./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:05:05,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:05:05,865 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:05:05,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:05:05,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:05:05,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:05:05,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:05:05,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:05:05,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:05:05,899 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:05:05,899 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:05:05,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:05:05,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:05:05,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:05:05,899 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:05:05,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:05:05,899 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:05:05,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:05:05,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:05:05,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:05:05,900 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:05:05,901 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:05:05,901 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:05:05,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:05:05,901 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:05:05,901 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:05:05,901 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:05:05,902 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:05:05,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:05:05,902 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2025-02-08 08:05:06,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:05:06,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:05:06,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:05:06,145 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:05:06,145 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:05:06,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2025-02-08 08:05:07,318 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e8ed55d64/89d13954a0cd452d8becdb47421e3f1f/FLAGfa224427f [2025-02-08 08:05:07,666 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:05:07,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2025-02-08 08:05:07,683 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e8ed55d64/89d13954a0cd452d8becdb47421e3f1f/FLAGfa224427f [2025-02-08 08:05:07,916 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e8ed55d64/89d13954a0cd452d8becdb47421e3f1f [2025-02-08 08:05:07,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:05:07,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:05:07,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:05:07,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:05:07,924 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:05:07,925 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:05:07" (1/1) ... [2025-02-08 08:05:07,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@755a91b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:07, skipping insertion in model container [2025-02-08 08:05:07,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:05:07" (1/1) ... [2025-02-08 08:05:07,963 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:05:08,232 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,263 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,266 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,269 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,273 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,293 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,293 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,295 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,295 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,297 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,298 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,298 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,299 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,302 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,304 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,306 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,307 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,308 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,308 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,311 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:08,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:05:08,324 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-02-08 08:05:08,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@702cb9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:08, skipping insertion in model container [2025-02-08 08:05:08,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:05:08,325 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-08 08:05:08,327 INFO L158 Benchmark]: Toolchain (without parser) took 406.90ms. Allocated memory is still 201.3MB. Free memory was 156.2MB in the beginning and 136.5MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:05:08,327 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 218.1MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:05:08,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.33ms. Allocated memory is still 201.3MB. Free memory was 156.2MB in the beginning and 136.5MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:05:08,328 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 218.1MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.33ms. Allocated memory is still 201.3MB. Free memory was 156.2MB in the beginning and 136.5MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 750]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:05:10,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:05:10,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 08:05:10,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:05:10,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:05:10,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:05:10,268 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:05:10,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:05:10,273 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:05:10,273 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:05:10,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:05:10,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:05:10,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:05:10,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:05:10,273 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:05:10,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:05:10,273 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:05:10,274 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:05:10,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 08:05:10,274 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 08:05:10,275 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:05:10,275 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:05:10,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:05:10,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:05:10,275 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2025-02-08 08:05:10,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:05:10,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:05:10,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:05:10,526 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:05:10,526 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:05:10,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2025-02-08 08:05:11,762 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d90c2792b/aa0eff3aa7b94b08828cbb6028ea97ba/FLAGf495af583 [2025-02-08 08:05:12,041 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:05:12,043 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2025-02-08 08:05:12,056 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d90c2792b/aa0eff3aa7b94b08828cbb6028ea97ba/FLAGf495af583 [2025-02-08 08:05:12,329 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d90c2792b/aa0eff3aa7b94b08828cbb6028ea97ba [2025-02-08 08:05:12,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:05:12,332 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:05:12,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:05:12,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:05:12,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:05:12,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:05:12" (1/1) ... [2025-02-08 08:05:12,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:12, skipping insertion in model container [2025-02-08 08:05:12,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:05:12" (1/1) ... [2025-02-08 08:05:12,373 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:05:12,649 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,676 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,681 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,684 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,691 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,722 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,725 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,727 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,730 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,732 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,735 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,736 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,736 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,743 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,744 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,749 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,749 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,750 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,750 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,757 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:05:12,782 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-08 08:05:12,791 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:05:12,815 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,825 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,826 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,827 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,830 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,861 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,861 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,863 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,863 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,866 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,867 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,867 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,868 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,869 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,873 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,874 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,875 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,875 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,875 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,880 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:12,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:05:12,888 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:05:12,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:05:13,010 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:05:13,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13 WrapperNode [2025-02-08 08:05:13,012 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:05:13,013 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:05:13,013 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:05:13,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:05:13,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,108 INFO L138 Inliner]: procedures = 180, calls = 325, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1165 [2025-02-08 08:05:13,109 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:05:13,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:05:13,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:05:13,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:05:13,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,255 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 266, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2025-02-08 08:05:13,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,320 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:05:13,356 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:05:13,357 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:05:13,357 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:05:13,357 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (1/1) ... [2025-02-08 08:05:13,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:05:13,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:13,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:05:13,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:05:13,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 08:05:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 08:05:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-08 08:05:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 08:05:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 08:05:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-08 08:05:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 08:05:13,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 08:05:13,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 08:05:13,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 08:05:13,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 08:05:13,448 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 08:05:13,448 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 08:05:13,448 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 08:05:13,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 08:05:13,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:05:13,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 08:05:13,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 08:05:13,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-08 08:05:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:05:13,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:05:13,633 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:05:13,634 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:05:16,232 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-08 08:05:16,341 INFO L? ?]: Removed 1298 outVars from TransFormulas that were not future-live. [2025-02-08 08:05:16,341 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:05:16,371 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:05:16,374 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:05:16,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:05:16 BoogieIcfgContainer [2025-02-08 08:05:16,375 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:05:16,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:05:16,377 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:05:16,381 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:05:16,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:05:12" (1/3) ... [2025-02-08 08:05:16,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342a2644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:05:16, skipping insertion in model container [2025-02-08 08:05:16,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:13" (2/3) ... [2025-02-08 08:05:16,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342a2644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:05:16, skipping insertion in model container [2025-02-08 08:05:16,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:05:16" (3/3) ... [2025-02-08 08:05:16,384 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test3-2.i [2025-02-08 08:05:16,394 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:05:16,395 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_nondet_test3-2.i that has 5 procedures, 1281 locations, 1 initial locations, 43 loop locations, and 630 error locations. [2025-02-08 08:05:16,441 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:05:16,450 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;@212d2f5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:05:16,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 630 error locations. [2025-02-08 08:05:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 1271 states, 636 states have (on average 2.2044025157232703) internal successors, (1402), 1264 states have internal predecessors, (1402), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 08:05:16,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 08:05:16,459 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:16,460 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 08:05:16,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:16,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1429457, now seen corresponding path program 1 times [2025-02-08 08:05:16,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:16,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736001597] [2025-02-08 08:05:16,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:16,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:16,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:16,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:16,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:05:16,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:05:16,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:05:16,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:16,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:16,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:05:16,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:16,637 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48| (_ bv0 1))))) is different from true [2025-02-08 08:05:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:16,640 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:16,640 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:16,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736001597] [2025-02-08 08:05:16,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736001597] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:16,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:16,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:05:16,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259573269] [2025-02-08 08:05:16,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:16,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:16,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:16,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:05:16,676 INFO L87 Difference]: Start difference. First operand has 1271 states, 636 states have (on average 2.2044025157232703) internal successors, (1402), 1264 states have internal predecessors, (1402), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:18,492 INFO L93 Difference]: Finished difference Result 1852 states and 1976 transitions. [2025-02-08 08:05:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:05:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-08 08:05:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:18,505 INFO L225 Difference]: With dead ends: 1852 [2025-02-08 08:05:18,505 INFO L226 Difference]: Without dead ends: 1849 [2025-02-08 08:05:18,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:05:18,507 INFO L435 NwaCegarLoop]: 1052 mSDtfsCounter, 625 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1977 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:18,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1742 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 945 Invalid, 0 Unknown, 1977 Unchecked, 1.7s Time] [2025-02-08 08:05:18,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2025-02-08 08:05:18,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1259. [2025-02-08 08:05:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 630 states have (on average 2.0904761904761906) internal successors, (1317), 1252 states have internal predecessors, (1317), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 08:05:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1327 transitions. [2025-02-08 08:05:18,564 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1327 transitions. Word has length 3 [2025-02-08 08:05:18,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:18,564 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 1327 transitions. [2025-02-08 08:05:18,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:18,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1327 transitions. [2025-02-08 08:05:18,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 08:05:18,565 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:18,565 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 08:05:18,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 08:05:18,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:18,766 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr627REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:18,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:18,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1430878, now seen corresponding path program 1 times [2025-02-08 08:05:18,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:18,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596538095] [2025-02-08 08:05:18,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:18,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:18,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:18,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:18,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:05:18,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:05:18,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:05:18,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:18,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:18,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:05:18,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:18,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:05:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:18,874 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:18,874 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:18,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596538095] [2025-02-08 08:05:18,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596538095] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:18,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:18,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:05:18,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266547038] [2025-02-08 08:05:18,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:18,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:05:18,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:18,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:05:18,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:05:18,875 INFO L87 Difference]: Start difference. First operand 1259 states and 1327 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:20,080 INFO L93 Difference]: Finished difference Result 1447 states and 1526 transitions. [2025-02-08 08:05:20,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:05:20,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-08 08:05:20,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:20,089 INFO L225 Difference]: With dead ends: 1447 [2025-02-08 08:05:20,089 INFO L226 Difference]: Without dead ends: 1447 [2025-02-08 08:05:20,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:05:20,089 INFO L435 NwaCegarLoop]: 765 mSDtfsCounter, 1170 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:20,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 931 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-08 08:05:20,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2025-02-08 08:05:20,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1258. [2025-02-08 08:05:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 639 states have (on average 2.0625978090766823) internal successors, (1318), 1250 states have internal predecessors, (1318), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 08:05:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1328 transitions. [2025-02-08 08:05:20,141 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1328 transitions. Word has length 3 [2025-02-08 08:05:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:20,141 INFO L471 AbstractCegarLoop]: Abstraction has 1258 states and 1328 transitions. [2025-02-08 08:05:20,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1328 transitions. [2025-02-08 08:05:20,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 08:05:20,141 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:20,142 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 08:05:20,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 08:05:20,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:20,342 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr628REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:20,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:20,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1430879, now seen corresponding path program 1 times [2025-02-08 08:05:20,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:20,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767637160] [2025-02-08 08:05:20,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:20,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:20,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:20,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:20,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:05:20,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:05:20,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:05:20,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:20,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:20,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:05:20,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:20,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:05:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:20,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:20,460 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:20,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767637160] [2025-02-08 08:05:20,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767637160] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:20,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:20,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:05:20,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833435913] [2025-02-08 08:05:20,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:20,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:05:20,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:20,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:05:20,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:05:20,461 INFO L87 Difference]: Start difference. First operand 1258 states and 1328 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:22,515 INFO L93 Difference]: Finished difference Result 1872 states and 1987 transitions. [2025-02-08 08:05:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:05:22,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-08 08:05:22,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:22,527 INFO L225 Difference]: With dead ends: 1872 [2025-02-08 08:05:22,528 INFO L226 Difference]: Without dead ends: 1872 [2025-02-08 08:05:22,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:05:22,535 INFO L435 NwaCegarLoop]: 1030 mSDtfsCounter, 653 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:22,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1734 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-08 08:05:22,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2025-02-08 08:05:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1476. [2025-02-08 08:05:22,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 857 states have (on average 2.040840140023337) internal successors, (1749), 1467 states have internal predecessors, (1749), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 08:05:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1761 transitions. [2025-02-08 08:05:22,570 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1761 transitions. Word has length 3 [2025-02-08 08:05:22,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:22,571 INFO L471 AbstractCegarLoop]: Abstraction has 1476 states and 1761 transitions. [2025-02-08 08:05:22,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:22,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1761 transitions. [2025-02-08 08:05:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 08:05:22,571 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:22,572 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:22,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 08:05:22,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:22,773 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr624REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:22,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 734422619, now seen corresponding path program 1 times [2025-02-08 08:05:22,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:22,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204525300] [2025-02-08 08:05:22,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:22,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:22,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:22,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:22,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 08:05:22,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:05:22,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:05:22,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:22,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:22,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:05:22,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:22,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:05:22,960 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-02-08 08:05:22,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2025-02-08 08:05:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:23,018 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:23,018 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204525300] [2025-02-08 08:05:23,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204525300] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:23,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:23,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:05:23,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410866050] [2025-02-08 08:05:23,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:23,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:23,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:23,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:23,019 INFO L87 Difference]: Start difference. First operand 1476 states and 1761 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:26,314 INFO L93 Difference]: Finished difference Result 2775 states and 2951 transitions. [2025-02-08 08:05:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:05:26,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 08:05:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:26,321 INFO L225 Difference]: With dead ends: 2775 [2025-02-08 08:05:26,321 INFO L226 Difference]: Without dead ends: 2775 [2025-02-08 08:05:26,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:26,322 INFO L435 NwaCegarLoop]: 1267 mSDtfsCounter, 1603 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:26,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 2672 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-02-08 08:05:26,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2025-02-08 08:05:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 1627. [2025-02-08 08:05:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1008 states have (on average 2.0218253968253967) internal successors, (2038), 1618 states have internal predecessors, (2038), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 08:05:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2050 transitions. [2025-02-08 08:05:26,345 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2050 transitions. Word has length 8 [2025-02-08 08:05:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:26,345 INFO L471 AbstractCegarLoop]: Abstraction has 1627 states and 2050 transitions. [2025-02-08 08:05:26,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2050 transitions. [2025-02-08 08:05:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 08:05:26,345 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:26,346 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:26,356 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 [2025-02-08 08:05:26,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:26,550 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr621REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:26,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:26,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1292266036, now seen corresponding path program 1 times [2025-02-08 08:05:26,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:26,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016975009] [2025-02-08 08:05:26,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:26,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:26,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:26,554 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:26,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:05:26,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 08:05:26,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 08:05:26,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:26,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:26,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:05:26,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:26,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:05:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:26,676 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:26,676 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:26,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016975009] [2025-02-08 08:05:26,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016975009] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:26,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:26,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:05:26,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467458769] [2025-02-08 08:05:26,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:26,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:05:26,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:26,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:05:26,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:05:26,677 INFO L87 Difference]: Start difference. First operand 1627 states and 2050 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:28,006 INFO L93 Difference]: Finished difference Result 2186 states and 2837 transitions. [2025-02-08 08:05:28,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:05:28,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 08:05:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:28,011 INFO L225 Difference]: With dead ends: 2186 [2025-02-08 08:05:28,011 INFO L226 Difference]: Without dead ends: 2186 [2025-02-08 08:05:28,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:05:28,012 INFO L435 NwaCegarLoop]: 1196 mSDtfsCounter, 952 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:28,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1562 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 08:05:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2025-02-08 08:05:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 1579. [2025-02-08 08:05:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1008 states have (on average 1.9632936507936507) internal successors, (1979), 1570 states have internal predecessors, (1979), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 08:05:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 1991 transitions. [2025-02-08 08:05:28,030 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 1991 transitions. Word has length 9 [2025-02-08 08:05:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:28,030 INFO L471 AbstractCegarLoop]: Abstraction has 1579 states and 1991 transitions. [2025-02-08 08:05:28,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 1991 transitions. [2025-02-08 08:05:28,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 08:05:28,030 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:28,030 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:28,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 08:05:28,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:28,231 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr622REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:28,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:28,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1292266037, now seen corresponding path program 1 times [2025-02-08 08:05:28,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:28,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450944654] [2025-02-08 08:05:28,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:28,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:28,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:28,234 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:28,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:05:28,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 08:05:28,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 08:05:28,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:28,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:28,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:05:28,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:28,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:05:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:28,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:28,381 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:28,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450944654] [2025-02-08 08:05:28,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450944654] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:28,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:28,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:05:28,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686348667] [2025-02-08 08:05:28,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:28,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:05:28,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:28,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:05:28,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:05:28,382 INFO L87 Difference]: Start difference. First operand 1579 states and 1991 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:30,184 INFO L93 Difference]: Finished difference Result 2288 states and 2939 transitions. [2025-02-08 08:05:30,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:05:30,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 08:05:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:30,190 INFO L225 Difference]: With dead ends: 2288 [2025-02-08 08:05:30,190 INFO L226 Difference]: Without dead ends: 2288 [2025-02-08 08:05:30,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:05:30,191 INFO L435 NwaCegarLoop]: 1383 mSDtfsCounter, 713 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:30,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1926 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-08 08:05:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2025-02-08 08:05:30,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 1608. [2025-02-08 08:05:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1047 states have (on average 1.9426934097421202) internal successors, (2034), 1599 states have internal predecessors, (2034), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 08:05:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2046 transitions. [2025-02-08 08:05:30,209 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2046 transitions. Word has length 9 [2025-02-08 08:05:30,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:30,209 INFO L471 AbstractCegarLoop]: Abstraction has 1608 states and 2046 transitions. [2025-02-08 08:05:30,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:30,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2046 transitions. [2025-02-08 08:05:30,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 08:05:30,210 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:30,210 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:30,218 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 [2025-02-08 08:05:30,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:30,410 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:30,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash -725005632, now seen corresponding path program 1 times [2025-02-08 08:05:30,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:30,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997402615] [2025-02-08 08:05:30,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:30,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:30,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:30,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:30,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 08:05:30,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:05:30,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:05:30,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:30,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:30,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:05:30,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:30,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:30,655 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:30,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997402615] [2025-02-08 08:05:30,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997402615] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:30,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:30,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:05:30,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401963860] [2025-02-08 08:05:30,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:30,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:30,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:30,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:30,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:30,656 INFO L87 Difference]: Start difference. First operand 1608 states and 2046 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:31,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:31,300 INFO L93 Difference]: Finished difference Result 2230 states and 2805 transitions. [2025-02-08 08:05:31,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:05:31,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-08 08:05:31,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:31,305 INFO L225 Difference]: With dead ends: 2230 [2025-02-08 08:05:31,306 INFO L226 Difference]: Without dead ends: 2230 [2025-02-08 08:05:31,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:05:31,306 INFO L435 NwaCegarLoop]: 1401 mSDtfsCounter, 640 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 3830 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:31,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 3830 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 08:05:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2025-02-08 08:05:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 1866. [2025-02-08 08:05:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1303 states have (on average 1.955487336914812) internal successors, (2548), 1855 states have internal predecessors, (2548), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-08 08:05:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2564 transitions. [2025-02-08 08:05:31,338 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2564 transitions. Word has length 13 [2025-02-08 08:05:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:31,338 INFO L471 AbstractCegarLoop]: Abstraction has 1866 states and 2564 transitions. [2025-02-08 08:05:31,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:31,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2564 transitions. [2025-02-08 08:05:31,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 08:05:31,339 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:31,339 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:31,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 08:05:31,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:31,543 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr297REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:31,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:31,543 INFO L85 PathProgramCache]: Analyzing trace with hash -539199353, now seen corresponding path program 1 times [2025-02-08 08:05:31,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:31,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651548680] [2025-02-08 08:05:31,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:31,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:31,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:31,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:31,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 08:05:31,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:05:31,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:05:31,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:31,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:31,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:05:31,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:31,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:05:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:31,683 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:31,683 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:31,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651548680] [2025-02-08 08:05:31,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651548680] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:31,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:31,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:05:31,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722102691] [2025-02-08 08:05:31,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:31,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:31,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:31,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:31,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:31,684 INFO L87 Difference]: Start difference. First operand 1866 states and 2564 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:33,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:33,294 INFO L93 Difference]: Finished difference Result 2053 states and 2694 transitions. [2025-02-08 08:05:33,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:05:33,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 08:05:33,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:33,299 INFO L225 Difference]: With dead ends: 2053 [2025-02-08 08:05:33,299 INFO L226 Difference]: Without dead ends: 2053 [2025-02-08 08:05:33,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:05:33,299 INFO L435 NwaCegarLoop]: 722 mSDtfsCounter, 1165 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:33,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1499 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 08:05:33,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2025-02-08 08:05:33,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1843. [2025-02-08 08:05:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1303 states have (on average 1.8848810437452033) internal successors, (2456), 1832 states have internal predecessors, (2456), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-08 08:05:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2472 transitions. [2025-02-08 08:05:33,318 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2472 transitions. Word has length 15 [2025-02-08 08:05:33,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:33,318 INFO L471 AbstractCegarLoop]: Abstraction has 1843 states and 2472 transitions. [2025-02-08 08:05:33,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:33,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2472 transitions. [2025-02-08 08:05:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 08:05:33,319 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:33,319 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:33,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 08:05:33,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:33,524 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr298REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:33,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:33,525 INFO L85 PathProgramCache]: Analyzing trace with hash -539199352, now seen corresponding path program 1 times [2025-02-08 08:05:33,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:33,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682302995] [2025-02-08 08:05:33,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:33,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:33,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:33,527 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:33,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 08:05:33,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:05:33,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:05:33,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:33,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:33,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:05:33,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:33,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:05:33,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:33,741 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:33,741 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:33,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682302995] [2025-02-08 08:05:33,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682302995] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:33,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:33,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:05:33,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058584285] [2025-02-08 08:05:33,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:33,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:33,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:33,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:33,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:33,741 INFO L87 Difference]: Start difference. First operand 1843 states and 2472 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:35,945 INFO L93 Difference]: Finished difference Result 2175 states and 2626 transitions. [2025-02-08 08:05:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:05:35,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 08:05:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:35,949 INFO L225 Difference]: With dead ends: 2175 [2025-02-08 08:05:35,949 INFO L226 Difference]: Without dead ends: 2175 [2025-02-08 08:05:35,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:05:35,950 INFO L435 NwaCegarLoop]: 979 mSDtfsCounter, 628 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:35,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 2243 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-08 08:05:35,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2025-02-08 08:05:35,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 1792. [2025-02-08 08:05:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1252 states have (on average 1.884185303514377) internal successors, (2359), 1781 states have internal predecessors, (2359), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-08 08:05:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2375 transitions. [2025-02-08 08:05:35,968 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2375 transitions. Word has length 15 [2025-02-08 08:05:35,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:35,968 INFO L471 AbstractCegarLoop]: Abstraction has 1792 states and 2375 transitions. [2025-02-08 08:05:35,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2375 transitions. [2025-02-08 08:05:35,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 08:05:35,969 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:35,969 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:35,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 08:05:36,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:36,173 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr274REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:36,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:36,175 INFO L85 PathProgramCache]: Analyzing trace with hash 464645255, now seen corresponding path program 1 times [2025-02-08 08:05:36,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:36,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243621851] [2025-02-08 08:05:36,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:36,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:36,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:36,178 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:36,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 08:05:36,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:05:36,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:05:36,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:36,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:36,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:05:36,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:36,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:36,297 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:36,297 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:36,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243621851] [2025-02-08 08:05:36,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243621851] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:36,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:36,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:05:36,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957392061] [2025-02-08 08:05:36,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:36,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:36,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:36,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:36,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:36,298 INFO L87 Difference]: Start difference. First operand 1792 states and 2375 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:36,348 INFO L93 Difference]: Finished difference Result 1720 states and 2252 transitions. [2025-02-08 08:05:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:05:36,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-08 08:05:36,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:36,351 INFO L225 Difference]: With dead ends: 1720 [2025-02-08 08:05:36,352 INFO L226 Difference]: Without dead ends: 1720 [2025-02-08 08:05:36,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:05:36,352 INFO L435 NwaCegarLoop]: 1155 mSDtfsCounter, 45 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:36,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3442 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:05:36,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2025-02-08 08:05:36,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1720. [2025-02-08 08:05:36,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1199 states have (on average 1.86488740617181) internal successors, (2236), 1709 states have internal predecessors, (2236), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-08 08:05:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2252 transitions. [2025-02-08 08:05:36,386 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2252 transitions. Word has length 16 [2025-02-08 08:05:36,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:36,386 INFO L471 AbstractCegarLoop]: Abstraction has 1720 states and 2252 transitions. [2025-02-08 08:05:36,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2252 transitions. [2025-02-08 08:05:36,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 08:05:36,386 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:36,386 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:36,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 08:05:36,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:36,591 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:36,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:36,592 INFO L85 PathProgramCache]: Analyzing trace with hash 738440070, now seen corresponding path program 1 times [2025-02-08 08:05:36,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:36,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808980589] [2025-02-08 08:05:36,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:36,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:36,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:36,594 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:36,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 08:05:36,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:05:36,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:05:36,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:36,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:36,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:05:36,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:36,772 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_49| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49|)))) is different from true [2025-02-08 08:05:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:36,772 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:36,773 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:36,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808980589] [2025-02-08 08:05:36,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808980589] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:36,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:36,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:05:36,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964408784] [2025-02-08 08:05:36,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:36,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:36,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:36,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:36,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:05:36,774 INFO L87 Difference]: Start difference. First operand 1720 states and 2252 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:37,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:37,877 INFO L93 Difference]: Finished difference Result 2015 states and 2622 transitions. [2025-02-08 08:05:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:05:37,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-08 08:05:37,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:37,881 INFO L225 Difference]: With dead ends: 2015 [2025-02-08 08:05:37,881 INFO L226 Difference]: Without dead ends: 2009 [2025-02-08 08:05:37,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-02-08 08:05:37,882 INFO L435 NwaCegarLoop]: 1077 mSDtfsCounter, 240 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1432 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:37,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1717 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 641 Invalid, 0 Unknown, 1432 Unchecked, 1.1s Time] [2025-02-08 08:05:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2025-02-08 08:05:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1778. [2025-02-08 08:05:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1256 states have (on average 1.8296178343949046) internal successors, (2298), 1766 states have internal predecessors, (2298), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 08:05:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2316 transitions. [2025-02-08 08:05:37,904 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2316 transitions. Word has length 16 [2025-02-08 08:05:37,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:37,904 INFO L471 AbstractCegarLoop]: Abstraction has 1778 states and 2316 transitions. [2025-02-08 08:05:37,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2316 transitions. [2025-02-08 08:05:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 08:05:37,906 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:37,906 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:37,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 08:05:38,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:38,110 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr613REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:38,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:38,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1374805543, now seen corresponding path program 1 times [2025-02-08 08:05:38,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:38,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489193559] [2025-02-08 08:05:38,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:38,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:38,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:38,113 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:38,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 08:05:38,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:05:38,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:05:38,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:38,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:38,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:05:38,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:38,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:05:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:38,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:38,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489193559] [2025-02-08 08:05:38,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489193559] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:38,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:38,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:05:38,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451062206] [2025-02-08 08:05:38,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:38,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:38,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:38,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:38,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:38,274 INFO L87 Difference]: Start difference. First operand 1778 states and 2316 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:39,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:39,973 INFO L93 Difference]: Finished difference Result 2222 states and 2868 transitions. [2025-02-08 08:05:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:05:39,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-08 08:05:39,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:39,982 INFO L225 Difference]: With dead ends: 2222 [2025-02-08 08:05:39,982 INFO L226 Difference]: Without dead ends: 2222 [2025-02-08 08:05:39,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:05:39,983 INFO L435 NwaCegarLoop]: 1046 mSDtfsCounter, 916 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:39,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 2101 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-08 08:05:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2025-02-08 08:05:40,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1755. [2025-02-08 08:05:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1256 states have (on average 1.7929936305732483) internal successors, (2252), 1743 states have internal predecessors, (2252), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 08:05:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2270 transitions. [2025-02-08 08:05:40,011 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2270 transitions. Word has length 19 [2025-02-08 08:05:40,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:40,012 INFO L471 AbstractCegarLoop]: Abstraction has 1755 states and 2270 transitions. [2025-02-08 08:05:40,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:40,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2270 transitions. [2025-02-08 08:05:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 08:05:40,013 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:40,014 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:40,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 08:05:40,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:40,214 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr614REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:40,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:40,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1374805544, now seen corresponding path program 1 times [2025-02-08 08:05:40,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:40,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266878684] [2025-02-08 08:05:40,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:40,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:40,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:40,218 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:40,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 08:05:40,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:05:40,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:05:40,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:40,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:40,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:05:40,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:40,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:05:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:40,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:40,501 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:40,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266878684] [2025-02-08 08:05:40,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266878684] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:40,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:40,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:05:40,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765159977] [2025-02-08 08:05:40,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:40,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:40,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:40,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:40,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:40,502 INFO L87 Difference]: Start difference. First operand 1755 states and 2270 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:42,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:42,897 INFO L93 Difference]: Finished difference Result 2413 states and 3053 transitions. [2025-02-08 08:05:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:05:42,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-08 08:05:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:42,904 INFO L225 Difference]: With dead ends: 2413 [2025-02-08 08:05:42,906 INFO L226 Difference]: Without dead ends: 2413 [2025-02-08 08:05:42,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:05:42,906 INFO L435 NwaCegarLoop]: 1324 mSDtfsCounter, 750 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:42,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 2671 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-08 08:05:42,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2025-02-08 08:05:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1869. [2025-02-08 08:05:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1370 states have (on average 1.7445255474452555) internal successors, (2390), 1857 states have internal predecessors, (2390), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 08:05:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2408 transitions. [2025-02-08 08:05:42,923 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2408 transitions. Word has length 19 [2025-02-08 08:05:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:42,924 INFO L471 AbstractCegarLoop]: Abstraction has 1869 states and 2408 transitions. [2025-02-08 08:05:42,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2408 transitions. [2025-02-08 08:05:42,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-08 08:05:42,925 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:42,925 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:42,933 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 [2025-02-08 08:05:43,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:43,126 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr614REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:43,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:43,127 INFO L85 PathProgramCache]: Analyzing trace with hash 5675769, now seen corresponding path program 1 times [2025-02-08 08:05:43,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:43,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555622831] [2025-02-08 08:05:43,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:43,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:43,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:43,129 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:43,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 08:05:43,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 08:05:43,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 08:05:43,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:43,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:43,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:05:43,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:43,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:05:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:43,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:05:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:43,809 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:43,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555622831] [2025-02-08 08:05:43,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555622831] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:05:43,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:05:43,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 08:05:43,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491069861] [2025-02-08 08:05:43,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:05:43,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:05:43,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:43,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:05:43,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:05:43,810 INFO L87 Difference]: Start difference. First operand 1869 states and 2408 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:50,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:50,225 INFO L93 Difference]: Finished difference Result 2769 states and 3543 transitions. [2025-02-08 08:05:50,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:05:50,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-02-08 08:05:50,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:50,233 INFO L225 Difference]: With dead ends: 2769 [2025-02-08 08:05:50,233 INFO L226 Difference]: Without dead ends: 2769 [2025-02-08 08:05:50,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-08 08:05:50,234 INFO L435 NwaCegarLoop]: 1351 mSDtfsCounter, 1399 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 4127 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:50,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 4127 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2025-02-08 08:05:50,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2025-02-08 08:05:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2033. [2025-02-08 08:05:50,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1534 states have (on average 1.7092568448500651) internal successors, (2622), 2021 states have internal predecessors, (2622), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 08:05:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2640 transitions. [2025-02-08 08:05:50,252 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2640 transitions. Word has length 38 [2025-02-08 08:05:50,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:50,252 INFO L471 AbstractCegarLoop]: Abstraction has 2033 states and 2640 transitions. [2025-02-08 08:05:50,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:50,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2640 transitions. [2025-02-08 08:05:50,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-08 08:05:50,254 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:50,254 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:50,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 08:05:50,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:50,455 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr213REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:50,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:50,455 INFO L85 PathProgramCache]: Analyzing trace with hash -391483568, now seen corresponding path program 1 times [2025-02-08 08:05:50,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:50,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479348206] [2025-02-08 08:05:50,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:50,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:50,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:50,458 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:50,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 08:05:50,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-08 08:05:50,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-08 08:05:50,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:50,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:50,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:05:50,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:50,643 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:50,643 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:50,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479348206] [2025-02-08 08:05:50,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479348206] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:50,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:50,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:05:50,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156128732] [2025-02-08 08:05:50,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:50,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:05:50,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:50,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:05:50,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:05:50,644 INFO L87 Difference]: Start difference. First operand 2033 states and 2640 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:50,695 INFO L93 Difference]: Finished difference Result 2024 states and 2305 transitions. [2025-02-08 08:05:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:05:50,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-02-08 08:05:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:50,704 INFO L225 Difference]: With dead ends: 2024 [2025-02-08 08:05:50,704 INFO L226 Difference]: Without dead ends: 2024 [2025-02-08 08:05:50,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:05:50,704 INFO L435 NwaCegarLoop]: 1432 mSDtfsCounter, 323 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:50,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 2514 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:05:50,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2025-02-08 08:05:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1647. [2025-02-08 08:05:50,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1150 states have (on average 1.637391304347826) internal successors, (1883), 1637 states have internal predecessors, (1883), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 08:05:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 1897 transitions. [2025-02-08 08:05:50,723 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 1897 transitions. Word has length 49 [2025-02-08 08:05:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:50,724 INFO L471 AbstractCegarLoop]: Abstraction has 1647 states and 1897 transitions. [2025-02-08 08:05:50,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:50,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 1897 transitions. [2025-02-08 08:05:50,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-08 08:05:50,725 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:50,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:50,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 08:05:50,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:50,926 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:50,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:50,927 INFO L85 PathProgramCache]: Analyzing trace with hash -903701895, now seen corresponding path program 1 times [2025-02-08 08:05:50,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:50,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705805466] [2025-02-08 08:05:50,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:50,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:50,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:50,930 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:50,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 08:05:51,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-08 08:05:51,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-08 08:05:51,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:51,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:51,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:05:51,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:51,105 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:51,105 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:51,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705805466] [2025-02-08 08:05:51,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705805466] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:51,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:51,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:05:51,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375067822] [2025-02-08 08:05:51,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:51,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:51,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:51,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:51,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:51,106 INFO L87 Difference]: Start difference. First operand 1647 states and 1897 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:51,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:51,144 INFO L93 Difference]: Finished difference Result 1629 states and 1867 transitions. [2025-02-08 08:05:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:05:51,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-02-08 08:05:51,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:51,147 INFO L225 Difference]: With dead ends: 1629 [2025-02-08 08:05:51,147 INFO L226 Difference]: Without dead ends: 1629 [2025-02-08 08:05:51,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:05:51,148 INFO L435 NwaCegarLoop]: 1134 mSDtfsCounter, 27 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:51,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3365 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:05:51,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2025-02-08 08:05:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2025-02-08 08:05:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1132 states have (on average 1.6369257950530036) internal successors, (1853), 1619 states have internal predecessors, (1853), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 08:05:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 1867 transitions. [2025-02-08 08:05:51,158 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 1867 transitions. Word has length 52 [2025-02-08 08:05:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:51,158 INFO L471 AbstractCegarLoop]: Abstraction has 1629 states and 1867 transitions. [2025-02-08 08:05:51,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 1867 transitions. [2025-02-08 08:05:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-08 08:05:51,158 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:51,158 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:51,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-08 08:05:51,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:51,363 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr532REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:51,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash -416382412, now seen corresponding path program 1 times [2025-02-08 08:05:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:51,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999269040] [2025-02-08 08:05:51,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:51,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:51,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:51,366 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:51,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 08:05:51,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-08 08:05:51,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 08:05:51,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:51,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:51,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:05:51,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:51,615 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:51,615 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:51,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999269040] [2025-02-08 08:05:51,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999269040] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:51,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:51,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:05:51,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034744292] [2025-02-08 08:05:51,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:51,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:51,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:51,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:51,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:51,615 INFO L87 Difference]: Start difference. First operand 1629 states and 1867 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:51,680 INFO L93 Difference]: Finished difference Result 1318 states and 1431 transitions. [2025-02-08 08:05:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:05:51,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2025-02-08 08:05:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:51,683 INFO L225 Difference]: With dead ends: 1318 [2025-02-08 08:05:51,683 INFO L226 Difference]: Without dead ends: 1318 [2025-02-08 08:05:51,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:05:51,683 INFO L435 NwaCegarLoop]: 1088 mSDtfsCounter, 56 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:51,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3191 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 08:05:51,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2025-02-08 08:05:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2025-02-08 08:05:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 842 states have (on average 1.680522565320665) internal successors, (1415), 1306 states have internal predecessors, (1415), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 08:05:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1429 transitions. [2025-02-08 08:05:51,698 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1429 transitions. Word has length 54 [2025-02-08 08:05:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:51,698 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1429 transitions. [2025-02-08 08:05:51,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:51,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1429 transitions. [2025-02-08 08:05:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 08:05:51,700 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:51,700 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:51,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 08:05:51,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:51,904 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:51,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:51,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1833297471, now seen corresponding path program 1 times [2025-02-08 08:05:51,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:51,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889666239] [2025-02-08 08:05:51,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:51,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:51,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:51,907 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:51,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 08:05:52,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 08:05:52,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 08:05:52,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:52,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:52,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:05:52,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:52,076 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 08:05:52,076 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 08:05:52,076 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 08:05:52,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-02-08 08:05:52,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 08:05:52,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-02-08 08:05:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:52,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:52,169 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:52,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889666239] [2025-02-08 08:05:52,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889666239] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:52,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:52,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:05:52,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565012899] [2025-02-08 08:05:52,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:52,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:05:52,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:52,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:05:52,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:05:52,170 INFO L87 Difference]: Start difference. First operand 1316 states and 1429 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:52,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:52,448 INFO L93 Difference]: Finished difference Result 1995 states and 2155 transitions. [2025-02-08 08:05:52,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:05:52,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-02-08 08:05:52,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:52,451 INFO L225 Difference]: With dead ends: 1995 [2025-02-08 08:05:52,451 INFO L226 Difference]: Without dead ends: 1991 [2025-02-08 08:05:52,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:05:52,451 INFO L435 NwaCegarLoop]: 1292 mSDtfsCounter, 2238 mSDsluCounter, 3149 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:52,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 4441 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 08:05:52,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2025-02-08 08:05:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1263. [2025-02-08 08:05:52,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 790 states have (on average 1.7240506329113925) internal successors, (1362), 1254 states have internal predecessors, (1362), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 08:05:52,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1374 transitions. [2025-02-08 08:05:52,462 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1374 transitions. Word has length 60 [2025-02-08 08:05:52,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:52,462 INFO L471 AbstractCegarLoop]: Abstraction has 1263 states and 1374 transitions. [2025-02-08 08:05:52,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1374 transitions. [2025-02-08 08:05:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 08:05:52,462 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:52,462 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:52,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 08:05:52,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:52,663 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr532REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:52,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:52,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1914570108, now seen corresponding path program 1 times [2025-02-08 08:05:52,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:52,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325945251] [2025-02-08 08:05:52,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:52,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:52,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:52,666 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:52,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 08:05:52,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 08:05:52,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 08:05:52,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:52,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:52,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:05:52,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:52,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:05:52,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:05:53,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 08:05:53,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 08:05:53,185 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 08:05:53,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 08:05:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:53,191 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:53,191 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:53,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325945251] [2025-02-08 08:05:53,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325945251] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:53,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:53,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:05:53,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812405680] [2025-02-08 08:05:53,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:53,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:53,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:53,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:53,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:53,193 INFO L87 Difference]: Start difference. First operand 1263 states and 1374 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:54,865 INFO L93 Difference]: Finished difference Result 1604 states and 1742 transitions. [2025-02-08 08:05:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:05:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-02-08 08:05:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:54,868 INFO L225 Difference]: With dead ends: 1604 [2025-02-08 08:05:54,868 INFO L226 Difference]: Without dead ends: 1604 [2025-02-08 08:05:54,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:54,868 INFO L435 NwaCegarLoop]: 540 mSDtfsCounter, 1823 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:54,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 791 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-08 08:05:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2025-02-08 08:05:54,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1186. [2025-02-08 08:05:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 751 states have (on average 1.6617842876165114) internal successors, (1248), 1177 states have internal predecessors, (1248), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 08:05:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1260 transitions. [2025-02-08 08:05:54,894 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1260 transitions. Word has length 62 [2025-02-08 08:05:54,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:54,894 INFO L471 AbstractCegarLoop]: Abstraction has 1186 states and 1260 transitions. [2025-02-08 08:05:54,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:54,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1260 transitions. [2025-02-08 08:05:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-08 08:05:54,895 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:54,895 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:54,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 08:05:55,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:55,096 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:55,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash -882099566, now seen corresponding path program 1 times [2025-02-08 08:05:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:55,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192326529] [2025-02-08 08:05:55,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:55,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:55,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:55,099 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:55,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 08:05:55,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-08 08:05:55,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 08:05:55,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:55,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:55,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:05:55,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:55,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:05:55,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:05:55,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-08 08:05:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:55,326 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:55,326 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:55,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192326529] [2025-02-08 08:05:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192326529] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:55,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:55,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:05:55,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900750524] [2025-02-08 08:05:55,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:55,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:05:55,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:55,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:05:55,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:05:55,327 INFO L87 Difference]: Start difference. First operand 1186 states and 1260 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:56,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:56,959 INFO L93 Difference]: Finished difference Result 1185 states and 1259 transitions. [2025-02-08 08:05:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:05:56,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-08 08:05:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:56,961 INFO L225 Difference]: With dead ends: 1185 [2025-02-08 08:05:56,961 INFO L226 Difference]: Without dead ends: 1185 [2025-02-08 08:05:56,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:05:56,962 INFO L435 NwaCegarLoop]: 1060 mSDtfsCounter, 2 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:56,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2768 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 08:05:56,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2025-02-08 08:05:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2025-02-08 08:05:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 751 states have (on average 1.6604527296937417) internal successors, (1247), 1176 states have internal predecessors, (1247), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 08:05:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1259 transitions. [2025-02-08 08:05:56,969 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1259 transitions. Word has length 67 [2025-02-08 08:05:56,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:56,969 INFO L471 AbstractCegarLoop]: Abstraction has 1185 states and 1259 transitions. [2025-02-08 08:05:56,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1259 transitions. [2025-02-08 08:05:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-08 08:05:56,969 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:56,970 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:56,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 08:05:57,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:57,174 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:57,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:57,175 INFO L85 PathProgramCache]: Analyzing trace with hash -882099565, now seen corresponding path program 1 times [2025-02-08 08:05:57,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:57,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654706569] [2025-02-08 08:05:57,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:57,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:57,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:57,177 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:57,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 08:05:57,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-08 08:05:57,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 08:05:57,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:57,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:57,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 08:05:57,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:57,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:05:57,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 08:05:57,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:05:57,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-08 08:05:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:57,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:57,439 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:57,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654706569] [2025-02-08 08:05:57,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654706569] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:57,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:57,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:05:57,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070639745] [2025-02-08 08:05:57,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:57,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:05:57,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:57,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:05:57,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:05:57,441 INFO L87 Difference]: Start difference. First operand 1185 states and 1259 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:59,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:59,322 INFO L93 Difference]: Finished difference Result 1184 states and 1258 transitions. [2025-02-08 08:05:59,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:05:59,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-08 08:05:59,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:59,325 INFO L225 Difference]: With dead ends: 1184 [2025-02-08 08:05:59,325 INFO L226 Difference]: Without dead ends: 1184 [2025-02-08 08:05:59,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:05:59,326 INFO L435 NwaCegarLoop]: 1060 mSDtfsCounter, 1 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:59,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2774 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-08 08:05:59,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2025-02-08 08:05:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1184. [2025-02-08 08:05:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 750 states have (on average 1.6613333333333333) internal successors, (1246), 1175 states have internal predecessors, (1246), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 08:05:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1258 transitions. [2025-02-08 08:05:59,334 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1258 transitions. Word has length 67 [2025-02-08 08:05:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:59,334 INFO L471 AbstractCegarLoop]: Abstraction has 1184 states and 1258 transitions. [2025-02-08 08:05:59,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:05:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1258 transitions. [2025-02-08 08:05:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-08 08:05:59,334 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:59,334 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:59,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 08:05:59,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:59,535 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:05:59,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:05:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash -565661680, now seen corresponding path program 1 times [2025-02-08 08:05:59,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:05:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377537580] [2025-02-08 08:05:59,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:05:59,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:05:59,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:59,538 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:05:59,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 08:05:59,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-08 08:05:59,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-08 08:05:59,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:05:59,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:05:59,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:05:59,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:05:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:05:59,762 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:05:59,762 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:05:59,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377537580] [2025-02-08 08:05:59,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377537580] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:05:59,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:05:59,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:05:59,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538415894] [2025-02-08 08:05:59,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:05:59,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:05:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:05:59,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:05:59,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:59,764 INFO L87 Difference]: Start difference. First operand 1184 states and 1258 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 08:05:59,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:05:59,809 INFO L93 Difference]: Finished difference Result 1187 states and 1262 transitions. [2025-02-08 08:05:59,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:05:59,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-08 08:05:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:05:59,813 INFO L225 Difference]: With dead ends: 1187 [2025-02-08 08:05:59,814 INFO L226 Difference]: Without dead ends: 1187 [2025-02-08 08:05:59,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:05:59,815 INFO L435 NwaCegarLoop]: 1060 mSDtfsCounter, 0 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:05:59,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3175 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:05:59,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2025-02-08 08:05:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1187. [2025-02-08 08:05:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 752 states have (on average 1.6609042553191489) internal successors, (1249), 1178 states have internal predecessors, (1249), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-08 08:05:59,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1262 transitions. [2025-02-08 08:05:59,839 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1262 transitions. Word has length 75 [2025-02-08 08:05:59,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:05:59,839 INFO L471 AbstractCegarLoop]: Abstraction has 1187 states and 1262 transitions. [2025-02-08 08:05:59,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 08:05:59,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1262 transitions. [2025-02-08 08:05:59,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-08 08:05:59,840 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:05:59,840 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:05:59,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-08 08:06:00,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:00,041 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:06:00,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:00,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1656265390, now seen corresponding path program 1 times [2025-02-08 08:06:00,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:06:00,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991554226] [2025-02-08 08:06:00,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:00,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:00,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:06:00,044 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:06:00,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 08:06:00,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-08 08:06:00,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 08:06:00,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:00,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:00,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:06:00,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:06:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:00,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:06:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:00,301 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:06:00,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991554226] [2025-02-08 08:06:00,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991554226] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:06:00,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:06:00,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-08 08:06:00,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616656845] [2025-02-08 08:06:00,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:06:00,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:06:00,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:06:00,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:06:00,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:06:00,303 INFO L87 Difference]: Start difference. First operand 1187 states and 1262 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:06:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:00,394 INFO L93 Difference]: Finished difference Result 1199 states and 1279 transitions. [2025-02-08 08:06:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:06:00,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2025-02-08 08:06:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:00,396 INFO L225 Difference]: With dead ends: 1199 [2025-02-08 08:06:00,397 INFO L226 Difference]: Without dead ends: 1199 [2025-02-08 08:06:00,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-08 08:06:00,397 INFO L435 NwaCegarLoop]: 1060 mSDtfsCounter, 8 mSDsluCounter, 5281 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6341 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:00,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6341 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 08:06:00,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2025-02-08 08:06:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1197. [2025-02-08 08:06:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 761 states have (on average 1.6609724047306176) internal successors, (1264), 1187 states have internal predecessors, (1264), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-08 08:06:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1277 transitions. [2025-02-08 08:06:00,406 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1277 transitions. Word has length 76 [2025-02-08 08:06:00,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:00,406 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 1277 transitions. [2025-02-08 08:06:00,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:06:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1277 transitions. [2025-02-08 08:06:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-08 08:06:00,406 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:00,406 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:06:00,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-08 08:06:00,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:00,607 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:06:00,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:00,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1883072400, now seen corresponding path program 2 times [2025-02-08 08:06:00,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:06:00,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700525322] [2025-02-08 08:06:00,608 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:06:00,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:00,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:06:00,610 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:06:00,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 08:06:00,761 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-08 08:06:12,601 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 08:06:12,602 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:06:12,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:12,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 08:06:12,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:06:12,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:06:12,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:06:12,707 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 08:06:12,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 08:06:12,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 08:06:12,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:06:12,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-02-08 08:06:12,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-08 08:06:12,907 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:06:12,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-02-08 08:06:12,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-02-08 08:06:12,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-02-08 08:06:12,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-08 08:06:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 08:06:12,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:06:13,079 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1271 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_1270 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1271 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1270) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-02-08 08:06:13,083 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:06:13,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700525322] [2025-02-08 08:06:13,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700525322] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:06:13,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1025630718] [2025-02-08 08:06:13,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:06:13,083 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 08:06:13,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 08:06:13,085 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 08:06:13,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2025-02-08 08:06:13,316 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-08 08:06:14,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 08:06:14,048 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:06:14,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:14,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:06:14,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:06:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:14,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:06:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:14,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1025630718] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:06:14,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:06:14,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-02-08 08:06:14,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362759042] [2025-02-08 08:06:14,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:06:14,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 08:06:14,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:06:14,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 08:06:14,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=423, Unknown=1, NotChecked=42, Total=552 [2025-02-08 08:06:14,364 INFO L87 Difference]: Start difference. First operand 1197 states and 1277 transitions. Second operand has 21 states, 20 states have (on average 7.7) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 08:06:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:21,699 INFO L93 Difference]: Finished difference Result 1596 states and 1707 transitions. [2025-02-08 08:06:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 08:06:21,701 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 7.7) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2025-02-08 08:06:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:21,704 INFO L225 Difference]: With dead ends: 1596 [2025-02-08 08:06:21,704 INFO L226 Difference]: Without dead ends: 1586 [2025-02-08 08:06:21,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=314, Invalid=1669, Unknown=1, NotChecked=86, Total=2070 [2025-02-08 08:06:21,705 INFO L435 NwaCegarLoop]: 700 mSDtfsCounter, 758 mSDsluCounter, 6874 mSDsCounter, 0 mSdLazyCounter, 6183 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 7574 SdHoareTripleChecker+Invalid, 6209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 6183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:21,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 7574 Invalid, 6209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 6183 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2025-02-08 08:06:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2025-02-08 08:06:21,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1205. [2025-02-08 08:06:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 770 states have (on average 1.6506493506493507) internal successors, (1271), 1195 states have internal predecessors, (1271), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-08 08:06:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1284 transitions. [2025-02-08 08:06:21,722 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1284 transitions. Word has length 79 [2025-02-08 08:06:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:21,722 INFO L471 AbstractCegarLoop]: Abstraction has 1205 states and 1284 transitions. [2025-02-08 08:06:21,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 7.7) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 08:06:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1284 transitions. [2025-02-08 08:06:21,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-02-08 08:06:21,723 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:21,723 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:06:21,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 08:06:21,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2025-02-08 08:06:22,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-08 08:06:22,125 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:06:22,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1504185649, now seen corresponding path program 1 times [2025-02-08 08:06:22,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:06:22,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557653571] [2025-02-08 08:06:22,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:22,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:22,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:06:22,129 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:06:22,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-08 08:06:22,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-02-08 08:06:22,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-02-08 08:06:22,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:22,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:22,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 08:06:22,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:06:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:22,531 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:06:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:22,871 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:06:22,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557653571] [2025-02-08 08:06:22,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557653571] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:06:22,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:06:22,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-08 08:06:22,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80626852] [2025-02-08 08:06:22,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:06:22,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 08:06:22,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:06:22,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 08:06:22,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-08 08:06:22,873 INFO L87 Difference]: Start difference. First operand 1205 states and 1284 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:06:23,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:23,993 INFO L93 Difference]: Finished difference Result 1229 states and 1323 transitions. [2025-02-08 08:06:23,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 08:06:23,994 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2025-02-08 08:06:23,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:23,996 INFO L225 Difference]: With dead ends: 1229 [2025-02-08 08:06:23,996 INFO L226 Difference]: Without dead ends: 1223 [2025-02-08 08:06:23,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 08:06:23,997 INFO L435 NwaCegarLoop]: 1059 mSDtfsCounter, 25 mSDsluCounter, 12672 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13731 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:23,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 13731 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 08:06:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2025-02-08 08:06:24,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2025-02-08 08:06:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 788 states have (on average 1.6421319796954315) internal successors, (1294), 1213 states have internal predecessors, (1294), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-08 08:06:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1307 transitions. [2025-02-08 08:06:24,008 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1307 transitions. Word has length 85 [2025-02-08 08:06:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:24,009 INFO L471 AbstractCegarLoop]: Abstraction has 1223 states and 1307 transitions. [2025-02-08 08:06:24,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 08:06:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1307 transitions. [2025-02-08 08:06:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 08:06:24,009 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:24,009 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:06:24,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-08 08:06:24,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:24,216 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2025-02-08 08:06:24,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1091615055, now seen corresponding path program 2 times [2025-02-08 08:06:24,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:06:24,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892485446] [2025-02-08 08:06:24,217 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:06:24,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:24,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:06:24,219 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:06:24,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-08 08:06:24,400 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-02-08 08:06:45,208 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 08:06:45,209 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:06:45,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:45,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-08 08:06:45,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:06:45,311 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 08:06:45,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 08:06:45,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:06:45,507 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:06:45,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-08 08:06:45,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-02-08 08:06:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-02-08 08:06:45,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:06:45,653 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-08 08:06:45,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-02-08 08:06:45,678 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:06:45,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892485446] [2025-02-08 08:06:45,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892485446] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:06:45,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [176828382] [2025-02-08 08:06:45,678 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:06:45,678 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 08:06:45,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 08:06:45,680 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 08:06:45,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2025-02-08 08:06:45,941 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-02-08 08:06:46,813 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 08:06:46,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:06:46,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:46,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 08:06:46,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:06:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:47,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:06:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:48,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [176828382] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:06:48,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:06:48,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 26, 26] total 59 [2025-02-08 08:06:48,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470760907] [2025-02-08 08:06:48,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:06:48,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-02-08 08:06:48,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:06:48,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-02-08 08:06:48,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2955, Unknown=5, NotChecked=0, Total=3660 [2025-02-08 08:06:48,616 INFO L87 Difference]: Start difference. First operand 1223 states and 1307 transitions. Second operand has 59 states, 58 states have (on average 3.2241379310344827) internal successors, (187), 58 states have internal predecessors, (187), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)