./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.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/ldv-memsafety/memleaks_test17_2-1.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 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:23:49,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:23:50,022 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:23:50,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:23:50,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:23:50,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:23:50,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:23:50,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:23:50,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:23:50,040 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:23:50,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:23:50,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:23:50,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:23:50,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:23:50,041 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:23:50,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:23:50,041 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:23:50,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:23:50,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:23:50,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:23:50,041 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:23:50,041 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:23:50,041 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:23:50,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:23:50,042 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:23:50,042 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:23:50,042 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:23:50,042 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:23:50,042 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:23:50,042 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:23:50,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:23:50,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:23:50,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:23:50,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:23:50,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:23:50,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:23:50,043 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:23:50,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:23:50,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:23:50,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:23:50,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:23:50,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:23:50,043 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 -> 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 [2025-02-06 10:23:50,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:23:50,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:23:50,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:23:50,263 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:23:50,264 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:23:50,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2025-02-06 10:23:51,392 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a27e42c1/a6432a1c93c74d008545601c363db1bd/FLAG0bfe19a00 [2025-02-06 10:23:51,744 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:23:51,745 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2025-02-06 10:23:51,759 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a27e42c1/a6432a1c93c74d008545601c363db1bd/FLAG0bfe19a00 [2025-02-06 10:23:51,772 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a27e42c1/a6432a1c93c74d008545601c363db1bd [2025-02-06 10:23:51,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:23:51,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:23:51,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:23:51,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:23:51,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:23:51,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:23:51" (1/1) ... [2025-02-06 10:23:51,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b55ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:51, skipping insertion in model container [2025-02-06 10:23:51,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:23:51" (1/1) ... [2025-02-06 10:23:51,808 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:23:52,020 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 10:23:52,065 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 10:23:52,070 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 10:23:52,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:23:52,092 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 10:23:52,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29e8b3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:52, skipping insertion in model container [2025-02-06 10:23:52,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:23:52,093 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 10:23:52,094 INFO L158 Benchmark]: Toolchain (without parser) took 319.21ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 108.9MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:23:52,095 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:23:52,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.94ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 108.9MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:23:52,096 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.94ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 108.9MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: 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/ldv-memsafety/memleaks_test17_2-1.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 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:23:53,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:23:53,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 10:23:53,957 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:23:53,957 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:23:53,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:23:53,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:23:53,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:23:53,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:23:53,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:23:53,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:23:53,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:23:53,985 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:23:53,986 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:23:53,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:23:53,986 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:23:53,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:23:53,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:23:53,988 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 -> 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 [2025-02-06 10:23:54,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:23:54,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:23:54,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:23:54,224 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:23:54,225 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:23:54,226 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2025-02-06 10:23:55,584 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d3e0aaf4e/28fbf786024e4153b76f895d6f8a7972/FLAGfb871212c [2025-02-06 10:23:55,781 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:23:55,786 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2025-02-06 10:23:55,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d3e0aaf4e/28fbf786024e4153b76f895d6f8a7972/FLAGfb871212c [2025-02-06 10:23:55,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d3e0aaf4e/28fbf786024e4153b76f895d6f8a7972 [2025-02-06 10:23:55,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:23:55,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:23:55,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:23:55,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:23:55,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:23:55,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:23:55" (1/1) ... [2025-02-06 10:23:55,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be0c035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:55, skipping insertion in model container [2025-02-06 10:23:55,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:23:55" (1/1) ... [2025-02-06 10:23:55,861 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:23:56,074 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 10:23:56,115 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 10:23:56,119 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 10:23:56,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:23:56,134 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 10:23:56,138 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:23:56,163 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 10:23:56,174 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 10:23:56,176 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 10:23:56,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:23:56,181 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:23:56,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:23:56,256 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:23:56,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56 WrapperNode [2025-02-06 10:23:56,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:23:56,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:23:56,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:23:56,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:23:56,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,299 INFO L138 Inliner]: procedures = 167, calls = 78, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 73 [2025-02-06 10:23:56,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:23:56,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:23:56,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:23:56,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:23:56,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,323 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [4, 2]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 2 writes are split as follows [2, 0]. [2025-02-06 10:23:56,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,332 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:23:56,339 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:23:56,339 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:23:56,339 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:23:56,340 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (1/1) ... [2025-02-06 10:23:56,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:23:56,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:23:56,364 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 10:23:56,367 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 10:23:56,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-02-06 10:23:56,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-02-06 10:23:56,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 10:23:56,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 10:23:56,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 10:23:56,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 10:23:56,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 10:23:56,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 10:23:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:23:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 10:23:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 10:23:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:23:56,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:23:56,489 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:23:56,491 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:23:56,513 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L527: havoc #t~malloc12.base, #t~malloc12.offset; [2025-02-06 10:23:56,687 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2025-02-06 10:23:56,687 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:23:56,694 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:23:56,696 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:23:56,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:23:56 BoogieIcfgContainer [2025-02-06 10:23:56,697 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:23:56,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:23:56,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:23:56,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:23:56,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:23:55" (1/3) ... [2025-02-06 10:23:56,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b13eb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:23:56, skipping insertion in model container [2025-02-06 10:23:56,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:23:56" (2/3) ... [2025-02-06 10:23:56,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b13eb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:23:56, skipping insertion in model container [2025-02-06 10:23:56,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:23:56" (3/3) ... [2025-02-06 10:23:56,705 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-1.i [2025-02-06 10:23:56,714 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:23:56,715 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test17_2-1.i that has 2 procedures, 56 locations, 1 initial locations, 4 loop locations, and 18 error locations. [2025-02-06 10:23:56,767 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:23:56,776 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;@5bea8e85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:23:56,777 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-06 10:23:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 52 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:23:56,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 10:23:56,783 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:23:56,783 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:23:56,784 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:23:56,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:23:56,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1441127009, now seen corresponding path program 1 times [2025-02-06 10:23:56,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:23:56,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102549744] [2025-02-06 10:23:56,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:23:56,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:23:56,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:23:56,796 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 10:23:56,798 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 10:23:56,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 10:23:56,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 10:23:56,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:23:56,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:23:56,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:23:56,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:23:56,898 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 10:23:56,898 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:23:56,903 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:23:56,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102549744] [2025-02-06 10:23:56,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102549744] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:23:56,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:23:56,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:23:56,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488520627] [2025-02-06 10:23:56,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:23:56,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:23:56,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:23:56,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:23:56,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:23:56,928 INFO L87 Difference]: Start difference. First operand has 56 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 52 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 10:23:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:23:56,988 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2025-02-06 10:23:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:23:56,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2025-02-06 10:23:56,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:23:56,994 INFO L225 Difference]: With dead ends: 98 [2025-02-06 10:23:56,995 INFO L226 Difference]: Without dead ends: 96 [2025-02-06 10:23:56,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:23:56,997 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 42 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:23:56,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 201 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:23:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-02-06 10:23:57,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 58. [2025-02-06 10:23:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 53 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:23:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2025-02-06 10:23:57,020 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 11 [2025-02-06 10:23:57,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:23:57,020 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2025-02-06 10:23:57,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 10:23:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2025-02-06 10:23:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 10:23:57,021 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:23:57,021 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:23:57,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 10:23:57,225 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 10:23:57,225 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:23:57,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:23:57,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1441130498, now seen corresponding path program 1 times [2025-02-06 10:23:57,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:23:57,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365342943] [2025-02-06 10:23:57,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:23:57,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:23:57,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:23:57,228 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 10:23:57,229 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 10:23:57,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 10:23:57,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 10:23:57,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:23:57,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:23:57,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 10:23:57,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:23:57,289 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 10:23:57,314 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 10:23:57,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:23:57,314 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:23:57,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365342943] [2025-02-06 10:23:57,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365342943] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:23:57,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:23:57,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:23:57,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657354742] [2025-02-06 10:23:57,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:23:57,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:23:57,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:23:57,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:23:57,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:23:57,316 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:23:57,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:23:57,418 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2025-02-06 10:23:57,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:23:57,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2025-02-06 10:23:57,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:23:57,419 INFO L225 Difference]: With dead ends: 89 [2025-02-06 10:23:57,419 INFO L226 Difference]: Without dead ends: 89 [2025-02-06 10:23:57,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:23:57,420 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 31 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:23:57,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 139 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:23:57,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-02-06 10:23:57,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2025-02-06 10:23:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.6595744680851063) internal successors, (78), 64 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:23:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2025-02-06 10:23:57,424 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 11 [2025-02-06 10:23:57,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:23:57,424 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2025-02-06 10:23:57,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:23:57,425 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2025-02-06 10:23:57,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 10:23:57,425 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:23:57,425 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:23:57,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 10:23:57,625 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 10:23:57,626 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:23:57,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:23:57,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1441130499, now seen corresponding path program 1 times [2025-02-06 10:23:57,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:23:57,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632899602] [2025-02-06 10:23:57,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:23:57,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:23:57,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:23:57,629 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 10:23:57,630 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 10:23:57,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 10:23:57,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 10:23:57,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:23:57,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:23:57,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 10:23:57,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:23:57,689 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 10:23:57,795 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 10:23:57,796 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:23:57,796 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:23:57,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632899602] [2025-02-06 10:23:57,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632899602] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:23:57,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:23:57,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 10:23:57,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987223538] [2025-02-06 10:23:57,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:23:57,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:23:57,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:23:57,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:23:57,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:23:57,797 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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 10:23:58,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:23:58,008 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2025-02-06 10:23:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:23:58,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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 11 [2025-02-06 10:23:58,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:23:58,010 INFO L225 Difference]: With dead ends: 107 [2025-02-06 10:23:58,010 INFO L226 Difference]: Without dead ends: 107 [2025-02-06 10:23:58,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:23:58,011 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 70 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:23:58,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 397 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:23:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-02-06 10:23:58,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 94. [2025-02-06 10:23:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.6666666666666667) internal successors, (120), 89 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:23:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2025-02-06 10:23:58,015 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 126 transitions. Word has length 11 [2025-02-06 10:23:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:23:58,015 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 126 transitions. [2025-02-06 10:23:58,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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 10:23:58,016 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 126 transitions. [2025-02-06 10:23:58,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 10:23:58,016 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:23:58,016 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:23:58,022 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 10:23:58,216 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 10:23:58,217 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:23:58,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:23:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1966336606, now seen corresponding path program 1 times [2025-02-06 10:23:58,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:23:58,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400463867] [2025-02-06 10:23:58,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:23:58,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:23:58,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:23:58,220 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 10:23:58,221 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 10:23:58,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 10:23:58,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 10:23:58,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:23:58,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:23:58,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:23:58,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:23:58,273 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 10:23:58,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:23:58,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:23:58,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400463867] [2025-02-06 10:23:58,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400463867] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:23:58,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:23:58,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:23:58,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29487716] [2025-02-06 10:23:58,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:23:58,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:23:58,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:23:58,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:23:58,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:23:58,274 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 10:23:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:23:58,338 INFO L93 Difference]: Finished difference Result 136 states and 173 transitions. [2025-02-06 10:23:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:23:58,338 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), 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 11 [2025-02-06 10:23:58,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:23:58,339 INFO L225 Difference]: With dead ends: 136 [2025-02-06 10:23:58,339 INFO L226 Difference]: Without dead ends: 134 [2025-02-06 10:23:58,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 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 10:23:58,340 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 44 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:23:58,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 150 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:23:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2025-02-06 10:23:58,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2025-02-06 10:23:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.6527777777777777) internal successors, (119), 89 states have internal predecessors, (119), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:23:58,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2025-02-06 10:23:58,345 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 125 transitions. Word has length 11 [2025-02-06 10:23:58,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:23:58,345 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 125 transitions. [2025-02-06 10:23:58,345 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), 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 10:23:58,345 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 125 transitions. [2025-02-06 10:23:58,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 10:23:58,345 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:23:58,345 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:23:58,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 10:23:58,546 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 10:23:58,546 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:23:58,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:23:58,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1966333117, now seen corresponding path program 1 times [2025-02-06 10:23:58,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:23:58,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760328520] [2025-02-06 10:23:58,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:23:58,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:23:58,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:23:58,549 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 10:23:58,552 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 10:23:58,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 10:23:58,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 10:23:58,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:23:58,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:23:58,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:23:58,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:23:58,618 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 10:23:58,618 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:23:58,619 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:23:58,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760328520] [2025-02-06 10:23:58,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760328520] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:23:58,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:23:58,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:23:58,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694876219] [2025-02-06 10:23:58,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:23:58,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:23:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:23:58,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:23:58,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:23:58,620 INFO L87 Difference]: Start difference. First operand 94 states and 125 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 10:23:58,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:23:58,642 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2025-02-06 10:23:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:23:58,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2025-02-06 10:23:58,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:23:58,643 INFO L225 Difference]: With dead ends: 81 [2025-02-06 10:23:58,643 INFO L226 Difference]: Without dead ends: 79 [2025-02-06 10:23:58,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:23:58,644 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:23:58,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:23:58,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-06 10:23:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2025-02-06 10:23:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.6551724137931034) internal successors, (96), 75 states have internal predecessors, (96), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:23:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2025-02-06 10:23:58,647 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 11 [2025-02-06 10:23:58,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:23:58,647 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2025-02-06 10:23:58,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 10:23:58,647 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2025-02-06 10:23:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:23:58,647 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:23:58,647 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:23:58,655 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 10:23:58,848 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 10:23:58,848 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:23:58,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:23:58,848 INFO L85 PathProgramCache]: Analyzing trace with hash 225597074, now seen corresponding path program 1 times [2025-02-06 10:23:58,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:23:58,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882840896] [2025-02-06 10:23:58,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:23:58,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:23:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:23:58,852 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 10:23:58,853 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 10:23:58,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:23:58,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:23:58,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:23:58,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:23:58,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 10:23:58,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:23:58,929 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 10:23:59,031 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 10:23:59,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:23:59,427 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 10:23:59,428 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:23:59,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882840896] [2025-02-06 10:23:59,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882840896] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:23:59,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:23:59,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2025-02-06 10:23:59,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568723815] [2025-02-06 10:23:59,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:23:59,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 10:23:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:23:59,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 10:23:59,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:23:59,430 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:24:00,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:00,217 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2025-02-06 10:24:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 10:24:00,217 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2025-02-06 10:24:00,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:00,218 INFO L225 Difference]: With dead ends: 101 [2025-02-06 10:24:00,218 INFO L226 Difference]: Without dead ends: 101 [2025-02-06 10:24:00,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2025-02-06 10:24:00,219 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 157 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:00,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 433 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 10:24:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-02-06 10:24:00,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2025-02-06 10:24:00,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.5970149253731343) internal successors, (107), 84 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:24:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 112 transitions. [2025-02-06 10:24:00,223 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 112 transitions. Word has length 14 [2025-02-06 10:24:00,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:00,223 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 112 transitions. [2025-02-06 10:24:00,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:24:00,223 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 112 transitions. [2025-02-06 10:24:00,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-06 10:24:00,224 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:00,224 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:00,230 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 10:24:00,424 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 10:24:00,425 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:00,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:00,425 INFO L85 PathProgramCache]: Analyzing trace with hash 620571458, now seen corresponding path program 1 times [2025-02-06 10:24:00,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:00,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228244527] [2025-02-06 10:24:00,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:24:00,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:00,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:00,428 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 10:24:00,429 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 10:24:00,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 10:24:00,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 10:24:00,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:24:00,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:00,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:24:00,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:00,487 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 10:24:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 10:24:00,522 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:24:00,523 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:00,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228244527] [2025-02-06 10:24:00,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228244527] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:24:00,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:24:00,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:24:00,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467612496] [2025-02-06 10:24:00,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:24:00,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:24:00,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:00,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:24:00,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:24:00,524 INFO L87 Difference]: Start difference. First operand 88 states and 112 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 10:24:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:00,650 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2025-02-06 10:24:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:24:00,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 20 [2025-02-06 10:24:00,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:00,651 INFO L225 Difference]: With dead ends: 110 [2025-02-06 10:24:00,651 INFO L226 Difference]: Without dead ends: 110 [2025-02-06 10:24:00,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:24:00,651 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 43 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:00,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 157 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:24:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-02-06 10:24:00,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 92. [2025-02-06 10:24:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 71 states have (on average 1.6056338028169015) internal successors, (114), 88 states have internal predecessors, (114), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:24:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2025-02-06 10:24:00,656 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 20 [2025-02-06 10:24:00,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:00,656 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2025-02-06 10:24:00,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 10:24:00,656 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2025-02-06 10:24:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-06 10:24:00,656 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:00,656 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:00,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 10:24:00,861 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 10:24:00,861 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:00,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:00,862 INFO L85 PathProgramCache]: Analyzing trace with hash 620571459, now seen corresponding path program 1 times [2025-02-06 10:24:00,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:00,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215192532] [2025-02-06 10:24:00,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:24:00,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:00,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:00,865 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 10:24:00,865 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 10:24:00,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 10:24:00,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 10:24:00,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:24:00,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:00,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 10:24:00,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 10:24:00,936 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:24:00,936 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:00,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215192532] [2025-02-06 10:24:00,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215192532] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:24:00,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:24:00,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:24:00,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310446154] [2025-02-06 10:24:00,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:24:00,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:24:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:00,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:24:00,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:24:00,937 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 10:24:00,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:00,969 INFO L93 Difference]: Finished difference Result 93 states and 116 transitions. [2025-02-06 10:24:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:24:00,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 20 [2025-02-06 10:24:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:00,970 INFO L225 Difference]: With dead ends: 93 [2025-02-06 10:24:00,971 INFO L226 Difference]: Without dead ends: 93 [2025-02-06 10:24:00,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 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 10:24:00,971 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:00,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 148 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:24:00,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-02-06 10:24:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2025-02-06 10:24:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.5294117647058822) internal successors, (104), 85 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 10:24:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2025-02-06 10:24:00,982 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 20 [2025-02-06 10:24:00,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:00,982 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2025-02-06 10:24:00,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 10:24:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2025-02-06 10:24:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-06 10:24:00,983 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:00,983 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:00,994 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 10:24:01,185 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 10:24:01,185 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:01,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:01,186 INFO L85 PathProgramCache]: Analyzing trace with hash -631589760, now seen corresponding path program 1 times [2025-02-06 10:24:01,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:01,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754120143] [2025-02-06 10:24:01,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:24:01,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:01,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:01,188 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 10:24:01,189 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 10:24:01,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 10:24:01,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 10:24:01,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:24:01,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:01,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:24:01,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:01,248 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 10:24:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 10:24:01,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:24:01,292 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:01,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754120143] [2025-02-06 10:24:01,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754120143] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:24:01,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:24:01,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:24:01,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857034384] [2025-02-06 10:24:01,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:24:01,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:24:01,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:01,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:24:01,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:24:01,306 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 10:24:01,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:01,413 INFO L93 Difference]: Finished difference Result 98 states and 120 transitions. [2025-02-06 10:24:01,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:24:01,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 22 [2025-02-06 10:24:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:01,414 INFO L225 Difference]: With dead ends: 98 [2025-02-06 10:24:01,414 INFO L226 Difference]: Without dead ends: 98 [2025-02-06 10:24:01,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:24:01,415 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 26 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:01,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 161 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:24:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-02-06 10:24:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2025-02-06 10:24:01,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 69 states have (on average 1.536231884057971) internal successors, (106), 86 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 10:24:01,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 114 transitions. [2025-02-06 10:24:01,422 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 114 transitions. Word has length 22 [2025-02-06 10:24:01,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:01,422 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 114 transitions. [2025-02-06 10:24:01,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 10:24:01,422 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 114 transitions. [2025-02-06 10:24:01,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-06 10:24:01,424 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:01,424 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:01,432 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 10:24:01,628 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 10:24:01,628 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:01,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash -631589759, now seen corresponding path program 1 times [2025-02-06 10:24:01,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:01,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739683296] [2025-02-06 10:24:01,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:24:01,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:01,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:01,631 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 10:24:01,631 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 10:24:01,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 10:24:01,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 10:24:01,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:24:01,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:01,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 10:24:01,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 10:24:01,705 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:24:01,705 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739683296] [2025-02-06 10:24:01,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739683296] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:24:01,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:24:01,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:24:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223407659] [2025-02-06 10:24:01,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:24:01,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:24:01,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:01,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:24:01,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:24:01,706 INFO L87 Difference]: Start difference. First operand 91 states and 114 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 10:24:01,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:01,737 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2025-02-06 10:24:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:24:01,738 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), 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 22 [2025-02-06 10:24:01,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:01,738 INFO L225 Difference]: With dead ends: 78 [2025-02-06 10:24:01,738 INFO L226 Difference]: Without dead ends: 78 [2025-02-06 10:24:01,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 10:24:01,739 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 38 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:01,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 127 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:24:01,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-06 10:24:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2025-02-06 10:24:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.509433962264151) internal successors, (80), 70 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 10:24:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2025-02-06 10:24:01,742 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 22 [2025-02-06 10:24:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:01,742 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2025-02-06 10:24:01,742 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), 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 10:24:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2025-02-06 10:24:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-06 10:24:01,743 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:01,743 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:01,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 10:24:01,943 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 10:24:01,944 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:01,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:01,944 INFO L85 PathProgramCache]: Analyzing trace with hash 786084675, now seen corresponding path program 2 times [2025-02-06 10:24:01,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:01,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125519481] [2025-02-06 10:24:01,944 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:24:01,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:01,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:01,946 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 10:24:01,948 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 10:24:01,999 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 10:24:02,017 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 10:24:02,017 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:24:02,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:02,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:24:02,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:02,041 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 10:24:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:24:02,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:24:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:24:03,468 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:03,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125519481] [2025-02-06 10:24:03,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125519481] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:24:03,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:24:03,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2025-02-06 10:24:03,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530921592] [2025-02-06 10:24:03,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:24:03,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 10:24:03,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:03,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 10:24:03,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2025-02-06 10:24:03,469 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 23 states, 20 states have (on average 2.05) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:24:04,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:04,935 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2025-02-06 10:24:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 10:24:04,936 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-02-06 10:24:04,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:04,937 INFO L225 Difference]: With dead ends: 93 [2025-02-06 10:24:04,937 INFO L226 Difference]: Without dead ends: 93 [2025-02-06 10:24:04,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2025-02-06 10:24:04,937 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 127 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:04,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 452 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-06 10:24:04,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-02-06 10:24:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2025-02-06 10:24:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 71 states have (on average 1.4225352112676057) internal successors, (101), 88 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 10:24:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2025-02-06 10:24:04,945 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 23 [2025-02-06 10:24:04,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:04,946 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2025-02-06 10:24:04,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:24:04,946 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2025-02-06 10:24:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 10:24:04,946 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:04,946 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:04,959 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 10:24:05,147 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 10:24:05,147 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:05,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:05,148 INFO L85 PathProgramCache]: Analyzing trace with hash 713017307, now seen corresponding path program 1 times [2025-02-06 10:24:05,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:05,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335603059] [2025-02-06 10:24:05,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:24:05,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:05,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:05,150 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 10:24:05,152 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 10:24:05,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:24:05,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:24:05,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:24:05,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:05,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 10:24:05,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:05,235 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 10:24:05,353 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-02-06 10:24:05,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 10:24:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:24:05,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:24:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:24:09,577 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:09,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335603059] [2025-02-06 10:24:09,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335603059] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:24:09,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:24:09,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2025-02-06 10:24:09,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973933544] [2025-02-06 10:24:09,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:24:09,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:24:09,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:09,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:24:09,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:24:09,579 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:24:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:09,847 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2025-02-06 10:24:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:24:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2025-02-06 10:24:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:09,849 INFO L225 Difference]: With dead ends: 117 [2025-02-06 10:24:09,849 INFO L226 Difference]: Without dead ends: 117 [2025-02-06 10:24:09,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:24:09,849 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:09,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 221 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:24:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-02-06 10:24:09,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 97. [2025-02-06 10:24:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 92 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 10:24:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2025-02-06 10:24:09,852 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 34 [2025-02-06 10:24:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:09,853 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2025-02-06 10:24:09,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:24:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2025-02-06 10:24:09,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 10:24:09,853 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:09,853 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:09,861 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 10:24:10,053 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 10:24:10,054 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:10,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:10,054 INFO L85 PathProgramCache]: Analyzing trace with hash 713017308, now seen corresponding path program 1 times [2025-02-06 10:24:10,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:10,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222596627] [2025-02-06 10:24:10,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:24:10,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:10,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:10,057 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 10:24:10,058 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 10:24:10,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:24:10,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:24:10,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:24:10,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:10,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 10:24:10,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:10,136 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 10:24:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:24:10,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:24:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 10:24:11,287 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:11,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222596627] [2025-02-06 10:24:11,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222596627] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:24:11,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:24:11,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2025-02-06 10:24:11,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624369507] [2025-02-06 10:24:11,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:24:11,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:24:11,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:11,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:24:11,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:24:11,289 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand has 25 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 10:24:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:12,252 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2025-02-06 10:24:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 10:24:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2025-02-06 10:24:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:12,253 INFO L225 Difference]: With dead ends: 102 [2025-02-06 10:24:12,253 INFO L226 Difference]: Without dead ends: 102 [2025-02-06 10:24:12,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=299, Invalid=757, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 10:24:12,254 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 96 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:12,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 507 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 10:24:12,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-02-06 10:24:12,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2025-02-06 10:24:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 97 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 10:24:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2025-02-06 10:24:12,257 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 34 [2025-02-06 10:24:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:12,257 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2025-02-06 10:24:12,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 10:24:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2025-02-06 10:24:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-06 10:24:12,257 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:12,257 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:12,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 10:24:12,458 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 10:24:12,458 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:12,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:12,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1933049891, now seen corresponding path program 3 times [2025-02-06 10:24:12,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:12,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010223201] [2025-02-06 10:24:12,459 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:24:12,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:12,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:12,462 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 10:24:12,463 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 10:24:12,532 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 11 equivalence classes. [2025-02-06 10:24:15,551 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 41 of 41 statements. [2025-02-06 10:24:15,551 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 10:24:15,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:15,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 10:24:15,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:15,580 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 10:24:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:24:16,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:24:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:24:21,640 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:21,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010223201] [2025-02-06 10:24:21,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010223201] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:24:21,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:24:21,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 40 [2025-02-06 10:24:21,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360821670] [2025-02-06 10:24:21,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:24:21,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-06 10:24:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:21,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-06 10:24:21,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1295, Unknown=0, NotChecked=0, Total=1560 [2025-02-06 10:24:21,642 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 40 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:24:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:23,960 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2025-02-06 10:24:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 10:24:23,960 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2025-02-06 10:24:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:23,963 INFO L225 Difference]: With dead ends: 97 [2025-02-06 10:24:23,963 INFO L226 Difference]: Without dead ends: 97 [2025-02-06 10:24:23,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=299, Invalid=1507, Unknown=0, NotChecked=0, Total=1806 [2025-02-06 10:24:23,965 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 96 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:23,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 776 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 10:24:23,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-02-06 10:24:23,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2025-02-06 10:24:23,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 90 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 10:24:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2025-02-06 10:24:23,968 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 41 [2025-02-06 10:24:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:23,968 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2025-02-06 10:24:23,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:24:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2025-02-06 10:24:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-06 10:24:23,971 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:23,971 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:23,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 10:24:24,171 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 10:24:24,171 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:24,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:24,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1841847379, now seen corresponding path program 2 times [2025-02-06 10:24:24,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:24,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860949320] [2025-02-06 10:24:24,172 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:24:24,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:24,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:24,174 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 10:24:24,175 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 10:24:24,228 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-02-06 10:24:24,262 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 10:24:24,262 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:24:24,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:24,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:24:24,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:24,278 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 10:24:24,282 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 10:24:24,551 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-02-06 10:24:24,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:24:24,564 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 10:24:24,574 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:24:24,575 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 10:24:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2025-02-06 10:24:24,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:24:32,798 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:32,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860949320] [2025-02-06 10:24:32,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860949320] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:24:32,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2045162653] [2025-02-06 10:24:32,799 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:24:32,799 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 10:24:32,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 10:24:32,811 INFO L229 MonitoredProcess]: Starting monitored process 17 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 10:24:32,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2025-02-06 10:24:32,902 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-02-06 10:24:33,017 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 10:24:33,017 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:24:33,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:33,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:24:33,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:33,030 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 10:24:33,036 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 10:24:33,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:24:33,262 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 10:24:33,270 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:24:33,270 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 10:24:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2025-02-06 10:24:33,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:24:37,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2045162653] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:24:37,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:24:37,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2025-02-06 10:24:37,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733446089] [2025-02-06 10:24:37,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:24:37,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:24:37,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:37,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:24:37,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=106, Unknown=3, NotChecked=20, Total=156 [2025-02-06 10:24:37,423 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:24:37,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:37,966 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2025-02-06 10:24:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:24:37,967 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2025-02-06 10:24:37,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:37,968 INFO L225 Difference]: With dead ends: 133 [2025-02-06 10:24:37,969 INFO L226 Difference]: Without dead ends: 133 [2025-02-06 10:24:37,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=66, Invalid=277, Unknown=3, NotChecked=34, Total=380 [2025-02-06 10:24:37,969 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 79 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:37,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 396 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 332 Invalid, 0 Unknown, 109 Unchecked, 0.4s Time] [2025-02-06 10:24:37,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-02-06 10:24:37,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 113. [2025-02-06 10:24:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 106 states have internal predecessors, (123), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2025-02-06 10:24:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2025-02-06 10:24:37,971 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 49 [2025-02-06 10:24:37,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:37,972 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2025-02-06 10:24:37,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:24:37,972 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2025-02-06 10:24:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-06 10:24:37,973 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:37,973 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:37,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2025-02-06 10:24:38,181 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 10:24:38,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:38,375 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:38,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:38,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1621889658, now seen corresponding path program 1 times [2025-02-06 10:24:38,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:38,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882990402] [2025-02-06 10:24:38,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:24:38,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:38,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:38,379 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 10:24:38,379 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 10:24:38,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-06 10:24:38,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 10:24:38,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:24:38,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:38,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:24:38,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2025-02-06 10:24:38,495 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:24:38,495 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:38,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882990402] [2025-02-06 10:24:38,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882990402] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:24:38,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:24:38,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:24:38,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259432854] [2025-02-06 10:24:38,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:24:38,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:24:38,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:38,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:24:38,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:24:38,496 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:24:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:38,519 INFO L93 Difference]: Finished difference Result 115 states and 135 transitions. [2025-02-06 10:24:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:24:38,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2025-02-06 10:24:38,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:38,520 INFO L225 Difference]: With dead ends: 115 [2025-02-06 10:24:38,520 INFO L226 Difference]: Without dead ends: 115 [2025-02-06 10:24:38,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:24:38,520 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 2 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:38,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 209 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:24:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-02-06 10:24:38,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2025-02-06 10:24:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.326086956521739) internal successors, (122), 105 states have internal predecessors, (122), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2025-02-06 10:24:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2025-02-06 10:24:38,523 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 53 [2025-02-06 10:24:38,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:38,523 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2025-02-06 10:24:38,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:24:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2025-02-06 10:24:38,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-06 10:24:38,524 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:38,524 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:38,532 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 10:24:38,724 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 10:24:38,725 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:38,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1818403163, now seen corresponding path program 1 times [2025-02-06 10:24:38,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:38,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737689339] [2025-02-06 10:24:38,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:24:38,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:38,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:38,729 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 10:24:38,729 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 10:24:38,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-06 10:24:38,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 10:24:38,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:24:38,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:38,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:24:38,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:38,830 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 10:24:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:24:38,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:24:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:24:39,030 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:39,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737689339] [2025-02-06 10:24:39,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737689339] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:24:39,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:24:39,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2025-02-06 10:24:39,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116350394] [2025-02-06 10:24:39,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:24:39,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:24:39,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:39,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:24:39,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:24:39,031 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:24:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:39,224 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2025-02-06 10:24:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:24:39,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2025-02-06 10:24:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:39,229 INFO L225 Difference]: With dead ends: 129 [2025-02-06 10:24:39,229 INFO L226 Difference]: Without dead ends: 129 [2025-02-06 10:24:39,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:24:39,229 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 39 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:39,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 205 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:24:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-02-06 10:24:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2025-02-06 10:24:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 106 states have internal predecessors, (124), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2025-02-06 10:24:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2025-02-06 10:24:39,235 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 53 [2025-02-06 10:24:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:39,235 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2025-02-06 10:24:39,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:24:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2025-02-06 10:24:39,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-06 10:24:39,235 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:39,235 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:39,245 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 10:24:39,436 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 10:24:39,436 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:39,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:39,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1818403162, now seen corresponding path program 1 times [2025-02-06 10:24:39,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:39,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293925631] [2025-02-06 10:24:39,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:24:39,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:39,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:39,439 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 10:24:39,440 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 10:24:39,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-06 10:24:39,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 10:24:39,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:24:39,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:39,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:24:39,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:39,555 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 10:24:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:24:39,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:24:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:24:40,293 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293925631] [2025-02-06 10:24:40,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293925631] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:24:40,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:24:40,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2025-02-06 10:24:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61836570] [2025-02-06 10:24:40,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:24:40,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 10:24:40,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:40,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 10:24:40,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:24:40,294 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:24:40,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:40,881 INFO L93 Difference]: Finished difference Result 150 states and 177 transitions. [2025-02-06 10:24:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:24:40,882 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 53 [2025-02-06 10:24:40,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:40,882 INFO L225 Difference]: With dead ends: 150 [2025-02-06 10:24:40,882 INFO L226 Difference]: Without dead ends: 150 [2025-02-06 10:24:40,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2025-02-06 10:24:40,883 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 82 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:40,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 599 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 10:24:40,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-02-06 10:24:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 136. [2025-02-06 10:24:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 115 states have (on average 1.4434782608695653) internal successors, (166), 128 states have internal predecessors, (166), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2025-02-06 10:24:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 177 transitions. [2025-02-06 10:24:40,888 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 177 transitions. Word has length 53 [2025-02-06 10:24:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:40,888 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 177 transitions. [2025-02-06 10:24:40,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:24:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 177 transitions. [2025-02-06 10:24:40,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-06 10:24:40,889 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:40,889 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:40,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-06 10:24:41,091 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 10:24:41,091 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:41,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:41,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2077364975, now seen corresponding path program 1 times [2025-02-06 10:24:41,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:41,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819941680] [2025-02-06 10:24:41,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:24:41,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:41,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:41,096 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 10:24:41,099 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 10:24:41,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 10:24:41,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 10:24:41,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:24:41,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:41,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:24:41,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2025-02-06 10:24:41,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:24:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2025-02-06 10:24:41,352 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:24:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819941680] [2025-02-06 10:24:41,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819941680] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:24:41,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:24:41,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 10:24:41,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238303429] [2025-02-06 10:24:41,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:24:41,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:24:41,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:24:41,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:24:41,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:24:41,353 INFO L87 Difference]: Start difference. First operand 136 states and 177 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:24:41,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:24:41,469 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2025-02-06 10:24:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:24:41,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2025-02-06 10:24:41,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:24:41,470 INFO L225 Difference]: With dead ends: 174 [2025-02-06 10:24:41,470 INFO L226 Difference]: Without dead ends: 174 [2025-02-06 10:24:41,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:24:41,470 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 70 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:24:41,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 207 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:24:41,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-02-06 10:24:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 168. [2025-02-06 10:24:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 143 states have (on average 1.4125874125874125) internal successors, (202), 154 states have internal predecessors, (202), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2025-02-06 10:24:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 225 transitions. [2025-02-06 10:24:41,475 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 225 transitions. Word has length 54 [2025-02-06 10:24:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:24:41,475 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 225 transitions. [2025-02-06 10:24:41,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:24:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 225 transitions. [2025-02-06 10:24:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-06 10:24:41,475 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:24:41,475 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:24:41,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-06 10:24:41,680 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 10:24:41,680 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:24:41,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:24:41,681 INFO L85 PathProgramCache]: Analyzing trace with hash -535923216, now seen corresponding path program 1 times [2025-02-06 10:24:41,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:24:41,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447631798] [2025-02-06 10:24:41,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:24:41,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:24:41,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:24:41,686 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 10:24:41,687 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 10:24:41,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 10:24:41,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 10:24:41,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:24:41,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:24:41,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-06 10:24:41,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:24:41,809 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 10:24:41,880 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 11 treesize of output 7 [2025-02-06 10:24:41,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-06 10:24:42,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:24:42,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-06 10:24:42,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2025-02-06 10:24:42,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:24:42,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-06 10:24:42,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:24:42,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-02-06 10:24:42,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:24:42,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2025-02-06 10:24:42,494 INFO L349 Elim1Store]: treesize reduction 120, result has 26.4 percent of original size [2025-02-06 10:24:42,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 56 treesize of output 70 [2025-02-06 10:24:42,622 INFO L349 Elim1Store]: treesize reduction 120, result has 26.4 percent of original size [2025-02-06 10:24:42,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 56 treesize of output 70 [2025-02-06 10:24:42,767 INFO L349 Elim1Store]: treesize reduction 120, result has 26.4 percent of original size [2025-02-06 10:24:42,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 56 treesize of output 70 [2025-02-06 10:24:42,901 INFO L349 Elim1Store]: treesize reduction 120, result has 26.4 percent of original size [2025-02-06 10:24:42,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 56 treesize of output 70 [2025-02-06 10:24:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 122 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-06 10:24:43,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:25:17,144 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 54 treesize of output 52 [2025-02-06 10:25:17,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 103 treesize of output 101 [2025-02-06 10:25:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 100 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-06 10:25:17,476 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:25:17,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447631798] [2025-02-06 10:25:17,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447631798] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:25:17,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:25:17,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 34 [2025-02-06 10:25:17,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376760800] [2025-02-06 10:25:17,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:25:17,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-06 10:25:17,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:25:17,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-06 10:25:17,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=935, Unknown=8, NotChecked=0, Total=1190 [2025-02-06 10:25:17,477 INFO L87 Difference]: Start difference. First operand 168 states and 225 transitions. Second operand has 35 states, 33 states have (on average 2.303030303030303) internal successors, (76), 34 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:25:21,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:25:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:25:24,564 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2025-02-06 10:25:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-06 10:25:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.303030303030303) internal successors, (76), 34 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2025-02-06 10:25:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:25:24,566 INFO L225 Difference]: With dead ends: 212 [2025-02-06 10:25:24,566 INFO L226 Difference]: Without dead ends: 212 [2025-02-06 10:25:24,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 64 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=586, Invalid=2598, Unknown=8, NotChecked=0, Total=3192 [2025-02-06 10:25:24,570 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 148 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:25:24,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 758 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 804 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2025-02-06 10:25:24,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2025-02-06 10:25:24,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 183. [2025-02-06 10:25:24,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 156 states have (on average 1.4166666666666667) internal successors, (221), 168 states have internal predecessors, (221), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2025-02-06 10:25:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 244 transitions. [2025-02-06 10:25:24,579 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 244 transitions. Word has length 54 [2025-02-06 10:25:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:25:24,579 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 244 transitions. [2025-02-06 10:25:24,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.303030303030303) internal successors, (76), 34 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:25:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 244 transitions. [2025-02-06 10:25:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-06 10:25:24,581 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:25:24,582 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:25:24,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-06 10:25:24,782 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 10:25:24,782 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-06 10:25:24,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:25:24,787 INFO L85 PathProgramCache]: Analyzing trace with hash 566249475, now seen corresponding path program 1 times [2025-02-06 10:25:24,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:25:24,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298711346] [2025-02-06 10:25:24,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:25:24,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:25:24,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:25:24,792 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 10:25:24,793 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 10:25:24,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 10:25:24,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 10:25:24,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:25:24,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:25:24,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-02-06 10:25:24,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:25:24,950 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 10:25:25,058 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 11 treesize of output 7 [2025-02-06 10:25:25,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-06 10:25:25,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:25:25,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-06 10:25:25,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2025-02-06 10:25:25,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:25:25,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-06 10:25:25,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:25:25,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-02-06 10:25:25,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:25:25,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2025-02-06 10:25:25,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:25:25,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2025-02-06 10:25:26,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:25:26,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2025-02-06 10:25:26,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:25:26,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2025-02-06 10:25:26,707 INFO L349 Elim1Store]: treesize reduction 180, result has 26.2 percent of original size [2025-02-06 10:25:26,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 77 treesize of output 100 [2025-02-06 10:25:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 146 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:25:27,743 INFO L312 TraceCheckSpWp]: Computing backward predicates...