982 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:24:11,983 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:24:11,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i [2025-02-06 12:24:13,182 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c2d32364c/30bb8259c39143bfba93c51103f1aba5/FLAG7ac04d2d9 [2025-02-06 12:24:13,397 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:24:13,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i [2025-02-06 12:24:13,419 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c2d32364c/30bb8259c39143bfba93c51103f1aba5/FLAG7ac04d2d9 [2025-02-06 12:24:13,429 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c2d32364c/30bb8259c39143bfba93c51103f1aba5 [2025-02-06 12:24:13,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:24:13,433 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:24:13,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:24:13,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:24:13,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:24:13,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:24:13" (1/1) ... [2025-02-06 12:24:13,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b01332e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:13, skipping insertion in model container [2025-02-06 12:24:13,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:24:13" (1/1) ... [2025-02-06 12:24:13,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:24:13,709 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,735 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,738 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,741 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,747 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,778 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,778 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,780 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,781 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,785 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,787 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,787 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,788 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,792 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,793 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,795 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,795 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,796 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,796 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,799 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:24:13,813 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:24:13,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:24:13,852 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,877 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,878 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,880 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,888 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,908 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,909 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,910 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,910 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,911 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,912 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,912 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,913 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,916 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,918 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,919 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,920 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,920 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,921 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,924 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:24:13,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:24:13,933 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:24:14,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:24:14,056 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:24:14,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14 WrapperNode [2025-02-06 12:24:14,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:24:14,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:24:14,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:24:14,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:24:14,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,093 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,149 INFO L138 Inliner]: procedures = 180, calls = 325, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1165 [2025-02-06 12:24:14,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:24:14,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:24:14,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:24:14,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:24:14,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,192 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,258 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 34, 266]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2025-02-06 12:24:14,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,296 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:24:14,309 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:24:14,309 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:24:14,309 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:24:14,310 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (1/1) ... [2025-02-06 12:24:14,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:24:14,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:14,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:24:14,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:24:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:24:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:24:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-06 12:24:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:24:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:24:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-06 12:24:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 12:24:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 12:24:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:24:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:24:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 12:24:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:24:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:24:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 12:24:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:24:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:24:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:24:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:24:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 12:24:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 12:24:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:24:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:24:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 12:24:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:24:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:24:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-06 12:24:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:24:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:24:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:24:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-06 12:24:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:24:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:24:14,563 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:24:14,565 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:24:17,454 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-06 12:24:17,589 INFO L? ?]: Removed 1298 outVars from TransFormulas that were not future-live. [2025-02-06 12:24:17,590 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:24:17,609 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:24:17,609 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:24:17,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:24:17 BoogieIcfgContainer [2025-02-06 12:24:17,609 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:24:17,611 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:24:17,611 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:24:17,614 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:24:17,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:24:13" (1/3) ... [2025-02-06 12:24:17,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62238cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:24:17, skipping insertion in model container [2025-02-06 12:24:17,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:24:14" (2/3) ... [2025-02-06 12:24:17,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62238cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:24:17, skipping insertion in model container [2025-02-06 12:24:17,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:24:17" (3/3) ... [2025-02-06 12:24:17,616 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test3-2.i [2025-02-06 12:24:17,626 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:24:17,628 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_nondet_test3-2.i that has 5 procedures, 1282 locations, 1 initial locations, 43 loop locations, and 630 error locations. [2025-02-06 12:24:17,665 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:24:17,672 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;@76493c1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:24:17,673 INFO L334 AbstractCegarLoop]: Starting to check reachability of 630 error locations. [2025-02-06 12:24:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 1272 states, 637 states have (on average 2.2025117739403455) internal successors, (1403), 1265 states have internal predecessors, (1403), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 12:24:17,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 12:24:17,681 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:17,681 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 12:24:17,682 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:17,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:17,685 INFO L85 PathProgramCache]: Analyzing trace with hash 44388079, now seen corresponding path program 1 times [2025-02-06 12:24:17,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:17,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550009828] [2025-02-06 12:24:17,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:17,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:17,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:17,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:17,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 12:24:17,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 12:24:17,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 12:24:17,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:17,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:17,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:24:17,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:17,868 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 [2025-02-06 12:24:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:17,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:17,872 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:17,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550009828] [2025-02-06 12:24:17,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550009828] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:17,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:17,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:24:17,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427143949] [2025-02-06 12:24:17,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:17,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:24:17,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:17,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:24:17,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-06 12:24:17,893 INFO L87 Difference]: Start difference. First operand has 1272 states, 637 states have (on average 2.2025117739403455) internal successors, (1403), 1265 states have internal predecessors, (1403), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:19,895 INFO L93 Difference]: Finished difference Result 1853 states and 1977 transitions. [2025-02-06 12:24:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:24:19,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2025-02-06 12:24:19,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:19,908 INFO L225 Difference]: With dead ends: 1853 [2025-02-06 12:24:19,909 INFO L226 Difference]: Without dead ends: 1850 [2025-02-06 12:24:19,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-06 12:24:19,914 INFO L435 NwaCegarLoop]: 1052 mSDtfsCounter, 625 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1978 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:19,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1742 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 946 Invalid, 0 Unknown, 1978 Unchecked, 1.9s Time] [2025-02-06 12:24:19,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2025-02-06 12:24:20,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1260. [2025-02-06 12:24:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 631 states have (on average 2.088748019017433) internal successors, (1318), 1253 states have internal predecessors, (1318), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 12:24:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1328 transitions. [2025-02-06 12:24:20,050 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1328 transitions. Word has length 4 [2025-02-06 12:24:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:20,050 INFO L471 AbstractCegarLoop]: Abstraction has 1260 states and 1328 transitions. [2025-02-06 12:24:20,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1328 transitions. [2025-02-06 12:24:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 12:24:20,051 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:20,051 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 12:24:20,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 12:24:20,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:20,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr627REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:20,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:20,256 INFO L85 PathProgramCache]: Analyzing trace with hash 44389500, now seen corresponding path program 1 times [2025-02-06 12:24:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945554496] [2025-02-06 12:24:20,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:20,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:20,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:20,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:20,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 12:24:20,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 12:24:20,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 12:24:20,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:20,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:20,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:24:20,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:20,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:24:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:20,396 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:20,396 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:20,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945554496] [2025-02-06 12:24:20,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945554496] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:20,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:20,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:24:20,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753799590] [2025-02-06 12:24:20,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:20,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:24:20,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:20,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:24:20,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:24:20,398 INFO L87 Difference]: Start difference. First operand 1260 states and 1328 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:21,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:21,629 INFO L93 Difference]: Finished difference Result 1448 states and 1527 transitions. [2025-02-06 12:24:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:24:21,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2025-02-06 12:24:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:21,634 INFO L225 Difference]: With dead ends: 1448 [2025-02-06 12:24:21,634 INFO L226 Difference]: Without dead ends: 1448 [2025-02-06 12:24:21,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:24:21,636 INFO L435 NwaCegarLoop]: 766 mSDtfsCounter, 1170 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:21,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 932 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-06 12:24:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2025-02-06 12:24:21,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1259. [2025-02-06 12:24:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 640 states have (on average 2.0609375) internal successors, (1319), 1251 states have internal predecessors, (1319), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 12:24:21,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1329 transitions. [2025-02-06 12:24:21,658 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1329 transitions. Word has length 4 [2025-02-06 12:24:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:21,658 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 1329 transitions. [2025-02-06 12:24:21,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:21,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1329 transitions. [2025-02-06 12:24:21,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 12:24:21,659 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:21,659 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 12:24:21,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 12:24:21,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:21,860 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr628REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:21,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:21,863 INFO L85 PathProgramCache]: Analyzing trace with hash 44389501, now seen corresponding path program 1 times [2025-02-06 12:24:21,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:21,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044901439] [2025-02-06 12:24:21,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:21,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:21,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:21,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:21,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 12:24:21,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 12:24:21,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 12:24:21,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:21,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:21,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:24:21,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:21,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:24:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:22,021 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:22,021 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:22,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044901439] [2025-02-06 12:24:22,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044901439] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:22,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:22,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:24:22,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143694667] [2025-02-06 12:24:22,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:22,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:24:22,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:22,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:24:22,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:24:22,023 INFO L87 Difference]: Start difference. First operand 1259 states and 1329 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:24,578 INFO L93 Difference]: Finished difference Result 1873 states and 1988 transitions. [2025-02-06 12:24:24,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:24:24,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2025-02-06 12:24:24,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:24,586 INFO L225 Difference]: With dead ends: 1873 [2025-02-06 12:24:24,590 INFO L226 Difference]: Without dead ends: 1873 [2025-02-06 12:24:24,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:24:24,591 INFO L435 NwaCegarLoop]: 1031 mSDtfsCounter, 653 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:24,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1735 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-06 12:24:24,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2025-02-06 12:24:24,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1477. [2025-02-06 12:24:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 858 states have (on average 2.0396270396270397) internal successors, (1750), 1468 states have internal predecessors, (1750), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:24:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 1762 transitions. [2025-02-06 12:24:24,645 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 1762 transitions. Word has length 4 [2025-02-06 12:24:24,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:24,646 INFO L471 AbstractCegarLoop]: Abstraction has 1477 states and 1762 transitions. [2025-02-06 12:24:24,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:24,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 1762 transitions. [2025-02-06 12:24:24,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:24:24,646 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:24,647 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:24,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 12:24:24,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:24,847 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr624REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:24,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:24,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1430235645, now seen corresponding path program 1 times [2025-02-06 12:24:24,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:24,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418250405] [2025-02-06 12:24:24,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:24,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:24,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:24,853 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:24,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 12:24:24,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:24:24,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:24:24,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:24,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:24,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:24:24,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:24,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:24:25,096 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-02-06 12:24:25,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2025-02-06 12:24:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:25,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:25,152 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:25,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418250405] [2025-02-06 12:24:25,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418250405] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:25,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:25,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:24:25,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437416213] [2025-02-06 12:24:25,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:25,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:24:25,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:25,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:24:25,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:24:25,152 INFO L87 Difference]: Start difference. First operand 1477 states and 1762 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:28,997 INFO L93 Difference]: Finished difference Result 2776 states and 2952 transitions. [2025-02-06 12:24:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:24:28,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-06 12:24:28,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:29,009 INFO L225 Difference]: With dead ends: 2776 [2025-02-06 12:24:29,009 INFO L226 Difference]: Without dead ends: 2776 [2025-02-06 12:24:29,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:24:29,010 INFO L435 NwaCegarLoop]: 1268 mSDtfsCounter, 1603 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:29,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 2673 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-02-06 12:24:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2025-02-06 12:24:29,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 1628. [2025-02-06 12:24:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1009 states have (on average 2.020812685827552) internal successors, (2039), 1619 states have internal predecessors, (2039), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:24:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2051 transitions. [2025-02-06 12:24:29,069 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2051 transitions. Word has length 9 [2025-02-06 12:24:29,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:29,072 INFO L471 AbstractCegarLoop]: Abstraction has 1628 states and 2051 transitions. [2025-02-06 12:24:29,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2051 transitions. [2025-02-06 12:24:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 12:24:29,073 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:29,073 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:29,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 12:24:29,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:29,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr621REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:29,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1387633362, now seen corresponding path program 1 times [2025-02-06 12:24:29,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:29,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613973610] [2025-02-06 12:24:29,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:29,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:29,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:29,277 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:29,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 12:24:29,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 12:24:29,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 12:24:29,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:29,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:29,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:24:29,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:29,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:24:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:29,399 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:29,399 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:29,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613973610] [2025-02-06 12:24:29,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613973610] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:29,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:29,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:24:29,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228871771] [2025-02-06 12:24:29,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:29,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:24:29,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:29,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:24:29,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:24:29,400 INFO L87 Difference]: Start difference. First operand 1628 states and 2051 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:30,766 INFO L93 Difference]: Finished difference Result 2187 states and 2838 transitions. [2025-02-06 12:24:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:24:30,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-06 12:24:30,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:30,771 INFO L225 Difference]: With dead ends: 2187 [2025-02-06 12:24:30,771 INFO L226 Difference]: Without dead ends: 2187 [2025-02-06 12:24:30,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:24:30,773 INFO L435 NwaCegarLoop]: 1197 mSDtfsCounter, 952 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:30,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1563 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 12:24:30,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2025-02-06 12:24:30,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1580. [2025-02-06 12:24:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1009 states have (on average 1.962338949454906) internal successors, (1980), 1571 states have internal predecessors, (1980), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:24:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 1992 transitions. [2025-02-06 12:24:30,795 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 1992 transitions. Word has length 10 [2025-02-06 12:24:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:30,795 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 1992 transitions. [2025-02-06 12:24:30,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 1992 transitions. [2025-02-06 12:24:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 12:24:30,795 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:30,795 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:30,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 12:24:30,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:30,996 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr622REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:30,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:30,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1387633363, now seen corresponding path program 1 times [2025-02-06 12:24:30,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:30,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77663564] [2025-02-06 12:24:30,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:30,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:30,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:31,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:31,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 12:24:31,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 12:24:31,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 12:24:31,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:31,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:31,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:24:31,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:31,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:24:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:31,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:31,146 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:31,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77663564] [2025-02-06 12:24:31,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77663564] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:31,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:31,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:24:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153174837] [2025-02-06 12:24:31,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:31,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:24:31,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:31,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:24:31,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:24:31,148 INFO L87 Difference]: Start difference. First operand 1580 states and 1992 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:32,985 INFO L93 Difference]: Finished difference Result 2289 states and 2940 transitions. [2025-02-06 12:24:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:24:32,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-06 12:24:32,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:32,991 INFO L225 Difference]: With dead ends: 2289 [2025-02-06 12:24:32,991 INFO L226 Difference]: Without dead ends: 2289 [2025-02-06 12:24:32,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:24:32,991 INFO L435 NwaCegarLoop]: 1384 mSDtfsCounter, 713 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:32,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1927 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-06 12:24:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2025-02-06 12:24:33,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 1609. [2025-02-06 12:24:33,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1048 states have (on average 1.941793893129771) internal successors, (2035), 1600 states have internal predecessors, (2035), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:24:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2047 transitions. [2025-02-06 12:24:33,037 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2047 transitions. Word has length 10 [2025-02-06 12:24:33,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:33,037 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 2047 transitions. [2025-02-06 12:24:33,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2047 transitions. [2025-02-06 12:24:33,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 12:24:33,041 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:33,041 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:33,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 12:24:33,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:33,242 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:33,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash 403897438, now seen corresponding path program 1 times [2025-02-06 12:24:33,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:33,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997617026] [2025-02-06 12:24:33,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:33,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:33,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:33,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:33,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 12:24:33,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 12:24:33,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 12:24:33,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:33,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:33,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:24:33,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:33,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:33,439 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997617026] [2025-02-06 12:24:33,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997617026] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:33,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:33,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:24:33,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965653803] [2025-02-06 12:24:33,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:33,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:24:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:33,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:24:33,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:24:33,440 INFO L87 Difference]: Start difference. First operand 1609 states and 2047 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:34,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:34,017 INFO L93 Difference]: Finished difference Result 2231 states and 2806 transitions. [2025-02-06 12:24:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:24:34,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2025-02-06 12:24:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:34,026 INFO L225 Difference]: With dead ends: 2231 [2025-02-06 12:24:34,030 INFO L226 Difference]: Without dead ends: 2231 [2025-02-06 12:24:34,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:24:34,031 INFO L435 NwaCegarLoop]: 1402 mSDtfsCounter, 640 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:34,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 3833 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 12:24:34,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2025-02-06 12:24:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1867. [2025-02-06 12:24:34,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1304 states have (on average 1.9547546012269938) internal successors, (2549), 1856 states have internal predecessors, (2549), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:24:34,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 2565 transitions. [2025-02-06 12:24:34,073 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 2565 transitions. Word has length 14 [2025-02-06 12:24:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:34,073 INFO L471 AbstractCegarLoop]: Abstraction has 1867 states and 2565 transitions. [2025-02-06 12:24:34,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 2565 transitions. [2025-02-06 12:24:34,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 12:24:34,073 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:34,073 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:34,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 12:24:34,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:34,274 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr297REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:34,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2004892325, now seen corresponding path program 1 times [2025-02-06 12:24:34,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:34,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258002501] [2025-02-06 12:24:34,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:34,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:34,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:34,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:34,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 12:24:34,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:24:34,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:24:34,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:34,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:34,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:24:34,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:34,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:24:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:34,443 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:34,443 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:34,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258002501] [2025-02-06 12:24:34,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258002501] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:34,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:34,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:24:34,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449309972] [2025-02-06 12:24:34,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:34,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:24:34,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:34,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:24:34,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:24:34,444 INFO L87 Difference]: Start difference. First operand 1867 states and 2565 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) 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) [2025-02-06 12:24:36,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:36,062 INFO L93 Difference]: Finished difference Result 2054 states and 2695 transitions. [2025-02-06 12:24:36,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:24:36,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) 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 [2025-02-06 12:24:36,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:36,071 INFO L225 Difference]: With dead ends: 2054 [2025-02-06 12:24:36,071 INFO L226 Difference]: Without dead ends: 2054 [2025-02-06 12:24:36,071 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 [2025-02-06 12:24:36,072 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 1165 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:36,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1500 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-06 12:24:36,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2025-02-06 12:24:36,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1844. [2025-02-06 12:24:36,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1304 states have (on average 1.88420245398773) internal successors, (2457), 1833 states have internal predecessors, (2457), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:24:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2473 transitions. [2025-02-06 12:24:36,096 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2473 transitions. Word has length 16 [2025-02-06 12:24:36,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:36,096 INFO L471 AbstractCegarLoop]: Abstraction has 1844 states and 2473 transitions. [2025-02-06 12:24:36,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) 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) [2025-02-06 12:24:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2473 transitions. [2025-02-06 12:24:36,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 12:24:36,097 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:36,097 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:36,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 12:24:36,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:36,298 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr298REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:36,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:36,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2004892326, now seen corresponding path program 1 times [2025-02-06 12:24:36,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:36,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445371523] [2025-02-06 12:24:36,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:36,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:36,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:36,301 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:36,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 12:24:36,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:24:36,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:24:36,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:36,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:36,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:24:36,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:36,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:24:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:36,521 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:36,521 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:36,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445371523] [2025-02-06 12:24:36,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445371523] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:36,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:36,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:24:36,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394768979] [2025-02-06 12:24:36,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:36,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:24:36,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:36,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:24:36,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:24:36,522 INFO L87 Difference]: Start difference. First operand 1844 states and 2473 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) 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) [2025-02-06 12:24:38,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:38,989 INFO L93 Difference]: Finished difference Result 2176 states and 2627 transitions. [2025-02-06 12:24:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:24:38,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) 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 [2025-02-06 12:24:38,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:38,999 INFO L225 Difference]: With dead ends: 2176 [2025-02-06 12:24:39,002 INFO L226 Difference]: Without dead ends: 2176 [2025-02-06 12:24:39,003 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 [2025-02-06 12:24:39,004 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 628 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:39,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 2244 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-06 12:24:39,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2025-02-06 12:24:39,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1793. [2025-02-06 12:24:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1253 states have (on average 1.8834796488427774) internal successors, (2360), 1782 states have internal predecessors, (2360), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:24:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2376 transitions. [2025-02-06 12:24:39,029 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2376 transitions. Word has length 16 [2025-02-06 12:24:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:39,029 INFO L471 AbstractCegarLoop]: Abstraction has 1793 states and 2376 transitions. [2025-02-06 12:24:39,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) 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) [2025-02-06 12:24:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2376 transitions. [2025-02-06 12:24:39,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 12:24:39,030 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:39,030 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:39,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 12:24:39,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:39,231 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr274REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:39,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:39,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2022075945, now seen corresponding path program 1 times [2025-02-06 12:24:39,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:39,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201811272] [2025-02-06 12:24:39,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:39,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:39,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:39,233 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:39,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 12:24:39,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 12:24:39,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 12:24:39,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:39,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:39,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:24:39,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:39,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:39,358 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:39,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201811272] [2025-02-06 12:24:39,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201811272] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:39,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:39,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:24:39,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906708427] [2025-02-06 12:24:39,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:39,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:24:39,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:39,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:24:39,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:24:39,360 INFO L87 Difference]: Start difference. First operand 1793 states and 2376 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:39,402 INFO L93 Difference]: Finished difference Result 1721 states and 2253 transitions. [2025-02-06 12:24:39,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:24:39,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2025-02-06 12:24:39,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:39,410 INFO L225 Difference]: With dead ends: 1721 [2025-02-06 12:24:39,410 INFO L226 Difference]: Without dead ends: 1721 [2025-02-06 12:24:39,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:24:39,411 INFO L435 NwaCegarLoop]: 1156 mSDtfsCounter, 45 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3445 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 [2025-02-06 12:24:39,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3445 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:24:39,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2025-02-06 12:24:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1721. [2025-02-06 12:24:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1200 states have (on average 1.8641666666666667) internal successors, (2237), 1710 states have internal predecessors, (2237), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:24:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2253 transitions. [2025-02-06 12:24:39,429 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2253 transitions. Word has length 17 [2025-02-06 12:24:39,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:39,429 INFO L471 AbstractCegarLoop]: Abstraction has 1721 states and 2253 transitions. [2025-02-06 12:24:39,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:39,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2253 transitions. [2025-02-06 12:24:39,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 12:24:39,431 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:39,431 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:39,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 12:24:39,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:39,632 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:39,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1999096536, now seen corresponding path program 1 times [2025-02-06 12:24:39,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:39,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455842757] [2025-02-06 12:24:39,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:39,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:39,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:39,635 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:39,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 12:24:39,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 12:24:39,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 12:24:39,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:39,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:39,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:24:39,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:39,847 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 [2025-02-06 12:24:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:39,848 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:39,848 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:39,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455842757] [2025-02-06 12:24:39,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455842757] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:39,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:39,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:24:39,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331603596] [2025-02-06 12:24:39,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:39,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:24:39,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:39,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:24:39,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-06 12:24:39,849 INFO L87 Difference]: Start difference. First operand 1721 states and 2253 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:40,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:40,972 INFO L93 Difference]: Finished difference Result 2016 states and 2623 transitions. [2025-02-06 12:24:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:24:40,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2025-02-06 12:24:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:40,978 INFO L225 Difference]: With dead ends: 2016 [2025-02-06 12:24:40,978 INFO L226 Difference]: Without dead ends: 2010 [2025-02-06 12:24:40,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-06 12:24:40,978 INFO L435 NwaCegarLoop]: 1078 mSDtfsCounter, 240 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1433 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:40,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1718 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 642 Invalid, 0 Unknown, 1433 Unchecked, 1.1s Time] [2025-02-06 12:24:40,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2025-02-06 12:24:40,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1779. [2025-02-06 12:24:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1257 states have (on average 1.8289578361177405) internal successors, (2299), 1767 states have internal predecessors, (2299), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:24:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2317 transitions. [2025-02-06 12:24:40,996 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2317 transitions. Word has length 17 [2025-02-06 12:24:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:40,996 INFO L471 AbstractCegarLoop]: Abstraction has 1779 states and 2317 transitions. [2025-02-06 12:24:40,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:40,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2317 transitions. [2025-02-06 12:24:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-06 12:24:40,998 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:40,998 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:41,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 12:24:41,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:41,199 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr613REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:41,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash 260792645, now seen corresponding path program 1 times [2025-02-06 12:24:41,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:41,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820822541] [2025-02-06 12:24:41,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:41,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:41,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:41,205 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:41,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 12:24:41,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 12:24:41,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 12:24:41,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:41,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:41,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:24:41,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:41,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:24:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:41,431 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:41,431 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:41,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820822541] [2025-02-06 12:24:41,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820822541] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:41,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:41,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:24:41,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785622065] [2025-02-06 12:24:41,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:41,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:24:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:41,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:24:41,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:24:41,431 INFO L87 Difference]: Start difference. First operand 1779 states and 2317 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:43,519 INFO L93 Difference]: Finished difference Result 2223 states and 2869 transitions. [2025-02-06 12:24:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:24:43,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-06 12:24:43,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:43,524 INFO L225 Difference]: With dead ends: 2223 [2025-02-06 12:24:43,524 INFO L226 Difference]: Without dead ends: 2223 [2025-02-06 12:24:43,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:24:43,524 INFO L435 NwaCegarLoop]: 1047 mSDtfsCounter, 916 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:43,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 2102 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:24:43,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2025-02-06 12:24:43,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 1756. [2025-02-06 12:24:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1257 states have (on average 1.79236276849642) internal successors, (2253), 1744 states have internal predecessors, (2253), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:24:43,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2271 transitions. [2025-02-06 12:24:43,544 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2271 transitions. Word has length 20 [2025-02-06 12:24:43,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:43,544 INFO L471 AbstractCegarLoop]: Abstraction has 1756 states and 2271 transitions. [2025-02-06 12:24:43,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:43,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2271 transitions. [2025-02-06 12:24:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-06 12:24:43,545 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:43,545 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:43,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 12:24:43,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:43,749 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr614REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:43,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:43,749 INFO L85 PathProgramCache]: Analyzing trace with hash 260792646, now seen corresponding path program 1 times [2025-02-06 12:24:43,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:43,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73859241] [2025-02-06 12:24:43,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:43,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:43,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:43,752 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:43,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 12:24:43,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 12:24:43,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 12:24:43,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:43,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:43,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:24:43,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:43,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:24:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:43,957 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:43,957 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:43,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73859241] [2025-02-06 12:24:43,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73859241] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:43,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:43,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:24:43,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176562604] [2025-02-06 12:24:43,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:43,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:24:43,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:43,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:24:43,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:24:43,958 INFO L87 Difference]: Start difference. First operand 1756 states and 2271 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:46,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:46,327 INFO L93 Difference]: Finished difference Result 2414 states and 3054 transitions. [2025-02-06 12:24:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:24:46,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-06 12:24:46,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:46,337 INFO L225 Difference]: With dead ends: 2414 [2025-02-06 12:24:46,337 INFO L226 Difference]: Without dead ends: 2414 [2025-02-06 12:24:46,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:24:46,337 INFO L435 NwaCegarLoop]: 1325 mSDtfsCounter, 750 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:46,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 2672 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-06 12:24:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2025-02-06 12:24:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 1870. [2025-02-06 12:24:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1371 states have (on average 1.7439824945295406) internal successors, (2391), 1858 states have internal predecessors, (2391), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:24:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2409 transitions. [2025-02-06 12:24:46,357 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2409 transitions. Word has length 20 [2025-02-06 12:24:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:46,357 INFO L471 AbstractCegarLoop]: Abstraction has 1870 states and 2409 transitions. [2025-02-06 12:24:46,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2409 transitions. [2025-02-06 12:24:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-06 12:24:46,359 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:46,359 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:46,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 12:24:46,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:46,563 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr614REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:46,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash 935810843, now seen corresponding path program 1 times [2025-02-06 12:24:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:46,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521596343] [2025-02-06 12:24:46,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:46,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:46,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:46,569 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:46,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 12:24:46,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 12:24:46,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 12:24:46,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:46,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:46,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:24:46,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:46,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:24:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:46,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:24:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:47,350 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:47,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521596343] [2025-02-06 12:24:47,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521596343] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:24:47,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:24:47,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:24:47,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126610961] [2025-02-06 12:24:47,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:24:47,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:24:47,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:47,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:24:47,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:24:47,351 INFO L87 Difference]: Start difference. First operand 1870 states and 2409 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:53,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:53,967 INFO L93 Difference]: Finished difference Result 2770 states and 3544 transitions. [2025-02-06 12:24:53,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:24:53,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-02-06 12:24:53,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:53,974 INFO L225 Difference]: With dead ends: 2770 [2025-02-06 12:24:53,974 INFO L226 Difference]: Without dead ends: 2770 [2025-02-06 12:24:53,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:24:53,974 INFO L435 NwaCegarLoop]: 1352 mSDtfsCounter, 1399 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 4128 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:53,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 4128 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2857 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2025-02-06 12:24:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2025-02-06 12:24:53,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2034. [2025-02-06 12:24:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2034 states, 1535 states have (on average 1.7087947882736156) internal successors, (2623), 2022 states have internal predecessors, (2623), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:24:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 2641 transitions. [2025-02-06 12:24:53,999 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 2641 transitions. Word has length 39 [2025-02-06 12:24:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:54,000 INFO L471 AbstractCegarLoop]: Abstraction has 2034 states and 2641 transitions. [2025-02-06 12:24:54,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 2641 transitions. [2025-02-06 12:24:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-06 12:24:54,001 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:54,001 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:54,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-06 12:24:54,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:54,206 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr213REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:54,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash 642001390, now seen corresponding path program 1 times [2025-02-06 12:24:54,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:54,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092100059] [2025-02-06 12:24:54,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:54,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:54,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:54,210 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:54,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 12:24:54,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-06 12:24:54,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-06 12:24:54,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:54,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:54,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:24:54,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:54,379 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:54,379 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:54,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092100059] [2025-02-06 12:24:54,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092100059] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:54,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:54,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:24:54,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063805093] [2025-02-06 12:24:54,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:54,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:24:54,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:54,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:24:54,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:24:54,380 INFO L87 Difference]: Start difference. First operand 2034 states and 2641 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:54,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:54,432 INFO L93 Difference]: Finished difference Result 2025 states and 2306 transitions. [2025-02-06 12:24:54,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:24:54,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-02-06 12:24:54,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:54,435 INFO L225 Difference]: With dead ends: 2025 [2025-02-06 12:24:54,435 INFO L226 Difference]: Without dead ends: 2025 [2025-02-06 12:24:54,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:24:54,436 INFO L435 NwaCegarLoop]: 1433 mSDtfsCounter, 323 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:54,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 2516 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:24:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2025-02-06 12:24:54,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 1648. [2025-02-06 12:24:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1151 states have (on average 1.6368375325803648) internal successors, (1884), 1638 states have internal predecessors, (1884), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 12:24:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 1898 transitions. [2025-02-06 12:24:54,448 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 1898 transitions. Word has length 50 [2025-02-06 12:24:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:54,448 INFO L471 AbstractCegarLoop]: Abstraction has 1648 states and 1898 transitions. [2025-02-06 12:24:54,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 1898 transitions. [2025-02-06 12:24:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-06 12:24:54,449 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:54,449 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:54,457 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 [2025-02-06 12:24:54,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:54,650 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:54,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1322058460, now seen corresponding path program 1 times [2025-02-06 12:24:54,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:54,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518647188] [2025-02-06 12:24:54,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:54,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:54,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:54,653 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:54,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 12:24:54,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-06 12:24:54,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 12:24:54,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:54,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:54,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:24:54,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:54,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:54,839 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:54,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518647188] [2025-02-06 12:24:54,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518647188] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:54,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:54,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:24:54,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911688128] [2025-02-06 12:24:54,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:54,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:24:54,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:54,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:24:54,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:24:54,840 INFO L87 Difference]: Start difference. First operand 1648 states and 1898 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:54,881 INFO L93 Difference]: Finished difference Result 1630 states and 1868 transitions. [2025-02-06 12:24:54,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:24:54,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-02-06 12:24:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:54,884 INFO L225 Difference]: With dead ends: 1630 [2025-02-06 12:24:54,884 INFO L226 Difference]: Without dead ends: 1630 [2025-02-06 12:24:54,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:24:54,885 INFO L435 NwaCegarLoop]: 1135 mSDtfsCounter, 27 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3368 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 [2025-02-06 12:24:54,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3368 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:24:54,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2025-02-06 12:24:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2025-02-06 12:24:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1133 states have (on average 1.6363636363636365) internal successors, (1854), 1620 states have internal predecessors, (1854), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 12:24:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 1868 transitions. [2025-02-06 12:24:54,904 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 1868 transitions. Word has length 53 [2025-02-06 12:24:54,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:54,904 INFO L471 AbstractCegarLoop]: Abstraction has 1630 states and 1868 transitions. [2025-02-06 12:24:54,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 1868 transitions. [2025-02-06 12:24:54,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-06 12:24:54,904 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:54,904 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:54,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-06 12:24:55,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:55,106 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr532REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:55,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:55,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1271481770, now seen corresponding path program 1 times [2025-02-06 12:24:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:55,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060599532] [2025-02-06 12:24:55,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:55,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:55,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:55,110 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:55,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 12:24:55,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 12:24:55,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 12:24:55,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:55,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:55,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:24:55,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:55,331 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:55,331 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:55,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060599532] [2025-02-06 12:24:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060599532] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:55,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:24:55,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691085230] [2025-02-06 12:24:55,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:55,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:24:55,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:55,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:24:55,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:24:55,332 INFO L87 Difference]: Start difference. First operand 1630 states and 1868 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:55,401 INFO L93 Difference]: Finished difference Result 1319 states and 1432 transitions. [2025-02-06 12:24:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:24:55,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-02-06 12:24:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:55,404 INFO L225 Difference]: With dead ends: 1319 [2025-02-06 12:24:55,404 INFO L226 Difference]: Without dead ends: 1319 [2025-02-06 12:24:55,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:24:55,405 INFO L435 NwaCegarLoop]: 1089 mSDtfsCounter, 56 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:55,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3194 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:24:55,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2025-02-06 12:24:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2025-02-06 12:24:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 843 states have (on average 1.6797153024911031) internal successors, (1416), 1307 states have internal predecessors, (1416), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 12:24:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1430 transitions. [2025-02-06 12:24:55,417 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1430 transitions. Word has length 55 [2025-02-06 12:24:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:55,418 INFO L471 AbstractCegarLoop]: Abstraction has 1317 states and 1430 transitions. [2025-02-06 12:24:55,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1430 transitions. [2025-02-06 12:24:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-06 12:24:55,419 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:55,419 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:55,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 12:24:55,619 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 [2025-02-06 12:24:55,620 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:55,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:55,620 INFO L85 PathProgramCache]: Analyzing trace with hash -581255132, now seen corresponding path program 1 times [2025-02-06 12:24:55,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:55,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149739825] [2025-02-06 12:24:55,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:55,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:55,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:55,623 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) [2025-02-06 12:24:55,624 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 [2025-02-06 12:24:55,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-06 12:24:55,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-06 12:24:55,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:55,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:55,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:24:55,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:55,807 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:24:55,807 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:24:55,808 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:24:55,809 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 [2025-02-06 12:24:55,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:24:55,870 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 [2025-02-06 12:24:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:55,904 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:55,904 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:55,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149739825] [2025-02-06 12:24:55,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149739825] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:55,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:55,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:24:55,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382015728] [2025-02-06 12:24:55,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:55,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 12:24:55,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:55,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 12:24:55,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:24:55,906 INFO L87 Difference]: Start difference. First operand 1317 states and 1430 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:56,216 INFO L93 Difference]: Finished difference Result 1996 states and 2156 transitions. [2025-02-06 12:24:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:24:56,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-02-06 12:24:56,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:56,220 INFO L225 Difference]: With dead ends: 1996 [2025-02-06 12:24:56,220 INFO L226 Difference]: Without dead ends: 1992 [2025-02-06 12:24:56,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:24:56,221 INFO L435 NwaCegarLoop]: 1076 mSDtfsCounter, 1660 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 4515 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:56,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1668 Valid, 4515 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 12:24:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2025-02-06 12:24:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1264. [2025-02-06 12:24:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 791 states have (on average 1.723135271807838) internal successors, (1363), 1255 states have internal predecessors, (1363), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:24:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1375 transitions. [2025-02-06 12:24:56,232 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1375 transitions. Word has length 61 [2025-02-06 12:24:56,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:56,232 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 1375 transitions. [2025-02-06 12:24:56,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:56,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1375 transitions. [2025-02-06 12:24:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-06 12:24:56,232 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:56,232 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:56,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 12:24:56,433 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 [2025-02-06 12:24:56,433 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr532REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:56,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:56,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1619327902, now seen corresponding path program 1 times [2025-02-06 12:24:56,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:56,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325091732] [2025-02-06 12:24:56,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:56,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:56,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:56,436 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:56,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 12:24:56,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 12:24:56,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 12:24:56,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:56,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:56,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:24:56,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:56,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:24:57,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:24:57,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 12:24:57,016 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:24:57,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 12:24:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:57,017 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:57,017 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:57,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325091732] [2025-02-06 12:24:57,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325091732] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:57,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:57,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:24:57,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888274319] [2025-02-06 12:24:57,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:57,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:24:57,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:57,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:24:57,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:24:57,019 INFO L87 Difference]: Start difference. First operand 1264 states and 1375 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:24:59,353 INFO L93 Difference]: Finished difference Result 1605 states and 1743 transitions. [2025-02-06 12:24:59,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:24:59,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-02-06 12:24:59,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:24:59,356 INFO L225 Difference]: With dead ends: 1605 [2025-02-06 12:24:59,356 INFO L226 Difference]: Without dead ends: 1605 [2025-02-06 12:24:59,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:24:59,356 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 1862 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:24:59,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 1165 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-06 12:24:59,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2025-02-06 12:24:59,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1187. [2025-02-06 12:24:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 752 states have (on average 1.6609042553191489) internal successors, (1249), 1178 states have internal predecessors, (1249), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:24:59,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1261 transitions. [2025-02-06 12:24:59,364 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1261 transitions. Word has length 63 [2025-02-06 12:24:59,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:24:59,364 INFO L471 AbstractCegarLoop]: Abstraction has 1187 states and 1261 transitions. [2025-02-06 12:24:59,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:24:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1261 transitions. [2025-02-06 12:24:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 12:24:59,365 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:24:59,365 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:24:59,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 12:24:59,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:59,565 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:24:59,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:24:59,566 INFO L85 PathProgramCache]: Analyzing trace with hash -286013008, now seen corresponding path program 1 times [2025-02-06 12:24:59,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:24:59,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922979166] [2025-02-06 12:24:59,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:24:59,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:24:59,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:24:59,568 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:24:59,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 12:24:59,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-06 12:24:59,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 12:24:59,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:24:59,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:24:59,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:24:59,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:24:59,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:24:59,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:24:59,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 12:24:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:24:59,815 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:24:59,816 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:24:59,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922979166] [2025-02-06 12:24:59,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922979166] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:24:59,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:24:59,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:24:59,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677149259] [2025-02-06 12:24:59,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:24:59,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:24:59,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:24:59,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:24:59,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:24:59,817 INFO L87 Difference]: Start difference. First operand 1187 states and 1261 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:25:01,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:25:01,283 INFO L93 Difference]: Finished difference Result 1186 states and 1260 transitions. [2025-02-06 12:25:01,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:25:01,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-02-06 12:25:01,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:25:01,285 INFO L225 Difference]: With dead ends: 1186 [2025-02-06 12:25:01,285 INFO L226 Difference]: Without dead ends: 1186 [2025-02-06 12:25:01,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:25:01,287 INFO L435 NwaCegarLoop]: 1061 mSDtfsCounter, 2 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:25:01,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2769 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-06 12:25:01,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2025-02-06 12:25:01,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2025-02-06 12:25:01,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 752 states have (on average 1.6595744680851063) internal successors, (1248), 1177 states have internal predecessors, (1248), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:25:01,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1260 transitions. [2025-02-06 12:25:01,295 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1260 transitions. Word has length 68 [2025-02-06 12:25:01,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:25:01,295 INFO L471 AbstractCegarLoop]: Abstraction has 1186 states and 1260 transitions. [2025-02-06 12:25:01,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:25:01,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1260 transitions. [2025-02-06 12:25:01,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 12:25:01,296 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:25:01,296 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:25:01,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-06 12:25:01,496 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 [2025-02-06 12:25:01,496 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:25:01,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:25:01,497 INFO L85 PathProgramCache]: Analyzing trace with hash -286013007, now seen corresponding path program 1 times [2025-02-06 12:25:01,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:25:01,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175607087] [2025-02-06 12:25:01,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:25:01,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:25:01,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:25:01,500 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) [2025-02-06 12:25:01,501 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 [2025-02-06 12:25:01,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-06 12:25:01,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 12:25:01,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:25:01,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:25:01,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 12:25:01,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:25:01,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:25:01,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:25:01,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 12:25:01,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-06 12:25:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:25:01,811 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:25:01,811 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:25:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175607087] [2025-02-06 12:25:01,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175607087] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:25:01,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:25:01,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:25:01,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129971137] [2025-02-06 12:25:01,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:25:01,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:25:01,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:25:01,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:25:01,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:25:01,814 INFO L87 Difference]: Start difference. First operand 1186 states and 1260 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:25:03,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:25:03,833 INFO L93 Difference]: Finished difference Result 1185 states and 1259 transitions. [2025-02-06 12:25:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:25:03,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-02-06 12:25:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:25:03,835 INFO L225 Difference]: With dead ends: 1185 [2025-02-06 12:25:03,835 INFO L226 Difference]: Without dead ends: 1185 [2025-02-06 12:25:03,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:25:03,836 INFO L435 NwaCegarLoop]: 1061 mSDtfsCounter, 1 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:25:03,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2775 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:25:03,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2025-02-06 12:25:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2025-02-06 12:25:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 751 states have (on average 1.6604527296937417) internal successors, (1247), 1176 states have internal predecessors, (1247), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:25:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1259 transitions. [2025-02-06 12:25:03,844 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1259 transitions. Word has length 68 [2025-02-06 12:25:03,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:25:03,844 INFO L471 AbstractCegarLoop]: Abstraction has 1185 states and 1259 transitions. [2025-02-06 12:25:03,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:25:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1259 transitions. [2025-02-06 12:25:03,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-06 12:25:03,845 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:25:03,845 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] [2025-02-06 12:25:03,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-06 12:25:04,045 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 [2025-02-06 12:25:04,045 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:25:04,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:25:04,045 INFO L85 PathProgramCache]: Analyzing trace with hash -360540402, now seen corresponding path program 1 times [2025-02-06 12:25:04,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:25:04,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163383024] [2025-02-06 12:25:04,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:25:04,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:25:04,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:25:04,051 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) [2025-02-06 12:25:04,053 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 [2025-02-06 12:25:04,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-06 12:25:04,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-06 12:25:04,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:25:04,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:25:04,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:25:04,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:25:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:25:04,289 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:25:04,289 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:25:04,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163383024] [2025-02-06 12:25:04,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163383024] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:25:04,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:25:04,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:25:04,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776476256] [2025-02-06 12:25:04,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:25:04,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:25:04,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:25:04,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:25:04,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:25:04,291 INFO L87 Difference]: Start difference. First operand 1185 states and 1259 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:25:04,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:25:04,320 INFO L93 Difference]: Finished difference Result 1188 states and 1263 transitions. [2025-02-06 12:25:04,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:25:04,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 76 [2025-02-06 12:25:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:25:04,324 INFO L225 Difference]: With dead ends: 1188 [2025-02-06 12:25:04,326 INFO L226 Difference]: Without dead ends: 1188 [2025-02-06 12:25:04,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:25:04,329 INFO L435 NwaCegarLoop]: 1061 mSDtfsCounter, 0 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:25:04,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3178 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:25:04,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2025-02-06 12:25:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2025-02-06 12:25:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 753 states have (on average 1.6600265604249669) internal successors, (1250), 1179 states have internal predecessors, (1250), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-06 12:25:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1263 transitions. [2025-02-06 12:25:04,346 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1263 transitions. Word has length 76 [2025-02-06 12:25:04,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:25:04,346 INFO L471 AbstractCegarLoop]: Abstraction has 1188 states and 1263 transitions. [2025-02-06 12:25:04,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:25:04,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1263 transitions. [2025-02-06 12:25:04,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-06 12:25:04,347 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:25:04,347 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, 1] [2025-02-06 12:25:04,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-06 12:25:04,547 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 [2025-02-06 12:25:04,547 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:25:04,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:25:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash -566568104, now seen corresponding path program 1 times [2025-02-06 12:25:04,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:25:04,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918908124] [2025-02-06 12:25:04,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:25:04,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:25:04,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:25:04,551 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) [2025-02-06 12:25:04,552 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 [2025-02-06 12:25:04,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-02-06 12:25:04,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-02-06 12:25:04,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:25:04,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:25:04,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:25:04,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:25:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:25:04,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:25:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:25:04,944 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:25:04,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918908124] [2025-02-06 12:25:04,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918908124] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:25:04,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:25:04,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 12:25:04,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402555055] [2025-02-06 12:25:04,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:25:04,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:25:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:25:04,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:25:04,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:25:04,947 INFO L87 Difference]: Start difference. First operand 1188 states and 1263 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:25:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:25:05,067 INFO L93 Difference]: Finished difference Result 1200 states and 1280 transitions. [2025-02-06 12:25:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:25:05,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2025-02-06 12:25:05,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:25:05,070 INFO L225 Difference]: With dead ends: 1200 [2025-02-06 12:25:05,070 INFO L226 Difference]: Without dead ends: 1200 [2025-02-06 12:25:05,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-06 12:25:05,071 INFO L435 NwaCegarLoop]: 1061 mSDtfsCounter, 7 mSDsluCounter, 3176 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:25:05,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4237 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:25:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2025-02-06 12:25:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1198. [2025-02-06 12:25:05,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 762 states have (on average 1.6601049868766404) internal successors, (1265), 1188 states have internal predecessors, (1265), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-06 12:25:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1278 transitions. [2025-02-06 12:25:05,085 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1278 transitions. Word has length 77 [2025-02-06 12:25:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:25:05,085 INFO L471 AbstractCegarLoop]: Abstraction has 1198 states and 1278 transitions. [2025-02-06 12:25:05,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:25:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1278 transitions. [2025-02-06 12:25:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-06 12:25:05,085 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:25:05,086 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, 1] [2025-02-06 12:25:05,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-06 12:25:05,290 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 [2025-02-06 12:25:05,290 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:25:05,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:25:05,290 INFO L85 PathProgramCache]: Analyzing trace with hash 949377422, now seen corresponding path program 2 times [2025-02-06 12:25:05,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:25:05,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98179807] [2025-02-06 12:25:05,291 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:25:05,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:25:05,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:25:05,293 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) [2025-02-06 12:25:05,294 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 [2025-02-06 12:25:05,434 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-06 12:25:24,684 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-06 12:25:24,684 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:25:24,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:25:24,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-06 12:25:24,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:25:24,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:25:24,794 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:25:24,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 12:25:24,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:25:24,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 12:25:24,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-02-06 12:25:24,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-06 12:25:25,068 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:25:25,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-02-06 12:25:25,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-02-06 12:25:25,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-02-06 12:25:25,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-06 12:25:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 12:25:25,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:25:25,254 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1271 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1271 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2025-02-06 12:25:25,260 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:25:25,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98179807] [2025-02-06 12:25:25,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98179807] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:25:25,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [137374009] [2025-02-06 12:25:25,261 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:25:25,261 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:25:25,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:25:25,281 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 12:25:25,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2025-02-06 12:25:25,505 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-06 12:25:26,288 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-06 12:25:26,288 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:25:26,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:25:26,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:25:26,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:25:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:25:26,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:25:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:25:26,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [137374009] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:25:26,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:25:26,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2025-02-06 12:25:26,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235603034] [2025-02-06 12:25:26,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:25:26,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-06 12:25:26,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:25:26,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-06 12:25:26,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2025-02-06 12:25:26,644 INFO L87 Difference]: Start difference. First operand 1198 states and 1278 transitions. Second operand has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:25:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:25:35,699 INFO L93 Difference]: Finished difference Result 1597 states and 1708 transitions. [2025-02-06 12:25:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-06 12:25:35,699 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 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 80 [2025-02-06 12:25:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:25:35,703 INFO L225 Difference]: With dead ends: 1597 [2025-02-06 12:25:35,703 INFO L226 Difference]: Without dead ends: 1587 [2025-02-06 12:25:35,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=320, Invalid=1845, Unknown=1, NotChecked=90, Total=2256 [2025-02-06 12:25:35,708 INFO L435 NwaCegarLoop]: 701 mSDtfsCounter, 818 mSDsluCounter, 7655 mSDsCounter, 0 mSdLazyCounter, 7559 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 8356 SdHoareTripleChecker+Invalid, 7586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 7559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:25:35,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 8356 Invalid, 7586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 7559 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2025-02-06 12:25:35,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2025-02-06 12:25:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1206. [2025-02-06 12:25:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 771 states have (on average 1.649805447470817) internal successors, (1272), 1196 states have internal predecessors, (1272), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-06 12:25:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1285 transitions. [2025-02-06 12:25:35,723 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1285 transitions. Word has length 80 [2025-02-06 12:25:35,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:25:35,723 INFO L471 AbstractCegarLoop]: Abstraction has 1206 states and 1285 transitions. [2025-02-06 12:25:35,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:25:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1285 transitions. [2025-02-06 12:25:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-02-06 12:25:35,723 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:25:35,723 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, 1] [2025-02-06 12:25:35,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-06 12:25:35,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2025-02-06 12:25:36,124 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,26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-06 12:25:36,124 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:25:36,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:25:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1718606515, now seen corresponding path program 1 times [2025-02-06 12:25:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:25:36,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715263404] [2025-02-06 12:25:36,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:25:36,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:25:36,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:25:36,130 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:25:36,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-06 12:25:36,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-02-06 12:25:36,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-02-06 12:25:36,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:25:36,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:25:36,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 12:25:36,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:25:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:25:36,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:25:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:25:36,956 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:25:36,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715263404] [2025-02-06 12:25:36,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715263404] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:25:36,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:25:36,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-06 12:25:36,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884839051] [2025-02-06 12:25:36,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:25:36,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 12:25:36,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:25:36,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 12:25:36,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-06 12:25:36,957 INFO L87 Difference]: Start difference. First operand 1206 states and 1285 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:25:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:25:38,345 INFO L93 Difference]: Finished difference Result 1230 states and 1324 transitions. [2025-02-06 12:25:38,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 12:25:38,346 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 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 86 [2025-02-06 12:25:38,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:25:38,349 INFO L225 Difference]: With dead ends: 1230 [2025-02-06 12:25:38,349 INFO L226 Difference]: Without dead ends: 1224 [2025-02-06 12:25:38,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 12:25:38,350 INFO L435 NwaCegarLoop]: 1060 mSDtfsCounter, 22 mSDsluCounter, 11629 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 12689 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:25:38,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 12689 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 12:25:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2025-02-06 12:25:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2025-02-06 12:25:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 789 states have (on average 1.641318124207858) internal successors, (1295), 1214 states have internal predecessors, (1295), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-06 12:25:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1308 transitions. [2025-02-06 12:25:38,362 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1308 transitions. Word has length 86 [2025-02-06 12:25:38,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:25:38,362 INFO L471 AbstractCegarLoop]: Abstraction has 1224 states and 1308 transitions. [2025-02-06 12:25:38,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:25:38,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1308 transitions. [2025-02-06 12:25:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-06 12:25:38,363 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:25:38,363 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, 1] [2025-02-06 12:25:38,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-06 12:25:38,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:25:38,564 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-06 12:25:38,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:25:38,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1431850189, now seen corresponding path program 2 times [2025-02-06 12:25:38,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:25:38,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875603781] [2025-02-06 12:25:38,565 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:25:38,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:25:38,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:25:38,568 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) [2025-02-06 12:25:38,570 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 [2025-02-06 12:25:38,783 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 98 statements into 2 equivalence classes.