./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-1.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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:01:08,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:01:08,202 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:01:08,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:01:08,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:01:08,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:01:08,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:01:08,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:01:08,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:01:08,228 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:01:08,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:01:08,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:01:08,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:01:08,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:01:08,229 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:01:08,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:01:08,229 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:01:08,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:01:08,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:01:08,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:01:08,230 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:01:08,230 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:01:08,230 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:01:08,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:01:08,230 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:01:08,230 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:01:08,230 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:01:08,230 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:01:08,230 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:01:08,231 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:01:08,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:01:08,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:01:08,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:01:08,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:01:08,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:01:08,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:01:08,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:01:08,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:01:08,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:01:08,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:01:08,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:01:08,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:01:08,232 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 -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2025-02-08 08:01:08,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:01:08,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:01:08,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:01:08,470 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:01:08,470 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:01:08,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-1.i [2025-02-08 08:01:09,727 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/93e8cf3b4/c6651ced43af4ce0a582a9d8c277ea37/FLAG1a3150c38 [2025-02-08 08:01:10,086 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:01:10,086 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-1.i [2025-02-08 08:01:10,097 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/93e8cf3b4/c6651ced43af4ce0a582a9d8c277ea37/FLAG1a3150c38 [2025-02-08 08:01:10,308 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/93e8cf3b4/c6651ced43af4ce0a582a9d8c277ea37 [2025-02-08 08:01:10,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:01:10,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:01:10,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:01:10,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:01:10,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:01:10,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:01:10" (1/1) ... [2025-02-08 08:01:10,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bea2dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:10, skipping insertion in model container [2025-02-08 08:01:10,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:01:10" (1/1) ... [2025-02-08 08:01:10,343 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:01:10,540 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,557 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,560 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,563 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,566 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,586 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,587 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,588 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,589 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,590 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,591 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,592 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,592 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,595 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:10,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:01:10,607 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-08 08:01:10,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6656b3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:10, skipping insertion in model container [2025-02-08 08:01:10,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:01:10,607 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-08 08:01:10,609 INFO L158 Benchmark]: Toolchain (without parser) took 297.09ms. Allocated memory is still 142.6MB. Free memory was 109.8MB in the beginning and 90.4MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:01:10,609 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:01:10,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.48ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 90.4MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:01:10,610 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.48ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 90.4MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. 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_test3-1.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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:01:12,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:01:12,620 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 08:01:12,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:01:12,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:01:12,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:01:12,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:01:12,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:01:12,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:01:12,643 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:01:12,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:01:12,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:01:12,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:01:12,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:01:12,644 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:01:12,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:01:12,644 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:01:12,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:01:12,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:01:12,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:01:12,644 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:01:12,644 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:01:12,644 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:01:12,645 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:01:12,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:01:12,645 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:01:12,646 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 08:01:12,646 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 08:01:12,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:01:12,646 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:01:12,646 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:01:12,646 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:01:12,646 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 -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2025-02-08 08:01:12,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:01:12,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:01:12,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:01:12,897 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:01:12,897 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:01:12,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-1.i [2025-02-08 08:01:14,112 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/90c540782/2e315a1ba2ba4971a78948c0260ec007/FLAG4bf076f90 [2025-02-08 08:01:14,330 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:01:14,330 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-1.i [2025-02-08 08:01:14,340 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/90c540782/2e315a1ba2ba4971a78948c0260ec007/FLAG4bf076f90 [2025-02-08 08:01:14,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/90c540782/2e315a1ba2ba4971a78948c0260ec007 [2025-02-08 08:01:14,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:01:14,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:01:14,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:01:14,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:01:14,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:01:14,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:01:14" (1/1) ... [2025-02-08 08:01:14,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f7db69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:14, skipping insertion in model container [2025-02-08 08:01:14,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:01:14" (1/1) ... [2025-02-08 08:01:14,412 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:01:14,700 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,737 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,740 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,747 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,755 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,788 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,791 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,793 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,793 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,797 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,799 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,802 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,802 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,810 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:01:14,822 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-08 08:01:14,829 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:01:14,850 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,869 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,873 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,875 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,882 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,902 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,906 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,908 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,910 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,912 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,916 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,916 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,917 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,919 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:01:14,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:01:14,932 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:01:14,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:01:15,017 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:01:15,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15 WrapperNode [2025-02-08 08:01:15,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:01:15,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:01:15,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:01:15,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:01:15,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,099 INFO L138 Inliner]: procedures = 180, calls = 274, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1005 [2025-02-08 08:01:15,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:01:15,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:01:15,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:01:15,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:01:15,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,119 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,208 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 218, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2025-02-08 08:01:15,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,229 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:01:15,254 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:01:15,254 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:01:15,254 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:01:15,255 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (1/1) ... [2025-02-08 08:01:15,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:01:15,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:15,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:01:15,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 08:01:15,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 08:01:15,333 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 08:01:15,333 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 08:01:15,333 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 08:01:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 08:01:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-08 08:01:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:01:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:01:15,519 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:01:15,521 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:01:18,025 INFO L1324 $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; [2025-02-08 08:01:18,118 INFO L? ?]: Removed 1080 outVars from TransFormulas that were not future-live. [2025-02-08 08:01:18,118 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:01:18,147 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:01:18,148 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:01:18,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:01:18 BoogieIcfgContainer [2025-02-08 08:01:18,148 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:01:18,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:01:18,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:01:18,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:01:18,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:01:14" (1/3) ... [2025-02-08 08:01:18,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dab050a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:01:18, skipping insertion in model container [2025-02-08 08:01:18,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:01:15" (2/3) ... [2025-02-08 08:01:18,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dab050a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:01:18, skipping insertion in model container [2025-02-08 08:01:18,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:01:18" (3/3) ... [2025-02-08 08:01:18,170 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test3-1.i [2025-02-08 08:01:18,179 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:01:18,181 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_nondet_test3-1.i that has 5 procedures, 1079 locations, 1 initial locations, 38 loop locations, and 525 error locations. [2025-02-08 08:01:18,215 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:01:18,222 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;@2ac54efa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:01:18,223 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2025-02-08 08:01:18,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 1069 states, 539 states have (on average 2.1910946196660483) internal successors, (1181), 1062 states have internal predecessors, (1181), 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) [2025-02-08 08:01:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 08:01:18,230 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:18,231 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 08:01:18,231 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:18,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:18,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1210225, now seen corresponding path program 1 times [2025-02-08 08:01:18,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:18,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802741381] [2025-02-08 08:01:18,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:18,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:18,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:18,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:18,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:01:18,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:01:18,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:01:18,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:18,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:18,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:01:18,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:18,416 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48| (_ bv0 1))))) is different from true [2025-02-08 08:01:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:18,419 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:18,419 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:18,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802741381] [2025-02-08 08:01:18,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802741381] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:18,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:18,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:18,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198823289] [2025-02-08 08:01:18,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:18,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:18,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:18,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:18,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:01:18,440 INFO L87 Difference]: Start difference. First operand has 1069 states, 539 states have (on average 2.1910946196660483) internal successors, (1181), 1062 states have internal predecessors, (1181), 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 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:19,987 INFO L93 Difference]: Finished difference Result 1463 states and 1566 transitions. [2025-02-08 08:01:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:19,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-08 08:01:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:19,999 INFO L225 Difference]: With dead ends: 1463 [2025-02-08 08:01:19,999 INFO L226 Difference]: Without dead ends: 1460 [2025-02-08 08:01:20,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:01:20,002 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 430 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1567 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:20,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1505 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 746 Invalid, 0 Unknown, 1567 Unchecked, 1.5s Time] [2025-02-08 08:01:20,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2025-02-08 08:01:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1057. [2025-02-08 08:01:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 533 states have (on average 2.071294559099437) internal successors, (1104), 1050 states have internal predecessors, (1104), 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) [2025-02-08 08:01:20,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1114 transitions. [2025-02-08 08:01:20,067 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1114 transitions. Word has length 3 [2025-02-08 08:01:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:20,067 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1114 transitions. [2025-02-08 08:01:20,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1114 transitions. [2025-02-08 08:01:20,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 08:01:20,068 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:20,068 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 08:01:20,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:20,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:20,273 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:20,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1211425, now seen corresponding path program 1 times [2025-02-08 08:01:20,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:20,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015958060] [2025-02-08 08:01:20,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:20,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:20,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:20,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:20,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:01:20,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:01:20,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:01:20,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:20,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:20,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:20,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:20,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:01:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:20,392 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:20,392 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:20,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015958060] [2025-02-08 08:01:20,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015958060] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:20,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:20,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:01:20,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473547250] [2025-02-08 08:01:20,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:20,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:01:20,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:20,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:01:20,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:20,393 INFO L87 Difference]: Start difference. First operand 1057 states and 1114 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:21,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:21,345 INFO L93 Difference]: Finished difference Result 1064 states and 1123 transitions. [2025-02-08 08:01:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:01:21,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-08 08:01:21,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:21,352 INFO L225 Difference]: With dead ends: 1064 [2025-02-08 08:01:21,352 INFO L226 Difference]: Without dead ends: 1064 [2025-02-08 08:01:21,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:21,353 INFO L435 NwaCegarLoop]: 640 mSDtfsCounter, 975 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:21,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 701 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-08 08:01:21,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2025-02-08 08:01:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1056. [2025-02-08 08:01:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 542 states have (on average 2.0387453874538743) internal successors, (1105), 1048 states have internal predecessors, (1105), 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) [2025-02-08 08:01:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1115 transitions. [2025-02-08 08:01:21,394 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1115 transitions. Word has length 3 [2025-02-08 08:01:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:21,394 INFO L471 AbstractCegarLoop]: Abstraction has 1056 states and 1115 transitions. [2025-02-08 08:01:21,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1115 transitions. [2025-02-08 08:01:21,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 08:01:21,394 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:21,395 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 08:01:21,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 08:01:21,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:21,595 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:21,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:21,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1211426, now seen corresponding path program 1 times [2025-02-08 08:01:21,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:21,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357675233] [2025-02-08 08:01:21,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:21,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:21,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:21,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:21,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:01:21,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:01:21,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:01:21,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:21,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:21,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:01:21,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:21,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:21,694 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:21,694 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357675233] [2025-02-08 08:01:21,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357675233] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:21,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:21,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:01:21,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025853397] [2025-02-08 08:01:21,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:21,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:01:21,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:21,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:01:21,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:21,695 INFO L87 Difference]: Start difference. First operand 1056 states and 1115 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:23,341 INFO L93 Difference]: Finished difference Result 1468 states and 1561 transitions. [2025-02-08 08:01:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:01:23,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-08 08:01:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:23,345 INFO L225 Difference]: With dead ends: 1468 [2025-02-08 08:01:23,345 INFO L226 Difference]: Without dead ends: 1468 [2025-02-08 08:01:23,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:23,346 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 440 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:23,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1500 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 08:01:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2025-02-08 08:01:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1274. [2025-02-08 08:01:23,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 760 states have (on average 2.0210526315789474) internal successors, (1536), 1265 states have internal predecessors, (1536), 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) [2025-02-08 08:01:23,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1548 transitions. [2025-02-08 08:01:23,363 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1548 transitions. Word has length 3 [2025-02-08 08:01:23,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:23,363 INFO L471 AbstractCegarLoop]: Abstraction has 1274 states and 1548 transitions. [2025-02-08 08:01:23,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:23,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1548 transitions. [2025-02-08 08:01:23,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 08:01:23,363 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:23,363 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:23,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 08:01:23,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:23,565 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:23,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1307600859, now seen corresponding path program 1 times [2025-02-08 08:01:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:23,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126829552] [2025-02-08 08:01:23,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:23,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:23,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:23,572 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:23,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 08:01:23,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:01:23,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:01:23,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:23,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:23,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:01:23,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:23,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:23,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 08:01:23,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 08:01:23,764 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 08:01:23,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 08:01:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:23,780 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:23,780 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:23,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126829552] [2025-02-08 08:01:23,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126829552] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:23,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:23,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:23,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755305871] [2025-02-08 08:01:23,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:23,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:23,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:23,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:23,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:23,781 INFO L87 Difference]: Start difference. First operand 1274 states and 1548 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:25,394 INFO L93 Difference]: Finished difference Result 1276 states and 1551 transitions. [2025-02-08 08:01:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:25,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 08:01:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:25,398 INFO L225 Difference]: With dead ends: 1276 [2025-02-08 08:01:25,399 INFO L226 Difference]: Without dead ends: 1276 [2025-02-08 08:01:25,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:25,400 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 2038 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:25,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2043 Valid, 414 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 08:01:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2025-02-08 08:01:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1044. [2025-02-08 08:01:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 542 states have (on average 2.0129151291512914) internal successors, (1091), 1036 states have internal predecessors, (1091), 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) [2025-02-08 08:01:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1101 transitions. [2025-02-08 08:01:25,418 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1101 transitions. Word has length 8 [2025-02-08 08:01:25,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:25,418 INFO L471 AbstractCegarLoop]: Abstraction has 1044 states and 1101 transitions. [2025-02-08 08:01:25,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1101 transitions. [2025-02-08 08:01:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 08:01:25,419 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:25,419 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:25,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 08:01:25,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:25,620 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr516REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:25,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:25,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1880922071, now seen corresponding path program 1 times [2025-02-08 08:01:25,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:25,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598895431] [2025-02-08 08:01:25,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:25,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:25,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:25,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:25,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:01:25,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 08:01:25,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 08:01:25,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:25,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:25,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:25,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:25,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:01:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:25,774 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:25,774 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598895431] [2025-02-08 08:01:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598895431] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:25,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:25,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:25,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770107367] [2025-02-08 08:01:25,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:25,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:01:25,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:25,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:01:25,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:25,775 INFO L87 Difference]: Start difference. First operand 1044 states and 1101 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:27,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:27,384 INFO L93 Difference]: Finished difference Result 1389 states and 1477 transitions. [2025-02-08 08:01:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:01:27,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 08:01:27,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:27,388 INFO L225 Difference]: With dead ends: 1389 [2025-02-08 08:01:27,388 INFO L226 Difference]: Without dead ends: 1389 [2025-02-08 08:01:27,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:27,393 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 941 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:27,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1226 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 08:01:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2025-02-08 08:01:27,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 996. [2025-02-08 08:01:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 542 states have (on average 1.9243542435424354) internal successors, (1043), 988 states have internal predecessors, (1043), 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) [2025-02-08 08:01:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1053 transitions. [2025-02-08 08:01:27,421 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1053 transitions. Word has length 9 [2025-02-08 08:01:27,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:27,421 INFO L471 AbstractCegarLoop]: Abstraction has 996 states and 1053 transitions. [2025-02-08 08:01:27,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1053 transitions. [2025-02-08 08:01:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 08:01:27,421 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:27,421 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:27,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:27,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:27,622 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:27,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:27,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1880922072, now seen corresponding path program 1 times [2025-02-08 08:01:27,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:27,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611676452] [2025-02-08 08:01:27,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:27,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:27,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:27,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:27,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:01:27,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 08:01:27,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 08:01:27,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:27,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:27,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:01:27,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:27,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:27,816 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:27,816 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:27,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611676452] [2025-02-08 08:01:27,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611676452] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:27,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:27,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:27,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608030706] [2025-02-08 08:01:27,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:27,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:01:27,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:27,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:01:27,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:27,817 INFO L87 Difference]: Start difference. First operand 996 states and 1053 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:29,435 INFO L93 Difference]: Finished difference Result 1478 states and 1569 transitions. [2025-02-08 08:01:29,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:01:29,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 08:01:29,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:29,439 INFO L225 Difference]: With dead ends: 1478 [2025-02-08 08:01:29,439 INFO L226 Difference]: Without dead ends: 1478 [2025-02-08 08:01:29,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:29,439 INFO L435 NwaCegarLoop]: 1162 mSDtfsCounter, 702 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:29,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1597 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 08:01:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2025-02-08 08:01:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1025. [2025-02-08 08:01:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 581 states have (on average 1.9087779690189328) internal successors, (1109), 1017 states have internal predecessors, (1109), 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) [2025-02-08 08:01:29,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1119 transitions. [2025-02-08 08:01:29,457 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1119 transitions. Word has length 9 [2025-02-08 08:01:29,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:29,457 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1119 transitions. [2025-02-08 08:01:29,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1119 transitions. [2025-02-08 08:01:29,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 08:01:29,458 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:29,458 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:29,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 08:01:29,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:29,662 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:29,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:29,663 INFO L85 PathProgramCache]: Analyzing trace with hash -7201182, now seen corresponding path program 1 times [2025-02-08 08:01:29,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:29,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381188456] [2025-02-08 08:01:29,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:29,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:29,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:29,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:29,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 08:01:29,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:01:29,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:01:29,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:29,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:29,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:01:29,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:29,825 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_49| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49|)))) is different from true [2025-02-08 08:01:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:29,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:29,826 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:29,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381188456] [2025-02-08 08:01:29,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381188456] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:29,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:29,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:29,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082746442] [2025-02-08 08:01:29,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:29,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:29,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:29,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:29,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:01:29,827 INFO L87 Difference]: Start difference. First operand 1025 states and 1119 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:30,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:30,988 INFO L93 Difference]: Finished difference Result 1428 states and 1554 transitions. [2025-02-08 08:01:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:30,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-08 08:01:30,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:30,999 INFO L225 Difference]: With dead ends: 1428 [2025-02-08 08:01:30,999 INFO L226 Difference]: Without dead ends: 1427 [2025-02-08 08:01:31,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:01:31,004 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 419 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1468 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:31,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1423 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 654 Invalid, 0 Unknown, 1468 Unchecked, 1.1s Time] [2025-02-08 08:01:31,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2025-02-08 08:01:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1162. [2025-02-08 08:01:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 716 states have (on average 1.8868715083798884) internal successors, (1351), 1152 states have internal predecessors, (1351), 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) [2025-02-08 08:01:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1365 transitions. [2025-02-08 08:01:31,036 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1365 transitions. Word has length 13 [2025-02-08 08:01:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:31,036 INFO L471 AbstractCegarLoop]: Abstraction has 1162 states and 1365 transitions. [2025-02-08 08:01:31,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1365 transitions. [2025-02-08 08:01:31,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 08:01:31,037 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:31,037 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:31,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 08:01:31,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:31,242 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:31,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:31,242 INFO L85 PathProgramCache]: Analyzing trace with hash -7200861, now seen corresponding path program 1 times [2025-02-08 08:01:31,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:31,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526006173] [2025-02-08 08:01:31,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:31,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:31,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:31,246 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:31,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 08:01:31,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:01:31,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:01:31,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:31,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:31,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:01:31,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:31,417 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:31,417 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:31,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526006173] [2025-02-08 08:01:31,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526006173] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:31,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:31,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:01:31,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915266267] [2025-02-08 08:01:31,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:31,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:31,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:31,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:31,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:31,418 INFO L87 Difference]: Start difference. First operand 1162 states and 1365 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:31,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:31,817 INFO L93 Difference]: Finished difference Result 1541 states and 1751 transitions. [2025-02-08 08:01:31,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:31,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-08 08:01:31,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:31,821 INFO L225 Difference]: With dead ends: 1541 [2025-02-08 08:01:31,821 INFO L226 Difference]: Without dead ends: 1539 [2025-02-08 08:01:31,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:31,821 INFO L435 NwaCegarLoop]: 1104 mSDtfsCounter, 451 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:31,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 3056 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 08:01:31,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2025-02-08 08:01:31,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1359. [2025-02-08 08:01:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 913 states have (on average 1.87842278203724) internal successors, (1715), 1349 states have internal predecessors, (1715), 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) [2025-02-08 08:01:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1729 transitions. [2025-02-08 08:01:31,836 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1729 transitions. Word has length 13 [2025-02-08 08:01:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:31,837 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1729 transitions. [2025-02-08 08:01:31,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:31,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1729 transitions. [2025-02-08 08:01:31,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 08:01:31,838 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:31,838 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:31,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:32,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:32,040 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr193REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:32,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2076411147, now seen corresponding path program 1 times [2025-02-08 08:01:32,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:32,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823079573] [2025-02-08 08:01:32,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:32,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:32,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:32,043 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:32,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 08:01:32,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:01:32,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:01:32,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:32,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:32,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:01:32,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:32,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:32,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:32,256 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:32,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823079573] [2025-02-08 08:01:32,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823079573] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:32,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:32,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:32,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241947469] [2025-02-08 08:01:32,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:32,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:32,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:32,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:32,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:32,257 INFO L87 Difference]: Start difference. First operand 1359 states and 1729 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:34,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:34,314 INFO L93 Difference]: Finished difference Result 1862 states and 2354 transitions. [2025-02-08 08:01:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:34,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 08:01:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:34,320 INFO L225 Difference]: With dead ends: 1862 [2025-02-08 08:01:34,320 INFO L226 Difference]: Without dead ends: 1862 [2025-02-08 08:01:34,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:34,321 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 431 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:34,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1911 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-08 08:01:34,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2025-02-08 08:01:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1651. [2025-02-08 08:01:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1203 states have (on average 1.8786367414796343) internal successors, (2260), 1639 states have internal predecessors, (2260), 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) [2025-02-08 08:01:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2278 transitions. [2025-02-08 08:01:34,343 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2278 transitions. Word has length 15 [2025-02-08 08:01:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:34,343 INFO L471 AbstractCegarLoop]: Abstraction has 1651 states and 2278 transitions. [2025-02-08 08:01:34,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2278 transitions. [2025-02-08 08:01:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 08:01:34,343 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:34,343 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:34,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 08:01:34,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:34,548 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr192REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:34,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:34,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2076411146, now seen corresponding path program 1 times [2025-02-08 08:01:34,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:34,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243699404] [2025-02-08 08:01:34,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:34,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:34,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:34,552 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:34,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 08:01:34,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:01:34,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:01:34,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:34,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:34,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:01:34,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:34,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:01:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:34,682 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:34,682 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:34,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243699404] [2025-02-08 08:01:34,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243699404] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:34,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:34,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:01:34,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477241402] [2025-02-08 08:01:34,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:34,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:34,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:34,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:34,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:34,683 INFO L87 Difference]: Start difference. First operand 1651 states and 2278 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:35,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:35,931 INFO L93 Difference]: Finished difference Result 1661 states and 2244 transitions. [2025-02-08 08:01:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:35,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 08:01:35,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:35,936 INFO L225 Difference]: With dead ends: 1661 [2025-02-08 08:01:35,936 INFO L226 Difference]: Without dead ends: 1661 [2025-02-08 08:01:35,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:35,936 INFO L435 NwaCegarLoop]: 596 mSDtfsCounter, 970 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:35,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1150 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-08 08:01:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2025-02-08 08:01:35,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1628. [2025-02-08 08:01:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1203 states have (on average 1.8204488778054864) internal successors, (2190), 1616 states have internal predecessors, (2190), 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) [2025-02-08 08:01:35,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2208 transitions. [2025-02-08 08:01:35,955 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2208 transitions. Word has length 15 [2025-02-08 08:01:35,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:35,955 INFO L471 AbstractCegarLoop]: Abstraction has 1628 states and 2208 transitions. [2025-02-08 08:01:35,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:35,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2208 transitions. [2025-02-08 08:01:35,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 08:01:35,956 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:35,956 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:35,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 08:01:36,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:36,157 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr169REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:36,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:36,157 INFO L85 PathProgramCache]: Analyzing trace with hash -55808121, now seen corresponding path program 1 times [2025-02-08 08:01:36,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:36,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509616399] [2025-02-08 08:01:36,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:36,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:36,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:36,160 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:36,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 08:01:36,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:01:36,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:01:36,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:36,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:36,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:36,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:36,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:36,276 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:36,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509616399] [2025-02-08 08:01:36,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509616399] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:36,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:36,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:36,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733229005] [2025-02-08 08:01:36,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:36,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:36,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:36,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:36,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:36,277 INFO L87 Difference]: Start difference. First operand 1628 states and 2208 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:36,330 INFO L93 Difference]: Finished difference Result 1562 states and 2083 transitions. [2025-02-08 08:01:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:01:36,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-08 08:01:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:36,334 INFO L225 Difference]: With dead ends: 1562 [2025-02-08 08:01:36,334 INFO L226 Difference]: Without dead ends: 1562 [2025-02-08 08:01:36,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:36,335 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 45 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:36,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2770 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:01:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2025-02-08 08:01:36,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2025-02-08 08:01:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1156 states have (on average 1.7863321799307958) internal successors, (2065), 1550 states have internal predecessors, (2065), 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) [2025-02-08 08:01:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2083 transitions. [2025-02-08 08:01:36,352 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2083 transitions. Word has length 16 [2025-02-08 08:01:36,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:36,352 INFO L471 AbstractCegarLoop]: Abstraction has 1562 states and 2083 transitions. [2025-02-08 08:01:36,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2083 transitions. [2025-02-08 08:01:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 08:01:36,353 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:36,353 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:36,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 08:01:36,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:36,554 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr508REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:36,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1380000234, now seen corresponding path program 1 times [2025-02-08 08:01:36,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:36,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291405307] [2025-02-08 08:01:36,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:36,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:36,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:36,557 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:36,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 08:01:36,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:01:36,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:01:36,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:36,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:36,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:01:36,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:36,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:01:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:36,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:36,728 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:36,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291405307] [2025-02-08 08:01:36,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291405307] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:36,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:36,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:01:36,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256353069] [2025-02-08 08:01:36,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:36,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:36,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:36,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:36,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:36,730 INFO L87 Difference]: Start difference. First operand 1562 states and 2083 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:38,162 INFO L93 Difference]: Finished difference Result 2002 states and 2628 transitions. [2025-02-08 08:01:38,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:38,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-08 08:01:38,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:38,167 INFO L225 Difference]: With dead ends: 2002 [2025-02-08 08:01:38,167 INFO L226 Difference]: Without dead ends: 2002 [2025-02-08 08:01:38,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:38,169 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 905 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:38,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1641 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-08 08:01:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2025-02-08 08:01:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1539. [2025-02-08 08:01:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1156 states have (on average 1.7465397923875432) internal successors, (2019), 1527 states have internal predecessors, (2019), 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) [2025-02-08 08:01:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 2037 transitions. [2025-02-08 08:01:38,201 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 2037 transitions. Word has length 19 [2025-02-08 08:01:38,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:38,201 INFO L471 AbstractCegarLoop]: Abstraction has 1539 states and 2037 transitions. [2025-02-08 08:01:38,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 2037 transitions. [2025-02-08 08:01:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 08:01:38,203 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:38,203 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:38,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:38,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:38,404 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:38,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:38,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1380000235, now seen corresponding path program 1 times [2025-02-08 08:01:38,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:38,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085168896] [2025-02-08 08:01:38,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:38,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:38,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:38,411 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:38,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 08:01:38,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:01:38,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:01:38,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:38,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:38,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:01:38,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:38,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:38,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:38,607 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085168896] [2025-02-08 08:01:38,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085168896] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:38,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:38,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:01:38,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771888622] [2025-02-08 08:01:38,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:38,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:38,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:38,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:38,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:38,608 INFO L87 Difference]: Start difference. First operand 1539 states and 2037 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:40,797 INFO L93 Difference]: Finished difference Result 2189 states and 2807 transitions. [2025-02-08 08:01:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:40,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-08 08:01:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:40,802 INFO L225 Difference]: With dead ends: 2189 [2025-02-08 08:01:40,802 INFO L226 Difference]: Without dead ends: 2189 [2025-02-08 08:01:40,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:40,803 INFO L435 NwaCegarLoop]: 1103 mSDtfsCounter, 739 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:40,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 2225 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-08 08:01:40,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2025-02-08 08:01:40,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 1653. [2025-02-08 08:01:40,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1270 states have (on average 1.6984251968503936) internal successors, (2157), 1641 states have internal predecessors, (2157), 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) [2025-02-08 08:01:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2175 transitions. [2025-02-08 08:01:40,820 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2175 transitions. Word has length 19 [2025-02-08 08:01:40,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:40,820 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2175 transitions. [2025-02-08 08:01:40,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:40,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2175 transitions. [2025-02-08 08:01:40,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-08 08:01:40,821 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:40,821 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:40,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 08:01:41,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:41,022 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:41,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:41,022 INFO L85 PathProgramCache]: Analyzing trace with hash -212335079, now seen corresponding path program 1 times [2025-02-08 08:01:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:41,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8260689] [2025-02-08 08:01:41,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:41,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:41,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:41,029 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:41,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 08:01:41,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 08:01:41,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 08:01:41,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:41,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:41,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:01:41,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:41,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:41,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:01:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:41,768 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:41,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8260689] [2025-02-08 08:01:41,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8260689] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:01:41,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:01:41,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 08:01:41,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961494570] [2025-02-08 08:01:41,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:01:41,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:01:41,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:41,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:01:41,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:01:41,769 INFO L87 Difference]: Start difference. First operand 1653 states and 2175 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:47,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:47,093 INFO L93 Difference]: Finished difference Result 2545 states and 3297 transitions. [2025-02-08 08:01:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:01:47,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-02-08 08:01:47,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:47,099 INFO L225 Difference]: With dead ends: 2545 [2025-02-08 08:01:47,099 INFO L226 Difference]: Without dead ends: 2545 [2025-02-08 08:01:47,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-08 08:01:47,100 INFO L435 NwaCegarLoop]: 1130 mSDtfsCounter, 2214 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 3756 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:47,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2216 Valid, 3756 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2025-02-08 08:01:47,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2025-02-08 08:01:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1817. [2025-02-08 08:01:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1434 states have (on average 1.6659693165969316) internal successors, (2389), 1805 states have internal predecessors, (2389), 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) [2025-02-08 08:01:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2407 transitions. [2025-02-08 08:01:47,149 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2407 transitions. Word has length 38 [2025-02-08 08:01:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:47,149 INFO L471 AbstractCegarLoop]: Abstraction has 1817 states and 2407 transitions. [2025-02-08 08:01:47,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2407 transitions. [2025-02-08 08:01:47,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-08 08:01:47,151 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:47,151 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] [2025-02-08 08:01:47,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 08:01:47,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:47,352 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:47,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:47,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1482816140, now seen corresponding path program 1 times [2025-02-08 08:01:47,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:47,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65057185] [2025-02-08 08:01:47,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:47,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:47,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:47,355 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:47,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 08:01:47,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-08 08:01:47,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-08 08:01:47,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:47,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:47,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:47,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:47,495 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:47,495 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:47,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65057185] [2025-02-08 08:01:47,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65057185] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:47,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:47,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:01:47,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449048597] [2025-02-08 08:01:47,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:47,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:01:47,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:47,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:01:47,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:47,496 INFO L87 Difference]: Start difference. First operand 1817 states and 2407 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:47,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:47,544 INFO L93 Difference]: Finished difference Result 1600 states and 1852 transitions. [2025-02-08 08:01:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:01:47,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2025-02-08 08:01:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:47,548 INFO L225 Difference]: With dead ends: 1600 [2025-02-08 08:01:47,548 INFO L226 Difference]: Without dead ends: 1600 [2025-02-08 08:01:47,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:01:47,549 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 107 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1850 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 [2025-02-08 08:01:47,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1850 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:01:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2025-02-08 08:01:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1431. [2025-02-08 08:01:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1050 states have (on average 1.5714285714285714) internal successors, (1650), 1421 states have internal predecessors, (1650), 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) [2025-02-08 08:01:47,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1664 transitions. [2025-02-08 08:01:47,559 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1664 transitions. Word has length 49 [2025-02-08 08:01:47,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:47,559 INFO L471 AbstractCegarLoop]: Abstraction has 1431 states and 1664 transitions. [2025-02-08 08:01:47,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:47,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1664 transitions. [2025-02-08 08:01:47,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-08 08:01:47,560 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:47,560 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:47,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:47,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:47,760 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:47,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:47,761 INFO L85 PathProgramCache]: Analyzing trace with hash 109827129, now seen corresponding path program 1 times [2025-02-08 08:01:47,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:47,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115410134] [2025-02-08 08:01:47,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:47,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:47,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:47,763 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:47,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 08:01:47,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-08 08:01:47,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-08 08:01:47,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:47,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:47,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:47,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:47,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:47,911 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:47,912 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:47,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115410134] [2025-02-08 08:01:47,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115410134] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:47,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:47,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104929127] [2025-02-08 08:01:47,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:47,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:47,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:47,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:47,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:47,913 INFO L87 Difference]: Start difference. First operand 1431 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-02-08 08:01:47,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:47,951 INFO L93 Difference]: Finished difference Result 1413 states and 1634 transitions. [2025-02-08 08:01:47,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:01:47,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 52 [2025-02-08 08:01:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:47,954 INFO L225 Difference]: With dead ends: 1413 [2025-02-08 08:01:47,954 INFO L226 Difference]: Without dead ends: 1413 [2025-02-08 08:01:47,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:47,954 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 27 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:47,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2693 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:01:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2025-02-08 08:01:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1413. [2025-02-08 08:01:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1032 states have (on average 1.569767441860465) internal successors, (1620), 1403 states have internal predecessors, (1620), 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) [2025-02-08 08:01:47,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1634 transitions. [2025-02-08 08:01:47,963 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1634 transitions. Word has length 52 [2025-02-08 08:01:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:47,963 INFO L471 AbstractCegarLoop]: Abstraction has 1413 states and 1634 transitions. [2025-02-08 08:01:47,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-02-08 08:01:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1634 transitions. [2025-02-08 08:01:47,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-08 08:01:47,964 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:47,964 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:47,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 08:01:48,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:48,168 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:48,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:48,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1372573612, now seen corresponding path program 1 times [2025-02-08 08:01:48,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:48,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586644457] [2025-02-08 08:01:48,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:48,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:48,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:48,171 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:48,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 08:01:48,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-08 08:01:48,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 08:01:48,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:48,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:48,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:48,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:48,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:48,358 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:48,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586644457] [2025-02-08 08:01:48,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586644457] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:48,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:48,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:48,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039012500] [2025-02-08 08:01:48,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:48,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:48,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:48,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:48,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:48,360 INFO L87 Difference]: Start difference. First operand 1413 states and 1634 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:48,417 INFO L93 Difference]: Finished difference Result 1102 states and 1198 transitions. [2025-02-08 08:01:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:01:48,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2025-02-08 08:01:48,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:48,419 INFO L225 Difference]: With dead ends: 1102 [2025-02-08 08:01:48,419 INFO L226 Difference]: Without dead ends: 1102 [2025-02-08 08:01:48,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:48,419 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 56 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:48,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2519 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:01:48,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2025-02-08 08:01:48,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1100. [2025-02-08 08:01:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 742 states have (on average 1.5929919137466306) internal successors, (1182), 1090 states have internal predecessors, (1182), 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) [2025-02-08 08:01:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1196 transitions. [2025-02-08 08:01:48,430 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1196 transitions. Word has length 54 [2025-02-08 08:01:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:48,431 INFO L471 AbstractCegarLoop]: Abstraction has 1100 states and 1196 transitions. [2025-02-08 08:01:48,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1196 transitions. [2025-02-08 08:01:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 08:01:48,432 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:48,432 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] [2025-02-08 08:01:48,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:48,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:48,632 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:48,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:48,633 INFO L85 PathProgramCache]: Analyzing trace with hash -396913407, now seen corresponding path program 1 times [2025-02-08 08:01:48,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:48,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033544761] [2025-02-08 08:01:48,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:48,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:48,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:48,635 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:48,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 08:01:48,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 08:01:48,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 08:01:48,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:48,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:48,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:01:48,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:48,790 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 08:01:48,790 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 08:01:48,790 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 08:01:48,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-02-08 08:01:48,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 08:01:48,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-02-08 08:01:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:48,885 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:48,885 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:48,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033544761] [2025-02-08 08:01:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033544761] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:48,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:01:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384404162] [2025-02-08 08:01:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:48,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:01:48,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:48,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:01:48,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:01:48,886 INFO L87 Difference]: Start difference. First operand 1100 states and 1196 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2025-02-08 08:01:49,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:49,197 INFO L93 Difference]: Finished difference Result 1779 states and 1911 transitions. [2025-02-08 08:01:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:01:49,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 60 [2025-02-08 08:01:49,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:49,201 INFO L225 Difference]: With dead ends: 1779 [2025-02-08 08:01:49,201 INFO L226 Difference]: Without dead ends: 1775 [2025-02-08 08:01:49,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:01:49,202 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 1642 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 4079 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:49,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 4079 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 08:01:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2025-02-08 08:01:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1047. [2025-02-08 08:01:49,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 690 states have (on average 1.636231884057971) internal successors, (1129), 1038 states have internal predecessors, (1129), 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) [2025-02-08 08:01:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1141 transitions. [2025-02-08 08:01:49,224 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1141 transitions. Word has length 60 [2025-02-08 08:01:49,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:49,224 INFO L471 AbstractCegarLoop]: Abstraction has 1047 states and 1141 transitions. [2025-02-08 08:01:49,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2025-02-08 08:01:49,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1141 transitions. [2025-02-08 08:01:49,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 08:01:49,225 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:49,225 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:49,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:49,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:49,426 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:49,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:49,426 INFO L85 PathProgramCache]: Analyzing trace with hash -699820772, now seen corresponding path program 1 times [2025-02-08 08:01:49,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:49,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642253103] [2025-02-08 08:01:49,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:49,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:49,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:49,428 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:49,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 08:01:49,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 08:01:49,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 08:01:49,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:49,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:49,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:01:49,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:49,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:01:49,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:49,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 08:01:49,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 08:01:50,006 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 08:01:50,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 08:01:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:50,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:50,013 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:50,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642253103] [2025-02-08 08:01:50,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642253103] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:50,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:50,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:01:50,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688877418] [2025-02-08 08:01:50,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:50,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:50,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:50,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:50,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:50,014 INFO L87 Difference]: Start difference. First operand 1047 states and 1141 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:51,493 INFO L93 Difference]: Finished difference Result 1384 states and 1502 transitions. [2025-02-08 08:01:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-02-08 08:01:51,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:51,496 INFO L225 Difference]: With dead ends: 1384 [2025-02-08 08:01:51,496 INFO L226 Difference]: Without dead ends: 1384 [2025-02-08 08:01:51,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:51,496 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 1075 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:51,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 486 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-08 08:01:51,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2025-02-08 08:01:51,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 970. [2025-02-08 08:01:51,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 651 states have (on average 1.5591397849462365) internal successors, (1015), 961 states have internal predecessors, (1015), 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) [2025-02-08 08:01:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1027 transitions. [2025-02-08 08:01:51,506 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1027 transitions. Word has length 62 [2025-02-08 08:01:51,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:51,506 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1027 transitions. [2025-02-08 08:01:51,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:51,507 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1027 transitions. [2025-02-08 08:01:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-08 08:01:51,507 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:51,507 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:51,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:51,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:51,708 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:51,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1402426709, now seen corresponding path program 1 times [2025-02-08 08:01:51,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:51,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010689688] [2025-02-08 08:01:51,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:51,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:51,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:51,710 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:51,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 08:01:51,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-08 08:01:51,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 08:01:51,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:51,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:51,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:01:51,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:51,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:01:51,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:01:51,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-08 08:01:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:51,953 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:51,953 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010689688] [2025-02-08 08:01:51,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010689688] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:51,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:51,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:51,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877229369] [2025-02-08 08:01:51,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:51,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:01:51,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:51,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:01:51,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:51,954 INFO L87 Difference]: Start difference. First operand 970 states and 1027 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:53,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:53,400 INFO L93 Difference]: Finished difference Result 969 states and 1026 transitions. [2025-02-08 08:01:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:01:53,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-08 08:01:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:53,402 INFO L225 Difference]: With dead ends: 969 [2025-02-08 08:01:53,402 INFO L226 Difference]: Without dead ends: 969 [2025-02-08 08:01:53,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:01:53,403 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 2 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:53,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2185 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-08 08:01:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2025-02-08 08:01:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2025-02-08 08:01:53,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 651 states have (on average 1.5576036866359446) internal successors, (1014), 960 states have internal predecessors, (1014), 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) [2025-02-08 08:01:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1026 transitions. [2025-02-08 08:01:53,410 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1026 transitions. Word has length 67 [2025-02-08 08:01:53,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:53,410 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1026 transitions. [2025-02-08 08:01:53,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1026 transitions. [2025-02-08 08:01:53,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-08 08:01:53,411 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:53,411 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:53,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-08 08:01:53,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:53,615 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:53,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:53,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1402426710, now seen corresponding path program 1 times [2025-02-08 08:01:53,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:53,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619473836] [2025-02-08 08:01:53,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:53,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:53,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:53,621 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:53,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 08:01:53,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-08 08:01:53,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 08:01:53,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:53,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:53,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 08:01:53,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:53,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:01:53,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:01:53,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 08:01:53,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-08 08:01:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:53,977 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:53,977 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:53,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619473836] [2025-02-08 08:01:53,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619473836] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:53,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:53,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:53,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45544638] [2025-02-08 08:01:53,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:53,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:01:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:53,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:01:53,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:01:53,978 INFO L87 Difference]: Start difference. First operand 969 states and 1026 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:55,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:55,635 INFO L93 Difference]: Finished difference Result 968 states and 1025 transitions. [2025-02-08 08:01:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:01:55,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-08 08:01:55,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:55,637 INFO L225 Difference]: With dead ends: 968 [2025-02-08 08:01:55,637 INFO L226 Difference]: Without dead ends: 968 [2025-02-08 08:01:55,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:01:55,638 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 1 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:55,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2208 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 08:01:55,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2025-02-08 08:01:55,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2025-02-08 08:01:55,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 650 states have (on average 1.5584615384615386) internal successors, (1013), 959 states have internal predecessors, (1013), 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) [2025-02-08 08:01:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1025 transitions. [2025-02-08 08:01:55,648 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1025 transitions. Word has length 67 [2025-02-08 08:01:55,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:55,648 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1025 transitions. [2025-02-08 08:01:55,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:01:55,648 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1025 transitions. [2025-02-08 08:01:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-08 08:01:55,648 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:55,648 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:55,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 08:01:55,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:55,854 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr416REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:55,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:55,855 INFO L85 PathProgramCache]: Analyzing trace with hash -294483822, now seen corresponding path program 1 times [2025-02-08 08:01:55,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:55,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238226789] [2025-02-08 08:01:55,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:55,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:55,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:55,857 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:55,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 08:01:55,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-08 08:01:56,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-08 08:01:56,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:56,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:56,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 08:01:56,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:56,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:01:56,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-08 08:01:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:56,129 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:56,129 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:56,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238226789] [2025-02-08 08:01:56,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238226789] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:56,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:56,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:01:56,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564355347] [2025-02-08 08:01:56,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:56,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:01:56,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:56,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:01:56,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:01:56,131 INFO L87 Difference]: Start difference. First operand 968 states and 1025 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 08:01:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:57,934 INFO L93 Difference]: Finished difference Result 980 states and 1040 transitions. [2025-02-08 08:01:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:01:57,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-08 08:01:57,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:57,940 INFO L225 Difference]: With dead ends: 980 [2025-02-08 08:01:57,940 INFO L226 Difference]: Without dead ends: 980 [2025-02-08 08:01:57,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-08 08:01:57,945 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 12 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:57,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3461 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-08 08:01:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2025-02-08 08:01:57,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 974. [2025-02-08 08:01:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 655 states have (on average 1.5572519083969465) internal successors, (1020), 964 states have internal predecessors, (1020), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-08 08:01:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1035 transitions. [2025-02-08 08:01:57,969 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1035 transitions. Word has length 75 [2025-02-08 08:01:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:57,969 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1035 transitions. [2025-02-08 08:01:57,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 08:01:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1035 transitions. [2025-02-08 08:01:57,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-08 08:01:57,969 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:57,969 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:57,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-08 08:01:58,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:58,170 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:58,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:58,171 INFO L85 PathProgramCache]: Analyzing trace with hash -294483821, now seen corresponding path program 1 times [2025-02-08 08:01:58,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:58,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57287139] [2025-02-08 08:01:58,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:58,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:58,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:58,174 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:58,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 08:01:58,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-08 08:01:58,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-08 08:01:58,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:58,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:58,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:01:58,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:58,376 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:01:58,377 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:58,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57287139] [2025-02-08 08:01:58,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57287139] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:01:58,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:01:58,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:01:58,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688774218] [2025-02-08 08:01:58,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:01:58,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:01:58,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:58,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:01:58,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:58,379 INFO L87 Difference]: Start difference. First operand 974 states and 1035 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 08:01:58,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:58,437 INFO L93 Difference]: Finished difference Result 971 states and 1029 transitions. [2025-02-08 08:01:58,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:01:58,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-08 08:01:58,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:58,443 INFO L225 Difference]: With dead ends: 971 [2025-02-08 08:01:58,443 INFO L226 Difference]: Without dead ends: 971 [2025-02-08 08:01:58,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:01:58,443 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 0 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:58,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2503 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:01:58,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2025-02-08 08:01:58,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2025-02-08 08:01:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 652 states have (on average 1.5582822085889572) internal successors, (1016), 962 states have internal predecessors, (1016), 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) [2025-02-08 08:01:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1029 transitions. [2025-02-08 08:01:58,465 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1029 transitions. Word has length 75 [2025-02-08 08:01:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:58,466 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1029 transitions. [2025-02-08 08:01:58,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 08:01:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1029 transitions. [2025-02-08 08:01:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-08 08:01:58,466 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:58,466 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:58,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-08 08:01:58,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:58,668 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr416REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:58,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:58,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1676942346, now seen corresponding path program 1 times [2025-02-08 08:01:58,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:58,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581346450] [2025-02-08 08:01:58,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:01:58,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:58,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:58,671 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:58,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 08:01:58,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-08 08:01:58,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 08:01:58,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:01:58,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:01:58,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:01:58,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:01:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:58,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:01:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:01:59,008 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:01:59,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581346450] [2025-02-08 08:01:59,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581346450] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:01:59,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:01:59,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-08 08:01:59,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444568546] [2025-02-08 08:01:59,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:01:59,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:01:59,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:01:59,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:01:59,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:01:59,010 INFO L87 Difference]: Start difference. First operand 971 states and 1029 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:01:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:01:59,137 INFO L93 Difference]: Finished difference Result 983 states and 1046 transitions. [2025-02-08 08:01:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:01:59,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2025-02-08 08:01:59,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:01:59,139 INFO L225 Difference]: With dead ends: 983 [2025-02-08 08:01:59,139 INFO L226 Difference]: Without dead ends: 983 [2025-02-08 08:01:59,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-08 08:01:59,139 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 8 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:01:59,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3337 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 08:01:59,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2025-02-08 08:01:59,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2025-02-08 08:01:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 661 states have (on average 1.5597579425113464) internal successors, (1031), 971 states have internal predecessors, (1031), 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) [2025-02-08 08:01:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1044 transitions. [2025-02-08 08:01:59,148 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1044 transitions. Word has length 76 [2025-02-08 08:01:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:01:59,149 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1044 transitions. [2025-02-08 08:01:59,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:01:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1044 transitions. [2025-02-08 08:01:59,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-08 08:01:59,149 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:01:59,149 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:01:59,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 08:01:59,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:59,350 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr416REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:01:59,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:01:59,350 INFO L85 PathProgramCache]: Analyzing trace with hash 200779410, now seen corresponding path program 2 times [2025-02-08 08:01:59,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:01:59,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263037138] [2025-02-08 08:01:59,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:01:59,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:01:59,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:01:59,353 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:01:59,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 08:01:59,502 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-08 08:02:21,643 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 08:02:21,643 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:02:21,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:02:21,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 08:02:21,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:02:21,741 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 08:02:21,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 08:02:21,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:02:21,865 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:02:21,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-08 08:02:21,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-02-08 08:02:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 08:02:21,918 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:02:21,975 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-08 08:02:21,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-02-08 08:02:22,007 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:02:22,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263037138] [2025-02-08 08:02:22,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263037138] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:02:22,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1076953286] [2025-02-08 08:02:22,008 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:02:22,008 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 08:02:22,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 08:02:22,030 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 08:02:22,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2025-02-08 08:02:22,250 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-08 08:02:23,104 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 08:02:23,104 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:02:23,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:02:23,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:02:23,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:02:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:02:23,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:02:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:02:23,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1076953286] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:02:23,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:02:23,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-02-08 08:02:23,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906238321] [2025-02-08 08:02:23,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:02:23,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 08:02:23,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:02:23,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 08:02:23,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=505, Unknown=6, NotChecked=0, Total=600 [2025-02-08 08:02:23,400 INFO L87 Difference]: Start difference. First operand 981 states and 1044 transitions. Second operand has 23 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 08:02:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:02:28,458 INFO L93 Difference]: Finished difference Result 1372 states and 1466 transitions. [2025-02-08 08:02:28,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-08 08:02:28,458 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2025-02-08 08:02:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:02:28,460 INFO L225 Difference]: With dead ends: 1372 [2025-02-08 08:02:28,461 INFO L226 Difference]: Without dead ends: 1368 [2025-02-08 08:02:28,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=410, Invalid=2133, Unknown=7, NotChecked=0, Total=2550 [2025-02-08 08:02:28,463 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 756 mSDsluCounter, 5218 mSDsCounter, 0 mSdLazyCounter, 5139 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 5687 SdHoareTripleChecker+Invalid, 5162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 5139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:02:28,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 5687 Invalid, 5162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 5139 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-02-08 08:02:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2025-02-08 08:02:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 989. [2025-02-08 08:02:28,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 670 states have (on average 1.5552238805970149) internal successors, (1042), 979 states have internal predecessors, (1042), 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) [2025-02-08 08:02:28,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1055 transitions. [2025-02-08 08:02:28,476 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1055 transitions. Word has length 79 [2025-02-08 08:02:28,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:02:28,476 INFO L471 AbstractCegarLoop]: Abstraction has 989 states and 1055 transitions. [2025-02-08 08:02:28,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 08:02:28,477 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1055 transitions. [2025-02-08 08:02:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-02-08 08:02:28,477 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:02:28,477 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:02:28,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2025-02-08 08:02:28,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-02-08 08:02:28,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:02:28,878 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:02:28,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:02:28,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1877920877, now seen corresponding path program 1 times [2025-02-08 08:02:28,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:02:28,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633694491] [2025-02-08 08:02:28,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:02:28,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:02:28,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:02:28,881 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:02:28,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-08 08:02:29,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-02-08 08:02:29,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-02-08 08:02:29,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:02:29,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:02:29,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 08:02:29,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:02:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:02:29,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:02:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:02:29,589 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:02:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633694491] [2025-02-08 08:02:29,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633694491] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:02:29,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:02:29,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-08 08:02:29,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867378042] [2025-02-08 08:02:29,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:02:29,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 08:02:29,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:02:29,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 08:02:29,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-08 08:02:29,591 INFO L87 Difference]: Start difference. First operand 989 states and 1055 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:02:30,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:02:30,799 INFO L93 Difference]: Finished difference Result 1013 states and 1094 transitions. [2025-02-08 08:02:30,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 08:02:30,799 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2025-02-08 08:02:30,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:02:30,801 INFO L225 Difference]: With dead ends: 1013 [2025-02-08 08:02:30,801 INFO L226 Difference]: Without dead ends: 1007 [2025-02-08 08:02:30,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 08:02:30,802 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 26 mSDsluCounter, 9165 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 10001 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:02:30,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 10001 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 08:02:30,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2025-02-08 08:02:30,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1007. [2025-02-08 08:02:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 688 states have (on average 1.5479651162790697) internal successors, (1065), 997 states have internal predecessors, (1065), 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) [2025-02-08 08:02:30,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1078 transitions. [2025-02-08 08:02:30,809 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1078 transitions. Word has length 85 [2025-02-08 08:02:30,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:02:30,810 INFO L471 AbstractCegarLoop]: Abstraction has 1007 states and 1078 transitions. [2025-02-08 08:02:30,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:02:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1078 transitions. [2025-02-08 08:02:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 08:02:30,810 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:02:30,810 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:02:30,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-02-08 08:02:31,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:02:31,011 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-02-08 08:02:31,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:02:31,011 INFO L85 PathProgramCache]: Analyzing trace with hash -46461549, now seen corresponding path program 2 times [2025-02-08 08:02:31,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:02:31,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589437118] [2025-02-08 08:02:31,011 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:02:31,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:02:31,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:02:31,014 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:02:31,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-08 08:02:31,187 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes.