./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_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-?-c00e63d-m [2025-02-06 12:27:40,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:27:40,734 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:27:40,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:27:40,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:27:40,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:27:40,758 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:27:40,758 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:27:40,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:27:40,759 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:27:40,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:27:40,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:27:40,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:27:40,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:27:40,760 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:27:40,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:27:40,761 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:27:40,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:27:40,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:27:40,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:27:40,761 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:27:40,761 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:27:40,761 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:27:40,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:27:40,761 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:27:40,761 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:27:40,762 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:27:40,762 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:27:40,762 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:27:40,762 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:27:40,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:27:40,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:27:40,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:27:40,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:27:40,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:27:40,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:27:40,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:27:40,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:27:40,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:27:40,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:27:40,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:27:40,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:27:40,763 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 [2025-02-06 12:27:40,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:27:40,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:27:40,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:27:40,994 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:27:40,994 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:27:40,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-1.i [2025-02-06 12:27:42,160 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ca0048e61/546f36bdafca4c33b0ac80dfa30a39e3/FLAGb3b220aa7 [2025-02-06 12:27:42,495 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:27:42,497 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-1.i [2025-02-06 12:27:42,519 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ca0048e61/546f36bdafca4c33b0ac80dfa30a39e3/FLAGb3b220aa7 [2025-02-06 12:27:42,748 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ca0048e61/546f36bdafca4c33b0ac80dfa30a39e3 [2025-02-06 12:27:42,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:27:42,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:27:42,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:27:42,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:27:42,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:27:42,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:27:42" (1/1) ... [2025-02-06 12:27:42,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ead840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:42, skipping insertion in model container [2025-02-06 12:27:42,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:27:42" (1/1) ... [2025-02-06 12:27:42,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:27:43,034 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,059 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,061 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,064 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,069 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,094 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,094 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,097 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,097 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,099 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,100 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,101 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,101 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,105 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:43,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:27:43,128 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-06 12:27:43,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47f77943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:43, skipping insertion in model container [2025-02-06 12:27:43,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:27:43,129 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:27:43,132 INFO L158 Benchmark]: Toolchain (without parser) took 378.57ms. Allocated memory is still 142.6MB. Free memory was 108.5MB in the beginning and 89.7MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:27:43,133 INFO L158 Benchmark]: CDTParser took 1.02ms. Allocated memory is still 201.3MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:27:43,133 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.74ms. Allocated memory is still 142.6MB. Free memory was 108.5MB in the beginning and 89.7MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:27:43,134 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02ms. Allocated memory is still 201.3MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.74ms. Allocated memory is still 142.6MB. Free memory was 108.5MB in the beginning and 89.7MB 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_SFH_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-?-c00e63d-m [2025-02-06 12:27:44,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:27:44,922 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:27:44,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:27:44,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:27:44,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:27:44,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:27:44,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:27:44,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:27:44,949 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:27:44,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:27:44,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:27:44,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:27:44,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:27:44,949 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:27:44,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:27:44,950 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:27:44,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:27:44,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:27:44,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:27:44,950 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:27:44,950 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:27:44,950 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:27:44,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:27:44,950 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:27:44,950 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:27:44,951 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:27:44,951 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:27:44,951 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:27:44,951 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:27:44,951 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:27:44,951 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:27:44,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:27:44,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:27:44,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:27:44,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:27:44,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:27:44,952 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:27:44,952 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:27:44,952 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:27:44,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:27:44,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:27:44,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:27:44,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:27:44,952 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 [2025-02-06 12:27:45,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:27:45,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:27:45,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:27:45,228 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:27:45,228 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:27:45,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-1.i [2025-02-06 12:27:46,371 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4a70b1d1e/fc16d21f3f1d4cb08333cf26cf772d00/FLAGfc46536e7 [2025-02-06 12:27:46,599 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:27:46,599 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-1.i [2025-02-06 12:27:46,615 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4a70b1d1e/fc16d21f3f1d4cb08333cf26cf772d00/FLAGfc46536e7 [2025-02-06 12:27:46,931 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4a70b1d1e/fc16d21f3f1d4cb08333cf26cf772d00 [2025-02-06 12:27:46,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:27:46,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:27:46,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:27:46,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:27:46,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:27:46,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:27:46" (1/1) ... [2025-02-06 12:27:46,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d2e37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:46, skipping insertion in model container [2025-02-06 12:27:46,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:27:46" (1/1) ... [2025-02-06 12:27:46,970 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:27:47,199 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,237 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,242 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,246 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,250 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,274 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,274 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,276 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,276 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,278 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,279 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,280 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,280 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,283 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:27:47,297 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:27:47,312 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:27:47,331 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,345 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,346 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,348 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,351 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,374 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,375 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,380 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,380 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,381 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,382 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,384 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,385 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,390 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:27:47,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:27:47,399 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:27:47,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:27:47,516 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:27:47,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47 WrapperNode [2025-02-06 12:27:47,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:27:47,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:27:47,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:27:47,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:27:47,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,580 INFO L138 Inliner]: procedures = 180, calls = 274, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1005 [2025-02-06 12:27:47,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:27:47,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:27:47,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:27:47,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:27:47,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,650 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-02-06 12:27:47,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,703 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:27:47,730 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:27:47,730 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:27:47,730 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:27:47,731 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (1/1) ... [2025-02-06 12:27:47,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:27:47,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:27:47,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:27:47,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:27:47,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:27:47,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:27:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-06 12:27:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:27:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:27:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-06 12:27:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 12:27:47,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 12:27:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:27:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:27:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 12:27:47,781 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:27:47,781 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:27:47,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:27:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:27:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-06 12:27:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:27:47,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:27:47,932 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:27:47,934 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:27:50,793 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-06 12:27:50,881 INFO L? ?]: Removed 1080 outVars from TransFormulas that were not future-live. [2025-02-06 12:27:50,882 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:27:50,898 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:27:50,898 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:27:50,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:27:50 BoogieIcfgContainer [2025-02-06 12:27:50,899 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:27:50,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:27:50,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:27:50,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:27:50,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:27:46" (1/3) ... [2025-02-06 12:27:50,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7135404b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:27:50, skipping insertion in model container [2025-02-06 12:27:50,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:27:47" (2/3) ... [2025-02-06 12:27:50,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7135404b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:27:50, skipping insertion in model container [2025-02-06 12:27:50,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:27:50" (3/3) ... [2025-02-06 12:27:50,906 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test3-1.i [2025-02-06 12:27:50,924 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:27:50,925 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_nondet_test3-1.i that has 5 procedures, 1080 locations, 1 initial locations, 38 loop locations, and 525 error locations. [2025-02-06 12:27:50,962 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:27:50,971 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;@6f6db92f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:27:50,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2025-02-06 12:27:50,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 1070 states, 540 states have (on average 2.188888888888889) internal successors, (1182), 1063 states have internal predecessors, (1182), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 12:27:50,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 12:27:50,981 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:27:50,982 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 12:27:50,982 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)] === [2025-02-06 12:27:50,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:27:50,986 INFO L85 PathProgramCache]: Analyzing trace with hash 37585036, now seen corresponding path program 1 times [2025-02-06 12:27:50,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:27:50,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267034238] [2025-02-06 12:27:50,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:27:50,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:27:50,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:27:50,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:27:50,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 12:27:51,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 12:27:51,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 12:27:51,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:27:51,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:27:51,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:27:51,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:27:51,201 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48| (_ bv0 1))))) is different from true [2025-02-06 12:27:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:27:51,205 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:27:51,206 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:27:51,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267034238] [2025-02-06 12:27:51,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267034238] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:27:51,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:27:51,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:27:51,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356881530] [2025-02-06 12:27:51,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:27:51,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:27:51,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:27:51,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:27:51,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-06 12:27:51,233 INFO L87 Difference]: Start difference. First operand has 1070 states, 540 states have (on average 2.188888888888889) internal successors, (1182), 1063 states have internal predecessors, (1182), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:27:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:27:53,044 INFO L93 Difference]: Finished difference Result 1464 states and 1567 transitions. [2025-02-06 12:27:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:27:53,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-06 12:27:53,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:27:53,056 INFO L225 Difference]: With dead ends: 1464 [2025-02-06 12:27:53,056 INFO L226 Difference]: Without dead ends: 1461 [2025-02-06 12:27:53,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-06 12:27:53,059 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 430 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 2315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1568 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:27:53,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1506 Invalid, 2315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 747 Invalid, 0 Unknown, 1568 Unchecked, 1.7s Time] [2025-02-06 12:27:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2025-02-06 12:27:53,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1058. [2025-02-06 12:27:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 534 states have (on average 2.0692883895131087) internal successors, (1105), 1051 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) [2025-02-06 12:27:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1115 transitions. [2025-02-06 12:27:53,119 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1115 transitions. Word has length 4 [2025-02-06 12:27:53,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:27:53,119 INFO L471 AbstractCegarLoop]: Abstraction has 1058 states and 1115 transitions. [2025-02-06 12:27:53,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:27:53,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1115 transitions. [2025-02-06 12:27:53,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 12:27:53,120 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:27:53,120 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 12:27:53,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 12:27:53,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:27:53,321 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)] === [2025-02-06 12:27:53,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:27:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash 37586236, now seen corresponding path program 1 times [2025-02-06 12:27:53,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:27:53,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518058810] [2025-02-06 12:27:53,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:27:53,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:27:53,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:27:53,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:27:53,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 12:27:53,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 12:27:53,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 12:27:53,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:27:53,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:27:53,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:27:53,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:27:53,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:27:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:27:53,423 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:27:53,424 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:27:53,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518058810] [2025-02-06 12:27:53,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518058810] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:27:53,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:27:53,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:27:53,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416062999] [2025-02-06 12:27:53,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:27:53,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:27:53,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:27:53,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:27:53,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:27:53,425 INFO L87 Difference]: Start difference. First operand 1058 states and 1115 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:27:54,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:27:54,467 INFO L93 Difference]: Finished difference Result 1065 states and 1124 transitions. [2025-02-06 12:27:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:27:54,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-06 12:27:54,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:27:54,470 INFO L225 Difference]: With dead ends: 1065 [2025-02-06 12:27:54,470 INFO L226 Difference]: Without dead ends: 1065 [2025-02-06 12:27:54,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:27:54,471 INFO L435 NwaCegarLoop]: 641 mSDtfsCounter, 975 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:27:54,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 702 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-06 12:27:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2025-02-06 12:27:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1057. [2025-02-06 12:27:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 543 states have (on average 2.03683241252302) internal successors, (1106), 1049 states have internal predecessors, (1106), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 12:27:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1116 transitions. [2025-02-06 12:27:54,494 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1116 transitions. Word has length 4 [2025-02-06 12:27:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:27:54,494 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1116 transitions. [2025-02-06 12:27:54,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:27:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1116 transitions. [2025-02-06 12:27:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 12:27:54,495 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:27:54,495 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 12:27:54,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 12:27:54,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:27:54,695 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)] === [2025-02-06 12:27:54,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:27:54,696 INFO L85 PathProgramCache]: Analyzing trace with hash 37586237, now seen corresponding path program 1 times [2025-02-06 12:27:54,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:27:54,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579181392] [2025-02-06 12:27:54,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:27:54,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:27:54,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:27:54,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:27:54,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 12:27:54,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 12:27:54,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 12:27:54,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:27:54,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:27:54,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:27:54,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:27:54,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:27:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:27:54,817 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:27:54,818 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:27:54,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579181392] [2025-02-06 12:27:54,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579181392] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:27:54,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:27:54,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:27:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913732405] [2025-02-06 12:27:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:27:54,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:27:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:27:54,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:27:54,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:27:54,818 INFO L87 Difference]: Start difference. First operand 1057 states and 1116 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:27:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:27:56,585 INFO L93 Difference]: Finished difference Result 1469 states and 1562 transitions. [2025-02-06 12:27:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:27:56,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-06 12:27:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:27:56,589 INFO L225 Difference]: With dead ends: 1469 [2025-02-06 12:27:56,589 INFO L226 Difference]: Without dead ends: 1469 [2025-02-06 12:27:56,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:27:56,592 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 440 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:27:56,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1501 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 12:27:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2025-02-06 12:27:56,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1275. [2025-02-06 12:27:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 761 states have (on average 2.0197109067017083) internal successors, (1537), 1266 states have internal predecessors, (1537), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:27:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1549 transitions. [2025-02-06 12:27:56,612 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1549 transitions. Word has length 4 [2025-02-06 12:27:56,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:27:56,612 INFO L471 AbstractCegarLoop]: Abstraction has 1275 states and 1549 transitions. [2025-02-06 12:27:56,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:27:56,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1549 transitions. [2025-02-06 12:27:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:27:56,613 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:27:56,613 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:27:56,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 12:27:56,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:27:56,817 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)] === [2025-02-06 12:27:56,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:27:56,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2018891680, now seen corresponding path program 1 times [2025-02-06 12:27:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:27:56,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674620126] [2025-02-06 12:27:56,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:27:56,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:27:56,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:27:56,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:27:56,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 12:27:56,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:27:56,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:27:56,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:27:56,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:27:56,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:27:56,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:27:56,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:27:57,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:27:57,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 12:27:57,033 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:27:57,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 12:27:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:27:57,059 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:27:57,059 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:27:57,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674620126] [2025-02-06 12:27:57,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674620126] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:27:57,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:27:57,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:27:57,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906793968] [2025-02-06 12:27:57,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:27:57,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:27:57,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:27:57,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:27:57,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:27:57,061 INFO L87 Difference]: Start difference. First operand 1275 states and 1549 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:27:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:27:58,776 INFO L93 Difference]: Finished difference Result 1277 states and 1552 transitions. [2025-02-06 12:27:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:27:58,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-06 12:27:58,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:27:58,779 INFO L225 Difference]: With dead ends: 1277 [2025-02-06 12:27:58,779 INFO L226 Difference]: Without dead ends: 1277 [2025-02-06 12:27:58,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:27:58,780 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 1072 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:27:58,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 425 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 12:27:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2025-02-06 12:27:58,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1045. [2025-02-06 12:27:58,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 543 states have (on average 2.0110497237569063) internal successors, (1092), 1037 states have internal predecessors, (1092), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 12:27:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1102 transitions. [2025-02-06 12:27:58,794 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1102 transitions. Word has length 9 [2025-02-06 12:27:58,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:27:58,794 INFO L471 AbstractCegarLoop]: Abstraction has 1045 states and 1102 transitions. [2025-02-06 12:27:58,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:27:58,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1102 transitions. [2025-02-06 12:27:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 12:27:58,794 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:27:58,795 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:27:58,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 12:27:58,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:27:58,995 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)] === [2025-02-06 12:27:58,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:27:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1838866254, now seen corresponding path program 1 times [2025-02-06 12:27:58,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:27:58,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688412282] [2025-02-06 12:27:58,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:27:58,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:27:58,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:27:58,997 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:27:58,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 12:27:59,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 12:27:59,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 12:27:59,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:27:59,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:27:59,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:27:59,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:27:59,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:27:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:27:59,109 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:27:59,109 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:27:59,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688412282] [2025-02-06 12:27:59,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688412282] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:27:59,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:27:59,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:27:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806019834] [2025-02-06 12:27:59,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:27:59,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:27:59,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:27:59,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:27:59,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:27:59,110 INFO L87 Difference]: Start difference. First operand 1045 states and 1102 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:00,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:00,254 INFO L93 Difference]: Finished difference Result 1390 states and 1478 transitions. [2025-02-06 12:28:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:28:00,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-06 12:28:00,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:00,257 INFO L225 Difference]: With dead ends: 1390 [2025-02-06 12:28:00,257 INFO L226 Difference]: Without dead ends: 1390 [2025-02-06 12:28:00,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:28:00,258 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 941 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:00,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1227 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 12:28:00,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2025-02-06 12:28:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 997. [2025-02-06 12:28:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 543 states have (on average 1.9226519337016574) internal successors, (1044), 989 states have internal predecessors, (1044), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 12:28:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1054 transitions. [2025-02-06 12:28:00,270 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1054 transitions. Word has length 10 [2025-02-06 12:28:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:00,270 INFO L471 AbstractCegarLoop]: Abstraction has 997 states and 1054 transitions. [2025-02-06 12:28:00,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1054 transitions. [2025-02-06 12:28:00,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 12:28:00,271 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:00,271 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:00,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 12:28:00,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:00,472 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)] === [2025-02-06 12:28:00,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1838866253, now seen corresponding path program 1 times [2025-02-06 12:28:00,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:00,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078242872] [2025-02-06 12:28:00,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:00,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:00,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:00,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:00,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 12:28:00,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 12:28:00,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 12:28:00,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:00,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:00,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:28:00,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:00,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:28:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:00,602 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:00,602 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:00,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078242872] [2025-02-06 12:28:00,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078242872] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:00,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:00,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:28:00,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099707039] [2025-02-06 12:28:00,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:00,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:28:00,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:00,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:28:00,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:28:00,603 INFO L87 Difference]: Start difference. First operand 997 states and 1054 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:02,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:02,130 INFO L93 Difference]: Finished difference Result 1479 states and 1570 transitions. [2025-02-06 12:28:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:28:02,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-06 12:28:02,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:02,134 INFO L225 Difference]: With dead ends: 1479 [2025-02-06 12:28:02,134 INFO L226 Difference]: Without dead ends: 1479 [2025-02-06 12:28:02,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:28:02,135 INFO L435 NwaCegarLoop]: 1163 mSDtfsCounter, 702 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:02,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1598 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 12:28:02,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2025-02-06 12:28:02,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1026. [2025-02-06 12:28:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 582 states have (on average 1.907216494845361) internal successors, (1110), 1018 states have internal predecessors, (1110), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 12:28:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1120 transitions. [2025-02-06 12:28:02,149 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1120 transitions. Word has length 10 [2025-02-06 12:28:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:02,149 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1120 transitions. [2025-02-06 12:28:02,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1120 transitions. [2025-02-06 12:28:02,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 12:28:02,150 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:02,150 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:02,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 12:28:02,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:02,351 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)] === [2025-02-06 12:28:02,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1181008317, now seen corresponding path program 1 times [2025-02-06 12:28:02,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:02,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554831297] [2025-02-06 12:28:02,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:02,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:02,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:02,353 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:02,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 12:28:02,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 12:28:02,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 12:28:02,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:02,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:02,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:28:02,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:02,537 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_49| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49|)))) is different from true [2025-02-06 12:28:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:02,538 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:02,538 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:02,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554831297] [2025-02-06 12:28:02,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554831297] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:02,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:02,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:28:02,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477834761] [2025-02-06 12:28:02,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:02,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:28:02,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:02,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:28:02,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-06 12:28:02,539 INFO L87 Difference]: Start difference. First operand 1026 states and 1120 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:03,572 INFO L93 Difference]: Finished difference Result 1429 states and 1555 transitions. [2025-02-06 12:28:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:28:03,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-06 12:28:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:03,576 INFO L225 Difference]: With dead ends: 1429 [2025-02-06 12:28:03,576 INFO L226 Difference]: Without dead ends: 1428 [2025-02-06 12:28:03,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-06 12:28:03,577 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 419 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1469 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:03,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1425 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 655 Invalid, 0 Unknown, 1469 Unchecked, 1.0s Time] [2025-02-06 12:28:03,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2025-02-06 12:28:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1163. [2025-02-06 12:28:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 717 states have (on average 1.885634588563459) internal successors, (1352), 1153 states have internal predecessors, (1352), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 12:28:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1366 transitions. [2025-02-06 12:28:03,590 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1366 transitions. Word has length 14 [2025-02-06 12:28:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:03,590 INFO L471 AbstractCegarLoop]: Abstraction has 1163 states and 1366 transitions. [2025-02-06 12:28:03,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1366 transitions. [2025-02-06 12:28:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 12:28:03,591 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:03,591 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:03,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 12:28:03,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:03,795 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)] === [2025-02-06 12:28:03,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:03,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1181008638, now seen corresponding path program 1 times [2025-02-06 12:28:03,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:03,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507716429] [2025-02-06 12:28:03,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:03,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:03,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:03,797 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:03,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 12:28:03,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 12:28:03,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 12:28:03,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:03,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:03,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:28:03,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:03,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:03,948 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:03,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507716429] [2025-02-06 12:28:03,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507716429] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:03,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:03,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:28:03,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126328649] [2025-02-06 12:28:03,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:03,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:28:03,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:03,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:28:03,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:28:03,949 INFO L87 Difference]: Start difference. First operand 1163 states and 1366 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:04,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:04,306 INFO L93 Difference]: Finished difference Result 1542 states and 1752 transitions. [2025-02-06 12:28:04,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:28:04,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-06 12:28:04,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:04,309 INFO L225 Difference]: With dead ends: 1542 [2025-02-06 12:28:04,309 INFO L226 Difference]: Without dead ends: 1540 [2025-02-06 12:28:04,310 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:28:04,310 INFO L435 NwaCegarLoop]: 1105 mSDtfsCounter, 451 mSDsluCounter, 1954 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:04,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 3059 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 12:28:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2025-02-06 12:28:04,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1360. [2025-02-06 12:28:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 914 states have (on average 1.8774617067833699) internal successors, (1716), 1350 states have internal predecessors, (1716), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 12:28:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1730 transitions. [2025-02-06 12:28:04,324 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1730 transitions. Word has length 14 [2025-02-06 12:28:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:04,324 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 1730 transitions. [2025-02-06 12:28:04,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1730 transitions. [2025-02-06 12:28:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 12:28:04,325 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:04,325 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:04,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 12:28:04,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:04,529 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)] === [2025-02-06 12:28:04,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:04,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1484438950, now seen corresponding path program 1 times [2025-02-06 12:28:04,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:04,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874125403] [2025-02-06 12:28:04,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:04,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:04,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:04,531 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:04,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 12:28:04,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:28:04,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:28:04,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:04,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:04,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:28:04,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:04,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:28:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:04,700 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:04,700 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:04,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874125403] [2025-02-06 12:28:04,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874125403] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:04,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:04,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:28:04,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887249435] [2025-02-06 12:28:04,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:04,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:28:04,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:04,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:28:04,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:28:04,701 INFO L87 Difference]: Start difference. First operand 1360 states and 1730 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:06,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:06,640 INFO L93 Difference]: Finished difference Result 1863 states and 2355 transitions. [2025-02-06 12:28:06,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:28:06,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-06 12:28:06,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:06,644 INFO L225 Difference]: With dead ends: 1863 [2025-02-06 12:28:06,644 INFO L226 Difference]: Without dead ends: 1863 [2025-02-06 12:28:06,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:28:06,644 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 431 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:06,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1912 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-06 12:28:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2025-02-06 12:28:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1652. [2025-02-06 12:28:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1204 states have (on average 1.877906976744186) internal successors, (2261), 1640 states have internal predecessors, (2261), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:28:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2279 transitions. [2025-02-06 12:28:06,664 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2279 transitions. Word has length 16 [2025-02-06 12:28:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:06,664 INFO L471 AbstractCegarLoop]: Abstraction has 1652 states and 2279 transitions. [2025-02-06 12:28:06,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2279 transitions. [2025-02-06 12:28:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 12:28:06,664 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:06,665 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:06,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 12:28:06,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:06,869 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)] === [2025-02-06 12:28:06,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:06,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1484438949, now seen corresponding path program 1 times [2025-02-06 12:28:06,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:06,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212818107] [2025-02-06 12:28:06,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:06,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:06,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:06,871 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:06,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 12:28:06,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:28:06,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:28:06,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:06,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:06,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:28:06,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:06,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:28:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:07,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:07,014 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:07,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212818107] [2025-02-06 12:28:07,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212818107] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:07,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:07,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:28:07,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053485929] [2025-02-06 12:28:07,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:07,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:28:07,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:07,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:28:07,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:28:07,015 INFO L87 Difference]: Start difference. First operand 1652 states and 2279 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:08,143 INFO L93 Difference]: Finished difference Result 1662 states and 2245 transitions. [2025-02-06 12:28:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:28:08,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-06 12:28:08,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:08,147 INFO L225 Difference]: With dead ends: 1662 [2025-02-06 12:28:08,147 INFO L226 Difference]: Without dead ends: 1662 [2025-02-06 12:28:08,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:28:08,148 INFO L435 NwaCegarLoop]: 597 mSDtfsCounter, 970 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:08,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1151 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 12:28:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2025-02-06 12:28:08,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1629. [2025-02-06 12:28:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1204 states have (on average 1.819767441860465) internal successors, (2191), 1617 states have internal predecessors, (2191), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:28:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2209 transitions. [2025-02-06 12:28:08,165 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2209 transitions. Word has length 16 [2025-02-06 12:28:08,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:08,165 INFO L471 AbstractCegarLoop]: Abstraction has 1629 states and 2209 transitions. [2025-02-06 12:28:08,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2209 transitions. [2025-02-06 12:28:08,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 12:28:08,166 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:08,166 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:08,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 12:28:08,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:08,366 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)] === [2025-02-06 12:28:08,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:08,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1227077044, now seen corresponding path program 1 times [2025-02-06 12:28:08,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:08,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345687175] [2025-02-06 12:28:08,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:08,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:08,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:08,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:08,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 12:28:08,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 12:28:08,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 12:28:08,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:08,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:08,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:28:08,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:08,492 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:08,492 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:08,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345687175] [2025-02-06 12:28:08,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345687175] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:08,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:08,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:28:08,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050690199] [2025-02-06 12:28:08,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:08,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:28:08,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:08,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:28:08,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:28:08,493 INFO L87 Difference]: Start difference. First operand 1629 states and 2209 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:08,544 INFO L93 Difference]: Finished difference Result 1563 states and 2084 transitions. [2025-02-06 12:28:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:28:08,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-02-06 12:28:08,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:08,550 INFO L225 Difference]: With dead ends: 1563 [2025-02-06 12:28:08,550 INFO L226 Difference]: Without dead ends: 1563 [2025-02-06 12:28:08,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:28:08,550 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 45 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:08,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2773 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:28:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2025-02-06 12:28:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1563. [2025-02-06 12:28:08,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1157 states have (on average 1.7856525496974935) internal successors, (2066), 1551 states have internal predecessors, (2066), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:28:08,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2084 transitions. [2025-02-06 12:28:08,570 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2084 transitions. Word has length 17 [2025-02-06 12:28:08,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:08,570 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2084 transitions. [2025-02-06 12:28:08,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2084 transitions. [2025-02-06 12:28:08,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-06 12:28:08,571 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:08,571 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:08,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 12:28:08,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:08,772 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)] === [2025-02-06 12:28:08,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:08,772 INFO L85 PathProgramCache]: Analyzing trace with hash 421827845, now seen corresponding path program 1 times [2025-02-06 12:28:08,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:08,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822037426] [2025-02-06 12:28:08,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:08,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:08,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:08,774 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:08,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 12:28:08,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 12:28:08,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 12:28:08,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:08,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:08,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:28:08,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:08,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:28:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:08,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:08,916 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:08,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822037426] [2025-02-06 12:28:08,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822037426] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:08,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:08,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:28:08,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728707100] [2025-02-06 12:28:08,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:08,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:28:08,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:08,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:28:08,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:28:08,917 INFO L87 Difference]: Start difference. First operand 1563 states and 2084 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:10,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:10,461 INFO L93 Difference]: Finished difference Result 2003 states and 2629 transitions. [2025-02-06 12:28:10,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:28:10,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-06 12:28:10,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:10,465 INFO L225 Difference]: With dead ends: 2003 [2025-02-06 12:28:10,466 INFO L226 Difference]: Without dead ends: 2003 [2025-02-06 12:28:10,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:28:10,466 INFO L435 NwaCegarLoop]: 821 mSDtfsCounter, 905 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:10,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1642 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 12:28:10,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2025-02-06 12:28:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1540. [2025-02-06 12:28:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1157 states have (on average 1.745894554883319) internal successors, (2020), 1528 states have internal predecessors, (2020), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:28:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2038 transitions. [2025-02-06 12:28:10,480 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2038 transitions. Word has length 20 [2025-02-06 12:28:10,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:10,480 INFO L471 AbstractCegarLoop]: Abstraction has 1540 states and 2038 transitions. [2025-02-06 12:28:10,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:10,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2038 transitions. [2025-02-06 12:28:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-06 12:28:10,481 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:10,481 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:10,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 12:28:10,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:10,681 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)] === [2025-02-06 12:28:10,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash 421827846, now seen corresponding path program 1 times [2025-02-06 12:28:10,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:10,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670623080] [2025-02-06 12:28:10,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:10,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:10,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:10,684 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:10,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 12:28:10,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 12:28:10,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 12:28:10,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:10,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:10,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:28:10,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:10,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:28:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:10,889 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:10,890 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:10,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670623080] [2025-02-06 12:28:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670623080] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:10,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:10,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:28:10,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953467166] [2025-02-06 12:28:10,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:10,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:28:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:10,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:28:10,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:28:10,891 INFO L87 Difference]: Start difference. First operand 1540 states and 2038 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:12,804 INFO L93 Difference]: Finished difference Result 2190 states and 2808 transitions. [2025-02-06 12:28:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:28:12,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-06 12:28:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:12,809 INFO L225 Difference]: With dead ends: 2190 [2025-02-06 12:28:12,809 INFO L226 Difference]: Without dead ends: 2190 [2025-02-06 12:28:12,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:28:12,810 INFO L435 NwaCegarLoop]: 1104 mSDtfsCounter, 739 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:12,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 2226 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-06 12:28:12,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2025-02-06 12:28:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1654. [2025-02-06 12:28:12,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1271 states have (on average 1.6978756884343036) internal successors, (2158), 1642 states have internal predecessors, (2158), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:28:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2176 transitions. [2025-02-06 12:28:12,829 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2176 transitions. Word has length 20 [2025-02-06 12:28:12,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:12,829 INFO L471 AbstractCegarLoop]: Abstraction has 1654 states and 2176 transitions. [2025-02-06 12:28:12,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:12,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2176 transitions. [2025-02-06 12:28:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-06 12:28:12,830 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:12,830 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:12,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 12:28:13,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:13,034 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)] === [2025-02-06 12:28:13,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:13,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1527558370, now seen corresponding path program 1 times [2025-02-06 12:28:13,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:13,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223674332] [2025-02-06 12:28:13,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:13,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:13,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:13,039 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:13,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 12:28:13,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 12:28:13,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 12:28:13,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:13,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:13,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:28:13,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:13,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:28:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:13,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:28:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:13,700 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:13,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223674332] [2025-02-06 12:28:13,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223674332] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:28:13,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:28:13,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:28:13,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474524545] [2025-02-06 12:28:13,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:28:13,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:28:13,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:13,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:28:13,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:28:13,702 INFO L87 Difference]: Start difference. First operand 1654 states and 2176 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:19,737 INFO L93 Difference]: Finished difference Result 2546 states and 3298 transitions. [2025-02-06 12:28:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:28:19,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-02-06 12:28:19,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:19,742 INFO L225 Difference]: With dead ends: 2546 [2025-02-06 12:28:19,742 INFO L226 Difference]: Without dead ends: 2546 [2025-02-06 12:28:19,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:28:19,743 INFO L435 NwaCegarLoop]: 1131 mSDtfsCounter, 2158 mSDsluCounter, 3306 mSDsCounter, 0 mSdLazyCounter, 3271 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 4437 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:19,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2160 Valid, 4437 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3271 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2025-02-06 12:28:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2025-02-06 12:28:19,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1818. [2025-02-06 12:28:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1435 states have (on average 1.6655052264808363) internal successors, (2390), 1806 states have internal predecessors, (2390), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:28:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2408 transitions. [2025-02-06 12:28:19,764 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2408 transitions. Word has length 39 [2025-02-06 12:28:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:19,764 INFO L471 AbstractCegarLoop]: Abstraction has 1818 states and 2408 transitions. [2025-02-06 12:28:19,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2408 transitions. [2025-02-06 12:28:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-06 12:28:19,767 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:19,767 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:19,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-06 12:28:19,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:19,968 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)] === [2025-02-06 12:28:19,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1170429775, now seen corresponding path program 1 times [2025-02-06 12:28:19,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:19,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288507770] [2025-02-06 12:28:19,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:19,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:19,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:19,970 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:19,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 12:28:20,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-06 12:28:20,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-06 12:28:20,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:20,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:20,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:28:20,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:20,129 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:20,129 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:20,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288507770] [2025-02-06 12:28:20,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288507770] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:20,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:20,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:28:20,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425759061] [2025-02-06 12:28:20,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:20,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:28:20,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:20,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:28:20,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:28:20,130 INFO L87 Difference]: Start difference. First operand 1818 states and 2408 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:20,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:20,176 INFO L93 Difference]: Finished difference Result 1601 states and 1853 transitions. [2025-02-06 12:28:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:28:20,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-02-06 12:28:20,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:20,179 INFO L225 Difference]: With dead ends: 1601 [2025-02-06 12:28:20,179 INFO L226 Difference]: Without dead ends: 1601 [2025-02-06 12:28:20,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:28:20,180 INFO L435 NwaCegarLoop]: 993 mSDtfsCounter, 107 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:20,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1852 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:28:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2025-02-06 12:28:20,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1432. [2025-02-06 12:28:20,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1051 states have (on average 1.5708848715509038) internal successors, (1651), 1422 states have internal predecessors, (1651), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 12:28:20,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1665 transitions. [2025-02-06 12:28:20,191 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1665 transitions. Word has length 50 [2025-02-06 12:28:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:20,191 INFO L471 AbstractCegarLoop]: Abstraction has 1432 states and 1665 transitions. [2025-02-06 12:28:20,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1665 transitions. [2025-02-06 12:28:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-06 12:28:20,192 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:20,192 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:20,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 12:28:20,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:20,393 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)] === [2025-02-06 12:28:20,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:20,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1618280385, now seen corresponding path program 1 times [2025-02-06 12:28:20,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:20,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604174288] [2025-02-06 12:28:20,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:20,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:20,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:20,395 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:20,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 12:28:20,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-06 12:28:20,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 12:28:20,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:20,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:20,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:28:20,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:20,563 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:20,563 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:20,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604174288] [2025-02-06 12:28:20,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604174288] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:20,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:20,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:28:20,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691077435] [2025-02-06 12:28:20,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:20,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:28:20,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:20,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:28:20,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:28:20,564 INFO L87 Difference]: Start difference. First operand 1432 states and 1665 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:20,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:20,598 INFO L93 Difference]: Finished difference Result 1414 states and 1635 transitions. [2025-02-06 12:28:20,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:28:20,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-02-06 12:28:20,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:20,605 INFO L225 Difference]: With dead ends: 1414 [2025-02-06 12:28:20,605 INFO L226 Difference]: Without dead ends: 1414 [2025-02-06 12:28:20,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:28:20,605 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 27 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:20,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2696 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:28:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2025-02-06 12:28:20,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1414. [2025-02-06 12:28:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1033 states have (on average 1.5692158760890609) internal successors, (1621), 1404 states have internal predecessors, (1621), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 12:28:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 1635 transitions. [2025-02-06 12:28:20,617 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 1635 transitions. Word has length 53 [2025-02-06 12:28:20,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:20,617 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 1635 transitions. [2025-02-06 12:28:20,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:20,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 1635 transitions. [2025-02-06 12:28:20,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-06 12:28:20,618 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:20,618 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:20,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 12:28:20,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:20,819 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)] === [2025-02-06 12:28:20,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:20,819 INFO L85 PathProgramCache]: Analyzing trace with hash -848638119, now seen corresponding path program 1 times [2025-02-06 12:28:20,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:20,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162864746] [2025-02-06 12:28:20,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:20,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:20,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:20,821 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:20,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 12:28:20,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 12:28:20,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 12:28:20,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:20,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:20,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:28:20,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:21,012 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:21,012 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:21,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162864746] [2025-02-06 12:28:21,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162864746] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:21,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:21,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:28:21,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680761366] [2025-02-06 12:28:21,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:21,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:28:21,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:21,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:28:21,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:28:21,014 INFO L87 Difference]: Start difference. First operand 1414 states and 1635 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:21,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:21,073 INFO L93 Difference]: Finished difference Result 1103 states and 1199 transitions. [2025-02-06 12:28:21,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:28:21,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-02-06 12:28:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:21,075 INFO L225 Difference]: With dead ends: 1103 [2025-02-06 12:28:21,075 INFO L226 Difference]: Without dead ends: 1103 [2025-02-06 12:28:21,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:28:21,075 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 56 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:21,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2522 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:28:21,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2025-02-06 12:28:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1101. [2025-02-06 12:28:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 743 states have (on average 1.592193808882907) internal successors, (1183), 1091 states have internal predecessors, (1183), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 12:28:21,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1197 transitions. [2025-02-06 12:28:21,083 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1197 transitions. Word has length 55 [2025-02-06 12:28:21,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:21,083 INFO L471 AbstractCegarLoop]: Abstraction has 1101 states and 1197 transitions. [2025-02-06 12:28:21,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:21,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1197 transitions. [2025-02-06 12:28:21,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-06 12:28:21,084 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:21,084 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:21,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 12:28:21,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:21,284 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)] === [2025-02-06 12:28:21,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:21,285 INFO L85 PathProgramCache]: Analyzing trace with hash 996977671, now seen corresponding path program 1 times [2025-02-06 12:28:21,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:21,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538302137] [2025-02-06 12:28:21,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:21,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:21,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:21,287 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:21,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 12:28:21,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-06 12:28:21,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-06 12:28:21,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:21,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:21,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:28:21,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:21,443 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:28:21,444 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:28:21,444 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:28:21,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-02-06 12:28:21,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:28:21,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-02-06 12:28:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:21,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:21,543 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:21,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538302137] [2025-02-06 12:28:21,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538302137] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:21,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:21,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:28:21,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464288910] [2025-02-06 12:28:21,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:21,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 12:28:21,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:21,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 12:28:21,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:28:21,543 INFO L87 Difference]: Start difference. First operand 1101 states and 1197 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:21,808 INFO L93 Difference]: Finished difference Result 1780 states and 1912 transitions. [2025-02-06 12:28:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:28:21,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-02-06 12:28:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:21,811 INFO L225 Difference]: With dead ends: 1780 [2025-02-06 12:28:21,811 INFO L226 Difference]: Without dead ends: 1776 [2025-02-06 12:28:21,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:28:21,812 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 1642 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 4083 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:21,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 4083 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 12:28:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2025-02-06 12:28:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1048. [2025-02-06 12:28:21,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 691 states have (on average 1.6353111432706222) internal successors, (1130), 1039 states have internal predecessors, (1130), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:28:21,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1142 transitions. [2025-02-06 12:28:21,820 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1142 transitions. Word has length 61 [2025-02-06 12:28:21,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:21,820 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1142 transitions. [2025-02-06 12:28:21,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:21,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1142 transitions. [2025-02-06 12:28:21,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-06 12:28:21,821 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:21,821 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:21,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 12:28:22,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:22,021 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)] === [2025-02-06 12:28:22,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2117378271, now seen corresponding path program 1 times [2025-02-06 12:28:22,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:22,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574144343] [2025-02-06 12:28:22,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:22,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:22,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:22,024 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:22,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 12:28:22,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 12:28:22,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 12:28:22,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:22,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:22,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:28:22,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:22,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:28:22,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:28:22,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 12:28:22,556 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:28:22,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 12:28:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:22,559 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:22,559 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574144343] [2025-02-06 12:28:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574144343] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:22,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:22,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:28:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774481886] [2025-02-06 12:28:22,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:22,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:28:22,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:22,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:28:22,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:28:22,560 INFO L87 Difference]: Start difference. First operand 1048 states and 1142 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:24,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:24,266 INFO L93 Difference]: Finished difference Result 1385 states and 1503 transitions. [2025-02-06 12:28:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:28:24,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-02-06 12:28:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:24,269 INFO L225 Difference]: With dead ends: 1385 [2025-02-06 12:28:24,269 INFO L226 Difference]: Without dead ends: 1385 [2025-02-06 12:28:24,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:28:24,269 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 1135 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:24,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 751 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 12:28:24,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2025-02-06 12:28:24,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 971. [2025-02-06 12:28:24,284 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), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:28:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1028 transitions. [2025-02-06 12:28:24,286 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1028 transitions. Word has length 63 [2025-02-06 12:28:24,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:24,286 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1028 transitions. [2025-02-06 12:28:24,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:24,286 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1028 transitions. [2025-02-06 12:28:24,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 12:28:24,287 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:24,287 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:24,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 12:28:24,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:24,487 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)] === [2025-02-06 12:28:24,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:24,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1814824560, now seen corresponding path program 1 times [2025-02-06 12:28:24,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:24,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158790570] [2025-02-06 12:28:24,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:24,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:24,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:24,490 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:24,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 12:28:24,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-06 12:28:24,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 12:28:24,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:24,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:24,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:28:24,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:24,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-06 12:28:24,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:28:24,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 12:28:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:24,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:24,711 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:24,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158790570] [2025-02-06 12:28:24,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158790570] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:24,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:24,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:28:24,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101310897] [2025-02-06 12:28:24,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:24,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:28:24,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:24,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:28:24,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:28:24,712 INFO L87 Difference]: Start difference. First operand 971 states and 1028 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:25,933 INFO L93 Difference]: Finished difference Result 970 states and 1027 transitions. [2025-02-06 12:28:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:28:25,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-02-06 12:28:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:25,935 INFO L225 Difference]: With dead ends: 970 [2025-02-06 12:28:25,935 INFO L226 Difference]: Without dead ends: 970 [2025-02-06 12:28:25,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:28:25,935 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 2 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:25,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2186 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-06 12:28:25,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2025-02-06 12:28:25,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2025-02-06 12:28:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 652 states have (on average 1.5567484662576687) 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) [2025-02-06 12:28:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1027 transitions. [2025-02-06 12:28:25,942 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1027 transitions. Word has length 68 [2025-02-06 12:28:25,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:25,942 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1027 transitions. [2025-02-06 12:28:25,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:25,942 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1027 transitions. [2025-02-06 12:28:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 12:28:25,943 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:25,943 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:25,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-06 12:28:26,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:26,143 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)] === [2025-02-06 12:28:26,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:26,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1814824561, now seen corresponding path program 1 times [2025-02-06 12:28:26,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:26,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326802245] [2025-02-06 12:28:26,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:26,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:26,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:26,146 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:26,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 12:28:26,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-06 12:28:26,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 12:28:26,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:26,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:26,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 12:28:26,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:26,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:28:26,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:28:26,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 12:28:26,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-06 12:28:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:26,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:26,390 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:26,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326802245] [2025-02-06 12:28:26,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326802245] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:26,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:26,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:28:26,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732807104] [2025-02-06 12:28:26,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:26,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:28:26,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:26,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:28:26,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:28:26,391 INFO L87 Difference]: Start difference. First operand 970 states and 1027 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:27,868 INFO L93 Difference]: Finished difference Result 969 states and 1026 transitions. [2025-02-06 12:28:27,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:28:27,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-02-06 12:28:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:27,870 INFO L225 Difference]: With dead ends: 969 [2025-02-06 12:28:27,870 INFO L226 Difference]: Without dead ends: 969 [2025-02-06 12:28:27,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:28:27,870 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 1 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:27,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2209 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-06 12:28:27,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2025-02-06 12:28:27,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2025-02-06 12:28:27,875 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) [2025-02-06 12:28:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1026 transitions. [2025-02-06 12:28:27,876 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1026 transitions. Word has length 68 [2025-02-06 12:28:27,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:27,877 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1026 transitions. [2025-02-06 12:28:27,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:28:27,877 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1026 transitions. [2025-02-06 12:28:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-06 12:28:27,877 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:27,877 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:27,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-06 12:28:28,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:28,078 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)] === [2025-02-06 12:28:28,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash -324385651, now seen corresponding path program 1 times [2025-02-06 12:28:28,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:28,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368818692] [2025-02-06 12:28:28,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:28,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:28,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:28,080 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:28,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-06 12:28:28,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-06 12:28:28,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-06 12:28:28,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:28,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:28,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:28:28,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:28,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:28:28,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 12:28:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:28,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:28,334 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:28,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368818692] [2025-02-06 12:28:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368818692] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:28,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:28,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:28:28,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506576803] [2025-02-06 12:28:28,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:28,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:28:28,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:28,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:28:28,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:28:28,335 INFO L87 Difference]: Start difference. First operand 969 states and 1026 transitions. Second operand has 7 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:28:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:30,150 INFO L93 Difference]: Finished difference Result 981 states and 1041 transitions. [2025-02-06 12:28:30,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:28:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2025-02-06 12:28:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:30,155 INFO L225 Difference]: With dead ends: 981 [2025-02-06 12:28:30,155 INFO L226 Difference]: Without dead ends: 981 [2025-02-06 12:28:30,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 12:28:30,156 INFO L435 NwaCegarLoop]: 823 mSDtfsCounter, 12 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3464 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:30,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3464 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-06 12:28:30,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2025-02-06 12:28:30,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 975. [2025-02-06 12:28:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 656 states have (on average 1.5564024390243902) internal successors, (1021), 965 states have internal predecessors, (1021), 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) [2025-02-06 12:28:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1036 transitions. [2025-02-06 12:28:30,174 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1036 transitions. Word has length 76 [2025-02-06 12:28:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:30,175 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1036 transitions. [2025-02-06 12:28:30,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:28:30,175 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1036 transitions. [2025-02-06 12:28:30,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-06 12:28:30,176 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:30,176 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:30,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-06 12:28:30,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:30,376 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)] === [2025-02-06 12:28:30,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:30,377 INFO L85 PathProgramCache]: Analyzing trace with hash -324385650, now seen corresponding path program 1 times [2025-02-06 12:28:30,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:30,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530296853] [2025-02-06 12:28:30,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:30,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:30,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:30,379 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:30,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-06 12:28:30,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-06 12:28:30,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-06 12:28:30,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:30,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:30,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:28:30,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:30,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:28:30,592 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:30,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530296853] [2025-02-06 12:28:30,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530296853] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:28:30,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:28:30,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:28:30,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035026245] [2025-02-06 12:28:30,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:28:30,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:28:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:30,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:28:30,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:28:30,594 INFO L87 Difference]: Start difference. First operand 975 states and 1036 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:28:30,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:30,621 INFO L93 Difference]: Finished difference Result 972 states and 1030 transitions. [2025-02-06 12:28:30,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:28:30,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2025-02-06 12:28:30,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:30,624 INFO L225 Difference]: With dead ends: 972 [2025-02-06 12:28:30,624 INFO L226 Difference]: Without dead ends: 972 [2025-02-06 12:28:30,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:28:30,625 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 0 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:30,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2506 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:28:30,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2025-02-06 12:28:30,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2025-02-06 12:28:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 653 states have (on average 1.557427258805513) internal successors, (1017), 963 states have internal predecessors, (1017), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-06 12:28:30,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1030 transitions. [2025-02-06 12:28:30,637 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1030 transitions. Word has length 76 [2025-02-06 12:28:30,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:30,637 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1030 transitions. [2025-02-06 12:28:30,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:28:30,638 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1030 transitions. [2025-02-06 12:28:30,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-06 12:28:30,638 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:30,639 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:30,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-06 12:28:30,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:30,839 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)] === [2025-02-06 12:28:30,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash 758327127, now seen corresponding path program 1 times [2025-02-06 12:28:30,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:30,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413642763] [2025-02-06 12:28:30,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:28:30,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:30,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:30,841 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:28:30,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-06 12:28:30,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-02-06 12:28:31,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-02-06 12:28:31,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:28:31,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:31,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:28:31,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:31,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:28:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:28:31,076 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:28:31,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413642763] [2025-02-06 12:28:31,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413642763] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:28:31,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:28:31,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 12:28:31,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155269938] [2025-02-06 12:28:31,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:28:31,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:28:31,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:28:31,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:28:31,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:28:31,078 INFO L87 Difference]: Start difference. First operand 972 states and 1030 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:28:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:28:31,165 INFO L93 Difference]: Finished difference Result 984 states and 1047 transitions. [2025-02-06 12:28:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:28:31,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2025-02-06 12:28:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:28:31,168 INFO L225 Difference]: With dead ends: 984 [2025-02-06 12:28:31,168 INFO L226 Difference]: Without dead ends: 984 [2025-02-06 12:28:31,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-06 12:28:31,169 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 8 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:28:31,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2509 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:28:31,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2025-02-06 12:28:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 982. [2025-02-06 12:28:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 662 states have (on average 1.5589123867069485) internal successors, (1032), 972 states have internal predecessors, (1032), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-06 12:28:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1045 transitions. [2025-02-06 12:28:31,177 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1045 transitions. Word has length 77 [2025-02-06 12:28:31,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:28:31,178 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1045 transitions. [2025-02-06 12:28:31,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:28:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1045 transitions. [2025-02-06 12:28:31,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-06 12:28:31,178 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:28:31,178 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:28:31,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-06 12:28:31,378 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 [2025-02-06 12:28:31,379 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)] === [2025-02-06 12:28:31,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:28:31,379 INFO L85 PathProgramCache]: Analyzing trace with hash 959555341, now seen corresponding path program 2 times [2025-02-06 12:28:31,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:28:31,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263547284] [2025-02-06 12:28:31,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:28:31,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:28:31,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:28:31,382 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) [2025-02-06 12:28:31,383 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 [2025-02-06 12:28:31,506 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-06 12:28:59,798 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-06 12:28:59,798 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:28:59,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:28:59,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 12:28:59,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:28:59,871 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:28:59,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-06 12:28:59,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:28:59,998 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:28:59,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-06 12:29:00,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-02-06 12:29:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 12:29:00,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:29:00,096 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-06 12:29:00,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-02-06 12:29:00,130 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263547284] [2025-02-06 12:29:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263547284] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:29:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1527842053] [2025-02-06 12:29:00,130 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:29:00,130 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:29:00,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:29:00,132 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) [2025-02-06 12:29:00,133 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 [2025-02-06 12:29:00,310 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-06 12:29:01,173 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-06 12:29:01,173 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:29:01,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:01,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:29:01,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:01,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:29:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:01,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1527842053] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:29:01,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:29:01,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-02-06 12:29:01,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929356223] [2025-02-06 12:29:01,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:29:01,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 12:29:01,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:01,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 12:29:01,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=554, Unknown=5, NotChecked=0, Total=650 [2025-02-06 12:29:01,478 INFO L87 Difference]: Start difference. First operand 982 states and 1045 transitions. Second operand has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:29:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:29:08,026 INFO L93 Difference]: Finished difference Result 1373 states and 1467 transitions. [2025-02-06 12:29:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-06 12:29:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 80 [2025-02-06 12:29:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:29:08,030 INFO L225 Difference]: With dead ends: 1373 [2025-02-06 12:29:08,030 INFO L226 Difference]: Without dead ends: 1369 [2025-02-06 12:29:08,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=2333, Unknown=7, NotChecked=0, Total=2756 [2025-02-06 12:29:08,031 INFO L435 NwaCegarLoop]: 470 mSDtfsCounter, 813 mSDsluCounter, 6505 mSDsCounter, 0 mSdLazyCounter, 6444 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 6975 SdHoareTripleChecker+Invalid, 6474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 6444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:29:08,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 6975 Invalid, 6474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 6444 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2025-02-06 12:29:08,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2025-02-06 12:29:08,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 990. [2025-02-06 12:29:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 671 states have (on average 1.5543964232488823) internal successors, (1043), 980 states have internal predecessors, (1043), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-06 12:29:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1056 transitions. [2025-02-06 12:29:08,043 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1056 transitions. Word has length 80 [2025-02-06 12:29:08,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:29:08,044 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1056 transitions. [2025-02-06 12:29:08,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:29:08,044 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1056 transitions. [2025-02-06 12:29:08,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-02-06 12:29:08,044 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:08,044 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:29:08,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2025-02-06 12:29:08,272 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 [2025-02-06 12:29:08,445 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 [2025-02-06 12:29:08,445 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)] === [2025-02-06 12:29:08,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:08,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1729290958, now seen corresponding path program 1 times [2025-02-06 12:29:08,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:08,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966894045] [2025-02-06 12:29:08,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:29:08,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:08,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:08,447 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:29:08,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-06 12:29:08,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-02-06 12:29:08,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-02-06 12:29:08,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:29:08,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:08,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 12:29:08,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:08,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:29:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:09,128 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:09,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966894045] [2025-02-06 12:29:09,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966894045] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:29:09,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:29:09,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-06 12:29:09,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884239461] [2025-02-06 12:29:09,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:29:09,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 12:29:09,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:09,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 12:29:09,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-06 12:29:09,129 INFO L87 Difference]: Start difference. First operand 990 states and 1056 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:29:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:29:10,234 INFO L93 Difference]: Finished difference Result 1014 states and 1095 transitions. [2025-02-06 12:29:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 12:29:10,235 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2025-02-06 12:29:10,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:29:10,236 INFO L225 Difference]: With dead ends: 1014 [2025-02-06 12:29:10,236 INFO L226 Difference]: Without dead ends: 1008 [2025-02-06 12:29:10,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 12:29:10,237 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 18 mSDsluCounter, 10005 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10842 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:29:10,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 10842 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 12:29:10,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2025-02-06 12:29:10,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2025-02-06 12:29:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 689 states have (on average 1.5471698113207548) internal successors, (1066), 998 states have internal predecessors, (1066), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-06 12:29:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1079 transitions. [2025-02-06 12:29:10,246 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1079 transitions. Word has length 86 [2025-02-06 12:29:10,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:29:10,246 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1079 transitions. [2025-02-06 12:29:10,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:29:10,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1079 transitions. [2025-02-06 12:29:10,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-06 12:29:10,246 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:10,247 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:29:10,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-02-06 12:29:10,447 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 [2025-02-06 12:29:10,447 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)] === [2025-02-06 12:29:10,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash 497936974, now seen corresponding path program 2 times [2025-02-06 12:29:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:10,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715755815] [2025-02-06 12:29:10,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:29:10,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:10,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:10,450 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) [2025-02-06 12:29:10,451 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 [2025-02-06 12:29:10,609 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 98 statements into 2 equivalence classes.