./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:38:15,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:38:15,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:38:15,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:38:15,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:38:15,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:38:15,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:38:15,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:38:15,226 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:38:15,226 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:38:15,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:38:15,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:38:15,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:38:15,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:38:15,226 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:38:15,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:38:15,226 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:38:15,226 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:38:15,227 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:38:15,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:38:15,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:38:15,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:38:15,229 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:38:15,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:38:15,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:38:15,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:38:15,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:38:15,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:38:15,229 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/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 -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2025-03-09 00:38:15,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:38:15,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:38:15,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:38:15,453 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:38:15,454 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:38:15,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2025-03-09 00:38:16,560 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d28e489f/6af9a5c6ba534846b2c0c1bbaa51db27/FLAGb0f6b2710 [2025-03-09 00:38:16,875 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:38:16,877 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2025-03-09 00:38:16,893 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d28e489f/6af9a5c6ba534846b2c0c1bbaa51db27/FLAGb0f6b2710 [2025-03-09 00:38:16,906 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d28e489f/6af9a5c6ba534846b2c0c1bbaa51db27 [2025-03-09 00:38:16,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:38:16,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:38:16,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:38:16,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:38:16,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:38:16,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:38:16" (1/1) ... [2025-03-09 00:38:16,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c78ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:16, skipping insertion in model container [2025-03-09 00:38:16,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:38:16" (1/1) ... [2025-03-09 00:38:16,950 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:38:17,178 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,202 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,207 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,212 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,221 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,239 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,239 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,240 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,241 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,242 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,243 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,244 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,245 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,245 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,248 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:17,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:38:17,262 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) [2025-03-09 00:38:17,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50485398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:17, skipping insertion in model container [2025-03-09 00:38:17,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:38:17,267 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 00:38:17,268 INFO L158 Benchmark]: Toolchain (without parser) took 358.27ms. Allocated memory is still 167.8MB. Free memory was 127.6MB in the beginning and 107.9MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 00:38:17,273 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 125.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:38:17,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.65ms. Allocated memory is still 167.8MB. Free memory was 127.2MB in the beginning and 107.9MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 00:38:17,274 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 125.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.65ms. Allocated memory is still 167.8MB. Free memory was 127.2MB in the beginning and 107.9MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 831]: 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/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:38:18,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:38:19,029 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 00:38:19,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:38:19,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:38:19,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:38:19,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:38:19,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:38:19,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:38:19,065 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:38:19,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:38:19,065 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:38:19,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:38:19,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:38:19,066 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:38:19,067 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:38:19,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:38:19,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:38:19,067 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/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 -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2025-03-09 00:38:19,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:38:19,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:38:19,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:38:19,350 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:38:19,350 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:38:19,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2025-03-09 00:38:20,516 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9601f557e/d5191520a7124908a05902112019d380/FLAG108a50a1b [2025-03-09 00:38:20,787 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:38:20,790 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2025-03-09 00:38:20,806 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9601f557e/d5191520a7124908a05902112019d380/FLAG108a50a1b [2025-03-09 00:38:21,073 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9601f557e/d5191520a7124908a05902112019d380 [2025-03-09 00:38:21,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:38:21,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:38:21,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:38:21,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:38:21,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:38:21,080 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6237ac15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21, skipping insertion in model container [2025-03-09 00:38:21,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,124 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:38:21,359 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,389 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,393 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,396 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,402 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,427 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,428 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,429 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,429 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,430 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,432 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,433 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,434 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,434 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,437 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:38:21,455 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 00:38:21,474 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:38:21,511 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,532 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,533 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,537 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,542 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,565 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,566 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,568 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,570 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,571 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,572 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,573 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,575 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,575 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,577 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:38:21,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:38:21,585 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:38:21,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:38:21,681 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:38:21,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21 WrapperNode [2025-03-09 00:38:21,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:38:21,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:38:21,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:38:21,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:38:21,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,742 INFO L138 Inliner]: procedures = 210, calls = 273, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1014 [2025-03-09 00:38:21,742 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:38:21,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:38:21,743 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:38:21,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:38:21,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,778 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,824 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 218, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2025-03-09 00:38:21,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,865 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,882 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:38:21,882 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:38:21,882 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:38:21,882 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:38:21,883 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (1/1) ... [2025-03-09 00:38:21,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:38:21,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:21,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 00:38:21,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 00:38:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-09 00:38:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-09 00:38:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-09 00:38:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 00:38:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 00:38:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-09 00:38:21,923 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-09 00:38:21,923 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-09 00:38:21,923 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-09 00:38:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:38:21,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:38:22,073 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:38:22,075 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:38:24,464 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L812: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-09 00:38:24,528 INFO L? ?]: Removed 1086 outVars from TransFormulas that were not future-live. [2025-03-09 00:38:24,528 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:38:24,565 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:38:24,570 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:38:24,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:38:24 BoogieIcfgContainer [2025-03-09 00:38:24,570 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:38:24,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:38:24,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:38:24,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:38:24,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:38:21" (1/3) ... [2025-03-09 00:38:24,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ab77d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:38:24, skipping insertion in model container [2025-03-09 00:38:24,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:38:21" (2/3) ... [2025-03-09 00:38:24,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ab77d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:38:24, skipping insertion in model container [2025-03-09 00:38:24,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:38:24" (3/3) ... [2025-03-09 00:38:24,580 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test2-2.i [2025-03-09 00:38:24,591 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:38:24,592 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_nondet_test2-2.i that has 4 procedures, 1063 locations, 1 initial locations, 36 loop locations, and 525 error locations. [2025-03-09 00:38:24,648 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:38:24,659 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;@6b4ccad3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:38:24,659 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2025-03-09 00:38:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 1053 states, 526 states have (on average 2.222433460076046) internal successors, (1169), 1048 states have internal predecessors, (1169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:24,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-09 00:38:24,670 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:24,671 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-09 00:38:24,671 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:24,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:24,675 INFO L85 PathProgramCache]: Analyzing trace with hash 37400338, now seen corresponding path program 1 times [2025-03-09 00:38:24,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:24,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682862068] [2025-03-09 00:38:24,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:24,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:24,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:24,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:24,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 00:38:24,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 00:38:24,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 00:38:24,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:24,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:24,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:38:24,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:24,888 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 [2025-03-09 00:38:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:24,892 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:24,893 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:24,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682862068] [2025-03-09 00:38:24,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682862068] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:24,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:24,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:38:24,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806604417] [2025-03-09 00:38:24,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:24,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:24,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:24,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:24,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-09 00:38:24,917 INFO L87 Difference]: Start difference. First operand has 1053 states, 526 states have (on average 2.222433460076046) internal successors, (1169), 1048 states have internal predecessors, (1169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:38:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:26,331 INFO L93 Difference]: Finished difference Result 1438 states and 1539 transitions. [2025-03-09 00:38:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:38:26,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-09 00:38:26,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:26,347 INFO L225 Difference]: With dead ends: 1438 [2025-03-09 00:38:26,347 INFO L226 Difference]: Without dead ends: 1435 [2025-03-09 00:38:26,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-09 00:38:26,350 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 423 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1540 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:26,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1469 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 739 Invalid, 0 Unknown, 1540 Unchecked, 1.3s Time] [2025-03-09 00:38:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2025-03-09 00:38:26,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1041. [2025-03-09 00:38:26,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 520 states have (on average 2.1) internal successors, (1092), 1036 states have internal predecessors, (1092), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1098 transitions. [2025-03-09 00:38:26,428 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1098 transitions. Word has length 4 [2025-03-09 00:38:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:26,428 INFO L471 AbstractCegarLoop]: Abstraction has 1041 states and 1098 transitions. [2025-03-09 00:38:26,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:38:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1098 transitions. [2025-03-09 00:38:26,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-09 00:38:26,429 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:26,429 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-09 00:38:26,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 00:38:26,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:26,634 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:26,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash 37401532, now seen corresponding path program 1 times [2025-03-09 00:38:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:26,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019243536] [2025-03-09 00:38:26,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:26,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:26,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:26,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:26,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 00:38:26,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 00:38:26,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 00:38:26,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:26,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:26,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:38:26,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:26,734 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 [2025-03-09 00:38:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:26,741 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:26,741 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019243536] [2025-03-09 00:38:26,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019243536] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:26,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:26,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:38:26,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73275224] [2025-03-09 00:38:26,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:26,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:38:26,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:26,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:38:26,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:38:26,743 INFO L87 Difference]: Start difference. First operand 1041 states and 1098 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:38:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:27,837 INFO L93 Difference]: Finished difference Result 1216 states and 1283 transitions. [2025-03-09 00:38:27,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:38:27,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-09 00:38:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:27,840 INFO L225 Difference]: With dead ends: 1216 [2025-03-09 00:38:27,841 INFO L226 Difference]: Without dead ends: 1216 [2025-03-09 00:38:27,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:38:27,841 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 962 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:27,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 769 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-09 00:38:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2025-03-09 00:38:27,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1038. [2025-03-09 00:38:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 528 states have (on average 2.0643939393939394) internal successors, (1090), 1033 states have internal predecessors, (1090), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1096 transitions. [2025-03-09 00:38:27,857 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1096 transitions. Word has length 4 [2025-03-09 00:38:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:27,857 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1096 transitions. [2025-03-09 00:38:27,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:38:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1096 transitions. [2025-03-09 00:38:27,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-09 00:38:27,858 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:27,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-09 00:38:27,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 00:38:28,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:28,058 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr524REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:28,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:28,059 INFO L85 PathProgramCache]: Analyzing trace with hash 37401533, now seen corresponding path program 1 times [2025-03-09 00:38:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:28,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181722215] [2025-03-09 00:38:28,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:28,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:28,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:28,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:28,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 00:38:28,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 00:38:28,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 00:38:28,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:28,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:28,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:38:28,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:28,169 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 [2025-03-09 00:38:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:28,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:28,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:28,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181722215] [2025-03-09 00:38:28,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181722215] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:28,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:28,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:38:28,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298482612] [2025-03-09 00:38:28,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:28,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:38:28,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:28,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:38:28,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:38:28,187 INFO L87 Difference]: Start difference. First operand 1038 states and 1096 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:38:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:29,679 INFO L93 Difference]: Finished difference Result 1446 states and 1536 transitions. [2025-03-09 00:38:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:38:29,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-09 00:38:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:29,684 INFO L225 Difference]: With dead ends: 1446 [2025-03-09 00:38:29,684 INFO L226 Difference]: Without dead ends: 1446 [2025-03-09 00:38:29,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:38:29,686 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 440 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:29,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1469 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-09 00:38:29,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2025-03-09 00:38:29,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1161. [2025-03-09 00:38:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 652 states have (on average 2.0199386503067487) internal successors, (1317), 1156 states have internal predecessors, (1317), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1323 transitions. [2025-03-09 00:38:29,706 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1323 transitions. Word has length 4 [2025-03-09 00:38:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:29,706 INFO L471 AbstractCegarLoop]: Abstraction has 1161 states and 1323 transitions. [2025-03-09 00:38:29,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:38:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1323 transitions. [2025-03-09 00:38:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:38:29,706 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:29,707 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:29,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 00:38:29,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:29,911 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:29,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:29,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1008455512, now seen corresponding path program 1 times [2025-03-09 00:38:29,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:29,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737984673] [2025-03-09 00:38:29,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:29,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:29,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:29,914 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:29,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 00:38:29,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:38:30,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:38:30,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:30,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:30,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:38:30,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:30,020 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 [2025-03-09 00:38:30,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:38:30,084 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 [2025-03-09 00:38:30,097 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:38:30,098 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 [2025-03-09 00:38:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:30,113 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:30,113 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:30,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737984673] [2025-03-09 00:38:30,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737984673] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:30,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:30,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:38:30,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114754945] [2025-03-09 00:38:30,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:30,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:30,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:30,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:30,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:30,114 INFO L87 Difference]: Start difference. First operand 1161 states and 1323 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2025-03-09 00:38:31,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:31,817 INFO L93 Difference]: Finished difference Result 1328 states and 1498 transitions. [2025-03-09 00:38:31,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:38:31,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2025-03-09 00:38:31,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:31,821 INFO L225 Difference]: With dead ends: 1328 [2025-03-09 00:38:31,821 INFO L226 Difference]: Without dead ends: 1328 [2025-03-09 00:38:31,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:31,822 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 2198 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:31,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2201 Valid, 438 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-09 00:38:31,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2025-03-09 00:38:31,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1026. [2025-03-09 00:38:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 528 states have (on average 2.039772727272727) internal successors, (1077), 1021 states have internal predecessors, (1077), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1083 transitions. [2025-03-09 00:38:31,837 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1083 transitions. Word has length 8 [2025-03-09 00:38:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:31,837 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1083 transitions. [2025-03-09 00:38:31,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2025-03-09 00:38:31,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1083 transitions. [2025-03-09 00:38:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-09 00:38:31,838 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:31,838 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:31,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 00:38:32,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:32,039 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:32,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1197350901, now seen corresponding path program 1 times [2025-03-09 00:38:32,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:32,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059446999] [2025-03-09 00:38:32,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:32,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:32,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:32,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:32,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 00:38:32,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 00:38:32,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 00:38:32,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:32,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:32,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:38:32,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:32,129 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 [2025-03-09 00:38:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:32,141 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:32,141 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:32,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059446999] [2025-03-09 00:38:32,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059446999] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:32,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:32,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:38:32,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961339524] [2025-03-09 00:38:32,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:32,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:38:32,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:32,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:38:32,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:38:32,142 INFO L87 Difference]: Start difference. First operand 1026 states and 1083 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) [2025-03-09 00:38:33,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:33,132 INFO L93 Difference]: Finished difference Result 1189 states and 1267 transitions. [2025-03-09 00:38:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:38:33,132 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 [2025-03-09 00:38:33,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:33,135 INFO L225 Difference]: With dead ends: 1189 [2025-03-09 00:38:33,136 INFO L226 Difference]: Without dead ends: 1189 [2025-03-09 00:38:33,136 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 [2025-03-09 00:38:33,136 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 744 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:33,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1106 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-09 00:38:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2025-03-09 00:38:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 979. [2025-03-09 00:38:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 528 states have (on average 1.9507575757575757) internal successors, (1030), 974 states have internal predecessors, (1030), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1036 transitions. [2025-03-09 00:38:33,149 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1036 transitions. Word has length 9 [2025-03-09 00:38:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:33,149 INFO L471 AbstractCegarLoop]: Abstraction has 979 states and 1036 transitions. [2025-03-09 00:38:33,149 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) [2025-03-09 00:38:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1036 transitions. [2025-03-09 00:38:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-09 00:38:33,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:33,150 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:33,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 00:38:33,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:33,350 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:33,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:33,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1197350902, now seen corresponding path program 1 times [2025-03-09 00:38:33,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:33,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982090276] [2025-03-09 00:38:33,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:33,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:33,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:33,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:33,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 00:38:33,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 00:38:33,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 00:38:33,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:33,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:33,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:38:33,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:33,450 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 [2025-03-09 00:38:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:33,468 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:33,468 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:33,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982090276] [2025-03-09 00:38:33,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982090276] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:33,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:33,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:38:33,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480097771] [2025-03-09 00:38:33,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:33,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:38:33,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:33,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:38:33,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:38:33,470 INFO L87 Difference]: Start difference. First operand 979 states and 1036 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) [2025-03-09 00:38:34,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:34,736 INFO L93 Difference]: Finished difference Result 1265 states and 1346 transitions. [2025-03-09 00:38:34,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:38:34,737 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 [2025-03-09 00:38:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:34,740 INFO L225 Difference]: With dead ends: 1265 [2025-03-09 00:38:34,740 INFO L226 Difference]: Without dead ends: 1265 [2025-03-09 00:38:34,740 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 [2025-03-09 00:38:34,740 INFO L435 NwaCegarLoop]: 1035 mSDtfsCounter, 496 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:34,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1451 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-09 00:38:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2025-03-09 00:38:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1006. [2025-03-09 00:38:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 565 states have (on average 1.936283185840708) internal successors, (1094), 1001 states have internal predecessors, (1094), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1100 transitions. [2025-03-09 00:38:34,755 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1100 transitions. Word has length 9 [2025-03-09 00:38:34,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:34,756 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1100 transitions. [2025-03-09 00:38:34,756 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) [2025-03-09 00:38:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1100 transitions. [2025-03-09 00:38:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-09 00:38:34,756 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:34,756 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:34,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 00:38:34,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:34,961 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:34,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:34,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1285481171, now seen corresponding path program 1 times [2025-03-09 00:38:34,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:34,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527133186] [2025-03-09 00:38:34,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:34,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:34,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:34,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:34,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 00:38:35,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 00:38:35,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 00:38:35,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:35,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:35,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:38:35,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:35,124 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:35,124 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:35,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527133186] [2025-03-09 00:38:35,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527133186] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:35,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:35,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:38:35,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977174602] [2025-03-09 00:38:35,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:35,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:38:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:35,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:38:35,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:38:35,125 INFO L87 Difference]: Start difference. First operand 1006 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2025-03-09 00:38:35,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:35,269 INFO L93 Difference]: Finished difference Result 1440 states and 1589 transitions. [2025-03-09 00:38:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:38:35,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2025-03-09 00:38:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:35,273 INFO L225 Difference]: With dead ends: 1440 [2025-03-09 00:38:35,274 INFO L226 Difference]: Without dead ends: 1440 [2025-03-09 00:38:35,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:38:35,274 INFO L435 NwaCegarLoop]: 1086 mSDtfsCounter, 460 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:35,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 2019 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:38:35,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2025-03-09 00:38:35,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1176. [2025-03-09 00:38:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 735 states have (on average 1.8816326530612244) internal successors, (1383), 1171 states have internal predecessors, (1383), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1389 transitions. [2025-03-09 00:38:35,291 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1389 transitions. Word has length 12 [2025-03-09 00:38:35,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:35,291 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1389 transitions. [2025-03-09 00:38:35,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2025-03-09 00:38:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1389 transitions. [2025-03-09 00:38:35,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 00:38:35,292 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:35,292 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:35,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 00:38:35,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:35,494 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr193REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:35,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1202042993, now seen corresponding path program 1 times [2025-03-09 00:38:35,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:35,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321379651] [2025-03-09 00:38:35,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:35,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:35,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:35,497 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:35,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 00:38:35,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:38:35,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:38:35,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:35,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:35,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:38:35,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:35,620 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:35,620 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:35,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321379651] [2025-03-09 00:38:35,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321379651] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:35,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:35,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:38:35,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268156608] [2025-03-09 00:38:35,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:35,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:35,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:35,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:35,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:35,621 INFO L87 Difference]: Start difference. First operand 1176 states and 1389 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2025-03-09 00:38:36,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:36,805 INFO L93 Difference]: Finished difference Result 1339 states and 1538 transitions. [2025-03-09 00:38:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:38:36,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 [2025-03-09 00:38:36,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:36,808 INFO L225 Difference]: With dead ends: 1339 [2025-03-09 00:38:36,808 INFO L226 Difference]: Without dead ends: 1339 [2025-03-09 00:38:36,808 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 [2025-03-09 00:38:36,809 INFO L435 NwaCegarLoop]: 581 mSDtfsCounter, 961 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:36,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1207 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-09 00:38:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2025-03-09 00:38:36,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1153. [2025-03-09 00:38:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 735 states have (on average 1.819047619047619) internal successors, (1337), 1148 states have internal predecessors, (1337), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:36,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1343 transitions. [2025-03-09 00:38:36,821 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1343 transitions. Word has length 13 [2025-03-09 00:38:36,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:36,821 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1343 transitions. [2025-03-09 00:38:36,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2025-03-09 00:38:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1343 transitions. [2025-03-09 00:38:36,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 00:38:36,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:36,822 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:36,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 00:38:37,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:37,023 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr194REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:37,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:37,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1202042994, now seen corresponding path program 1 times [2025-03-09 00:38:37,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:37,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005700326] [2025-03-09 00:38:37,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:37,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:37,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:37,025 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:37,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 00:38:37,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:38:37,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:38:37,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:37,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:37,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:38:37,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:37,129 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 [2025-03-09 00:38:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:37,180 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:37,180 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:37,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005700326] [2025-03-09 00:38:37,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005700326] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:37,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:37,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:38:37,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709661566] [2025-03-09 00:38:37,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:37,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:37,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:37,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:37,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:37,181 INFO L87 Difference]: Start difference. First operand 1153 states and 1343 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2025-03-09 00:38:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:38,739 INFO L93 Difference]: Finished difference Result 1428 states and 1633 transitions. [2025-03-09 00:38:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:38:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 [2025-03-09 00:38:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:38,743 INFO L225 Difference]: With dead ends: 1428 [2025-03-09 00:38:38,743 INFO L226 Difference]: Without dead ends: 1428 [2025-03-09 00:38:38,743 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 [2025-03-09 00:38:38,745 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 333 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:38,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1881 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-09 00:38:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2025-03-09 00:38:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1217. [2025-03-09 00:38:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 799 states have (on average 1.7709637046307884) internal successors, (1415), 1212 states have internal predecessors, (1415), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1421 transitions. [2025-03-09 00:38:38,758 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1421 transitions. Word has length 13 [2025-03-09 00:38:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:38,758 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 1421 transitions. [2025-03-09 00:38:38,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2025-03-09 00:38:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1421 transitions. [2025-03-09 00:38:38,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-09 00:38:38,758 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:38,758 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:38,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 00:38:38,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:38,963 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr170REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:38,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1391417084, now seen corresponding path program 1 times [2025-03-09 00:38:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:38,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061814860] [2025-03-09 00:38:38,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:38,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:38,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:38,966 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:38,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 00:38:39,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 00:38:39,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 00:38:39,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:39,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:39,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:38:39,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:39,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:39,098 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:39,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061814860] [2025-03-09 00:38:39,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061814860] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:39,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:39,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:38:39,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57988238] [2025-03-09 00:38:39,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:39,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:39,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:39,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:39,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:39,099 INFO L87 Difference]: Start difference. First operand 1217 states and 1421 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:38:39,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:39,137 INFO L93 Difference]: Finished difference Result 1139 states and 1300 transitions. [2025-03-09 00:38:39,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:38:39,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-09 00:38:39,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:39,139 INFO L225 Difference]: With dead ends: 1139 [2025-03-09 00:38:39,139 INFO L226 Difference]: Without dead ends: 1139 [2025-03-09 00:38:39,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:38:39,140 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 45 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2722 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 [2025-03-09 00:38:39,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2722 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:38:39,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2025-03-09 00:38:39,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2025-03-09 00:38:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 740 states have (on average 1.7486486486486486) internal successors, (1294), 1134 states have internal predecessors, (1294), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1300 transitions. [2025-03-09 00:38:39,150 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1300 transitions. Word has length 14 [2025-03-09 00:38:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:39,150 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1300 transitions. [2025-03-09 00:38:39,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:38:39,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1300 transitions. [2025-03-09 00:38:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-09 00:38:39,151 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:39,151 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:39,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 00:38:39,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:39,352 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:39,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:39,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1603207986, now seen corresponding path program 1 times [2025-03-09 00:38:39,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:39,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922514164] [2025-03-09 00:38:39,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:39,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:39,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:39,354 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:39,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 00:38:39,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 00:38:39,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 00:38:39,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:39,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:39,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:38:39,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:39,517 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 [2025-03-09 00:38:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:39,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:39,518 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:39,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922514164] [2025-03-09 00:38:39,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922514164] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:39,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:39,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:38:39,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572110424] [2025-03-09 00:38:39,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:39,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:39,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:39,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:39,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-09 00:38:39,519 INFO L87 Difference]: Start difference. First operand 1139 states and 1300 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:38:40,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:40,336 INFO L93 Difference]: Finished difference Result 1324 states and 1492 transitions. [2025-03-09 00:38:40,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:38:40,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-09 00:38:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:40,339 INFO L225 Difference]: With dead ends: 1324 [2025-03-09 00:38:40,339 INFO L226 Difference]: Without dead ends: 1323 [2025-03-09 00:38:40,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-09 00:38:40,339 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 241 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1188 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:40,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1350 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 528 Invalid, 0 Unknown, 1188 Unchecked, 0.8s Time] [2025-03-09 00:38:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2025-03-09 00:38:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1143. [2025-03-09 00:38:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 744 states have (on average 1.7446236559139785) internal successors, (1298), 1138 states have internal predecessors, (1298), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1304 transitions. [2025-03-09 00:38:40,352 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1304 transitions. Word has length 14 [2025-03-09 00:38:40,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:40,352 INFO L471 AbstractCegarLoop]: Abstraction has 1143 states and 1304 transitions. [2025-03-09 00:38:40,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:38:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1304 transitions. [2025-03-09 00:38:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-09 00:38:40,353 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:40,353 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:40,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 00:38:40,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:40,553 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:40,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:40,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1840368562, now seen corresponding path program 1 times [2025-03-09 00:38:40,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:40,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476633254] [2025-03-09 00:38:40,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:40,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:40,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:40,556 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:40,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 00:38:40,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 00:38:40,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 00:38:40,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:40,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:40,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:38:40,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:40,696 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:40,696 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:40,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476633254] [2025-03-09 00:38:40,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476633254] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:40,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:40,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:38:40,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921833623] [2025-03-09 00:38:40,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:40,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:40,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:40,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:40,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:40,696 INFO L87 Difference]: Start difference. First operand 1143 states and 1304 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2025-03-09 00:38:41,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:41,023 INFO L93 Difference]: Finished difference Result 1367 states and 1505 transitions. [2025-03-09 00:38:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:38:41,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 [2025-03-09 00:38:41,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:41,026 INFO L225 Difference]: With dead ends: 1367 [2025-03-09 00:38:41,026 INFO L226 Difference]: Without dead ends: 1363 [2025-03-09 00:38:41,026 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 [2025-03-09 00:38:41,026 INFO L435 NwaCegarLoop]: 1008 mSDtfsCounter, 380 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:41,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 2761 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 00:38:41,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2025-03-09 00:38:41,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1141. [2025-03-09 00:38:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 742 states have (on average 1.7452830188679245) internal successors, (1295), 1136 states have internal predecessors, (1295), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1301 transitions. [2025-03-09 00:38:41,036 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1301 transitions. Word has length 15 [2025-03-09 00:38:41,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:41,036 INFO L471 AbstractCegarLoop]: Abstraction has 1141 states and 1301 transitions. [2025-03-09 00:38:41,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2025-03-09 00:38:41,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1301 transitions. [2025-03-09 00:38:41,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-09 00:38:41,037 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:41,037 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:41,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 00:38:41,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:41,237 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:41,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash -972787444, now seen corresponding path program 1 times [2025-03-09 00:38:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:41,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890423678] [2025-03-09 00:38:41,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:41,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:41,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:41,240 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:41,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 00:38:41,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 00:38:41,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 00:38:41,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:41,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:41,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:38:41,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:41,353 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 [2025-03-09 00:38:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:41,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:41,381 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:41,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890423678] [2025-03-09 00:38:41,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890423678] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:41,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:41,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:38:41,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379977821] [2025-03-09 00:38:41,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:41,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:41,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:41,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:41,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:41,382 INFO L87 Difference]: Start difference. First operand 1141 states and 1301 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2025-03-09 00:38:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:42,414 INFO L93 Difference]: Finished difference Result 1129 states and 1265 transitions. [2025-03-09 00:38:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:38:42,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2025-03-09 00:38:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:42,416 INFO L225 Difference]: With dead ends: 1129 [2025-03-09 00:38:42,416 INFO L226 Difference]: Without dead ends: 1129 [2025-03-09 00:38:42,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:38:42,417 INFO L435 NwaCegarLoop]: 624 mSDtfsCounter, 709 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:42,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1232 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-09 00:38:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2025-03-09 00:38:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1118. [2025-03-09 00:38:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 742 states have (on average 1.6832884097035041) internal successors, (1249), 1113 states have internal predecessors, (1249), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1255 transitions. [2025-03-09 00:38:42,425 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1255 transitions. Word has length 18 [2025-03-09 00:38:42,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:42,425 INFO L471 AbstractCegarLoop]: Abstraction has 1118 states and 1255 transitions. [2025-03-09 00:38:42,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2025-03-09 00:38:42,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1255 transitions. [2025-03-09 00:38:42,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-09 00:38:42,426 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:42,426 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:42,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 00:38:42,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:42,626 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:42,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash -972787443, now seen corresponding path program 1 times [2025-03-09 00:38:42,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:42,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915399479] [2025-03-09 00:38:42,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:42,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:42,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:42,629 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:42,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 00:38:42,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 00:38:42,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 00:38:42,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:42,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:42,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:38:42,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:42,755 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 [2025-03-09 00:38:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:42,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:42,808 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:42,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915399479] [2025-03-09 00:38:42,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915399479] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:42,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:42,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:38:42,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686367591] [2025-03-09 00:38:42,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:42,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:42,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:42,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:42,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:42,808 INFO L87 Difference]: Start difference. First operand 1118 states and 1255 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2025-03-09 00:38:44,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:44,287 INFO L93 Difference]: Finished difference Result 1497 states and 1647 transitions. [2025-03-09 00:38:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:38:44,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2025-03-09 00:38:44,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:44,291 INFO L225 Difference]: With dead ends: 1497 [2025-03-09 00:38:44,291 INFO L226 Difference]: Without dead ends: 1497 [2025-03-09 00:38:44,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:38:44,291 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 534 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:44,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1949 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-09 00:38:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2025-03-09 00:38:44,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1232. [2025-03-09 00:38:44,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 856 states have (on average 1.6203271028037383) internal successors, (1387), 1227 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1393 transitions. [2025-03-09 00:38:44,302 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1393 transitions. Word has length 18 [2025-03-09 00:38:44,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:44,302 INFO L471 AbstractCegarLoop]: Abstraction has 1232 states and 1393 transitions. [2025-03-09 00:38:44,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2025-03-09 00:38:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1393 transitions. [2025-03-09 00:38:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-09 00:38:44,303 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:44,303 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] [2025-03-09 00:38:44,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-09 00:38:44,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:44,508 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:44,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash -707935181, now seen corresponding path program 1 times [2025-03-09 00:38:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:44,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573089642] [2025-03-09 00:38:44,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:44,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:44,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:44,511 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:44,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 00:38:44,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-09 00:38:44,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-09 00:38:44,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:44,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:44,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:38:44,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:44,669 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 [2025-03-09 00:38:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:44,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:38:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:45,110 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573089642] [2025-03-09 00:38:45,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573089642] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:38:45,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:38:45,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:38:45,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151655031] [2025-03-09 00:38:45,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:38:45,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:38:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:45,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:38:45,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:38:45,111 INFO L87 Difference]: Start difference. First operand 1232 states and 1393 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 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) [2025-03-09 00:38:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:49,730 INFO L93 Difference]: Finished difference Result 1853 states and 2137 transitions. [2025-03-09 00:38:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:38:49,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 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 37 [2025-03-09 00:38:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:49,734 INFO L225 Difference]: With dead ends: 1853 [2025-03-09 00:38:49,734 INFO L226 Difference]: Without dead ends: 1853 [2025-03-09 00:38:49,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-09 00:38:49,735 INFO L435 NwaCegarLoop]: 1001 mSDtfsCounter, 1295 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:49,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 3033 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-03-09 00:38:49,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2025-03-09 00:38:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1396. [2025-03-09 00:38:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1020 states have (on average 1.5872549019607842) internal successors, (1619), 1391 states have internal predecessors, (1619), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1625 transitions. [2025-03-09 00:38:49,747 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1625 transitions. Word has length 37 [2025-03-09 00:38:49,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:49,747 INFO L471 AbstractCegarLoop]: Abstraction has 1396 states and 1625 transitions. [2025-03-09 00:38:49,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 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) [2025-03-09 00:38:49,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1625 transitions. [2025-03-09 00:38:49,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-09 00:38:49,748 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:49,748 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] [2025-03-09 00:38:49,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-09 00:38:49,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:49,949 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr110ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:49,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:49,950 INFO L85 PathProgramCache]: Analyzing trace with hash -822847652, now seen corresponding path program 1 times [2025-03-09 00:38:49,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:49,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992778529] [2025-03-09 00:38:49,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:49,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:49,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:49,952 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:49,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 00:38:50,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-09 00:38:50,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-09 00:38:50,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:50,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:50,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:38:50,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:50,103 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:50,104 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:50,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992778529] [2025-03-09 00:38:50,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992778529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:50,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:50,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:38:50,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938513011] [2025-03-09 00:38:50,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:50,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:50,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:50,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:50,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:50,104 INFO L87 Difference]: Start difference. First operand 1396 states and 1625 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-09 00:38:50,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:50,147 INFO L93 Difference]: Finished difference Result 1378 states and 1595 transitions. [2025-03-09 00:38:50,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:38:50,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 48 [2025-03-09 00:38:50,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:50,150 INFO L225 Difference]: With dead ends: 1378 [2025-03-09 00:38:50,150 INFO L226 Difference]: Without dead ends: 1378 [2025-03-09 00:38:50,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:38:50,151 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 27 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2645 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 [2025-03-09 00:38:50,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2645 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:38:50,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2025-03-09 00:38:50,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1378. [2025-03-09 00:38:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1002 states have (on average 1.5858283433133733) internal successors, (1589), 1373 states have internal predecessors, (1589), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1595 transitions. [2025-03-09 00:38:50,162 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1595 transitions. Word has length 48 [2025-03-09 00:38:50,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:50,162 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1595 transitions. [2025-03-09 00:38:50,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-09 00:38:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1595 transitions. [2025-03-09 00:38:50,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-09 00:38:50,164 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:50,164 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] [2025-03-09 00:38:50,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-09 00:38:50,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:50,366 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:50,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:50,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1752552212, now seen corresponding path program 1 times [2025-03-09 00:38:50,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:50,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20932054] [2025-03-09 00:38:50,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:50,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:50,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:50,369 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:50,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 00:38:50,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-09 00:38:50,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-09 00:38:50,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:50,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:50,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:38:50,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:50,575 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:50,576 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:50,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20932054] [2025-03-09 00:38:50,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20932054] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:50,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:50,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:38:50,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62055866] [2025-03-09 00:38:50,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:50,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:50,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:50,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:50,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:50,576 INFO L87 Difference]: Start difference. First operand 1378 states and 1595 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2025-03-09 00:38:50,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:50,623 INFO L93 Difference]: Finished difference Result 1067 states and 1159 transitions. [2025-03-09 00:38:50,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:38:50,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2025-03-09 00:38:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:50,626 INFO L225 Difference]: With dead ends: 1067 [2025-03-09 00:38:50,626 INFO L226 Difference]: Without dead ends: 1067 [2025-03-09 00:38:50,626 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 [2025-03-09 00:38:50,626 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 56 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:50,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2471 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:38:50,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2025-03-09 00:38:50,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2025-03-09 00:38:50,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 712 states have (on average 1.6165730337078652) internal successors, (1151), 1060 states have internal predecessors, (1151), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1157 transitions. [2025-03-09 00:38:50,634 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1157 transitions. Word has length 52 [2025-03-09 00:38:50,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:50,634 INFO L471 AbstractCegarLoop]: Abstraction has 1065 states and 1157 transitions. [2025-03-09 00:38:50,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2025-03-09 00:38:50,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1157 transitions. [2025-03-09 00:38:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-09 00:38:50,635 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:50,635 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] [2025-03-09 00:38:50,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 00:38:50,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:50,835 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr110ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:50,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:50,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1169743652, now seen corresponding path program 1 times [2025-03-09 00:38:50,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:50,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196682865] [2025-03-09 00:38:50,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:50,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:50,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:50,838 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:50,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 00:38:50,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-09 00:38:50,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-09 00:38:50,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:50,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:50,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:38:50,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:50,972 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:38:50,972 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:38:50,972 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:38:50,974 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 [2025-03-09 00:38:51,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 00:38:51,005 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 [2025-03-09 00:38:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:51,028 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:51,028 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:51,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196682865] [2025-03-09 00:38:51,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196682865] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:51,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:51,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:38:51,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846748086] [2025-03-09 00:38:51,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:51,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 00:38:51,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:51,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 00:38:51,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:38:51,029 INFO L87 Difference]: Start difference. First operand 1065 states and 1157 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2025-03-09 00:38:51,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:51,250 INFO L93 Difference]: Finished difference Result 1536 states and 1649 transitions. [2025-03-09 00:38:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:38:51,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 56 [2025-03-09 00:38:51,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:51,253 INFO L225 Difference]: With dead ends: 1536 [2025-03-09 00:38:51,253 INFO L226 Difference]: Without dead ends: 1533 [2025-03-09 00:38:51,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:38:51,254 INFO L435 NwaCegarLoop]: 1056 mSDtfsCounter, 1227 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:51,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 4209 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 00:38:51,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2025-03-09 00:38:51,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1013. [2025-03-09 00:38:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 660 states have (on average 1.662121212121212) internal successors, (1097), 1008 states have internal predecessors, (1097), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1103 transitions. [2025-03-09 00:38:51,264 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1103 transitions. Word has length 56 [2025-03-09 00:38:51,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:51,264 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1103 transitions. [2025-03-09 00:38:51,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2025-03-09 00:38:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1103 transitions. [2025-03-09 00:38:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-09 00:38:51,264 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:51,264 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] [2025-03-09 00:38:51,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-09 00:38:51,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:51,465 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:51,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:51,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1664732852, now seen corresponding path program 1 times [2025-03-09 00:38:51,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:51,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294153629] [2025-03-09 00:38:51,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:51,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:51,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:51,467 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:51,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 00:38:51,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-09 00:38:51,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-09 00:38:51,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:51,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:51,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:38:51,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:51,647 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 [2025-03-09 00:38:51,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:38:51,950 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 [2025-03-09 00:38:51,961 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:38:51,961 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 [2025-03-09 00:38:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:51,962 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:51,962 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:51,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294153629] [2025-03-09 00:38:51,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294153629] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:51,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:51,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:38:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13200072] [2025-03-09 00:38:51,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:51,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:38:51,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:51,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:38:51,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:38:51,963 INFO L87 Difference]: Start difference. First operand 1013 states and 1103 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-09 00:38:53,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:53,132 INFO L93 Difference]: Finished difference Result 975 states and 1065 transitions. [2025-03-09 00:38:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:38:53,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2025-03-09 00:38:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:53,134 INFO L225 Difference]: With dead ends: 975 [2025-03-09 00:38:53,134 INFO L226 Difference]: Without dead ends: 975 [2025-03-09 00:38:53,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:38:53,135 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 1139 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:53,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 726 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-09 00:38:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2025-03-09 00:38:53,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 938. [2025-03-09 00:38:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 623 states have (on average 1.581059390048154) internal successors, (985), 933 states have internal predecessors, (985), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 991 transitions. [2025-03-09 00:38:53,142 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 991 transitions. Word has length 60 [2025-03-09 00:38:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:53,142 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 991 transitions. [2025-03-09 00:38:53,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-09 00:38:53,142 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 991 transitions. [2025-03-09 00:38:53,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-09 00:38:53,142 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:53,142 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] [2025-03-09 00:38:53,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-09 00:38:53,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:53,343 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:53,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1066944605, now seen corresponding path program 1 times [2025-03-09 00:38:53,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:53,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740889125] [2025-03-09 00:38:53,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:53,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:53,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:53,345 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:53,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 00:38:53,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 00:38:53,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 00:38:53,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:53,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:53,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:38:53,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:53,518 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 [2025-03-09 00:38:53,524 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 [2025-03-09 00:38:53,536 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 [2025-03-09 00:38:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:53,541 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:53,541 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:53,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740889125] [2025-03-09 00:38:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740889125] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:53,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:38:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869394994] [2025-03-09 00:38:53,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:53,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:38:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:53,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:38:53,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:38:53,542 INFO L87 Difference]: Start difference. First operand 938 states and 991 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2025-03-09 00:38:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:54,675 INFO L93 Difference]: Finished difference Result 937 states and 990 transitions. [2025-03-09 00:38:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:38:54,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2025-03-09 00:38:54,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:54,677 INFO L225 Difference]: With dead ends: 937 [2025-03-09 00:38:54,678 INFO L226 Difference]: Without dead ends: 937 [2025-03-09 00:38:54,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:38:54,678 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 2 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:54,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2116 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-09 00:38:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2025-03-09 00:38:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2025-03-09 00:38:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 623 states have (on average 1.579454253611557) internal successors, (984), 932 states have internal predecessors, (984), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 990 transitions. [2025-03-09 00:38:54,685 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 990 transitions. Word has length 65 [2025-03-09 00:38:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:54,685 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 990 transitions. [2025-03-09 00:38:54,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2025-03-09 00:38:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 990 transitions. [2025-03-09 00:38:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-09 00:38:54,685 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:54,685 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] [2025-03-09 00:38:54,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-09 00:38:54,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:54,890 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr422REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:54,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:54,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1066944604, now seen corresponding path program 1 times [2025-03-09 00:38:54,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:54,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3704470] [2025-03-09 00:38:54,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:54,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:54,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:54,893 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:54,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 00:38:55,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 00:38:55,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 00:38:55,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:55,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:55,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:38:55,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:55,068 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 [2025-03-09 00:38:55,080 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 [2025-03-09 00:38:55,083 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 [2025-03-09 00:38:55,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-09 00:38:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:55,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:55,122 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3704470] [2025-03-09 00:38:55,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3704470] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:55,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:55,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:38:55,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933770632] [2025-03-09 00:38:55,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:55,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:38:55,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:55,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:38:55,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:38:55,123 INFO L87 Difference]: Start difference. First operand 937 states and 990 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2025-03-09 00:38:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:56,714 INFO L93 Difference]: Finished difference Result 936 states and 989 transitions. [2025-03-09 00:38:56,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:38:56,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2025-03-09 00:38:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:56,716 INFO L225 Difference]: With dead ends: 936 [2025-03-09 00:38:56,716 INFO L226 Difference]: Without dead ends: 936 [2025-03-09 00:38:56,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:38:56,717 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 1 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:56,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2136 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 00:38:56,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2025-03-09 00:38:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 936. [2025-03-09 00:38:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 622 states have (on average 1.5803858520900322) internal successors, (983), 931 states have internal predecessors, (983), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:38:56,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 989 transitions. [2025-03-09 00:38:56,725 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 989 transitions. Word has length 65 [2025-03-09 00:38:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:56,725 INFO L471 AbstractCegarLoop]: Abstraction has 936 states and 989 transitions. [2025-03-09 00:38:56,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2025-03-09 00:38:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 989 transitions. [2025-03-09 00:38:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-09 00:38:56,725 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:56,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:56,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-09 00:38:56,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:56,926 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:56,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1504995744, now seen corresponding path program 1 times [2025-03-09 00:38:56,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:56,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394072612] [2025-03-09 00:38:56,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:56,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:56,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:56,932 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:56,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-09 00:38:57,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-09 00:38:57,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-09 00:38:57,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:57,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:57,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 00:38:57,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:57,117 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 [2025-03-09 00:38:57,173 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 [2025-03-09 00:38:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:57,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:57,181 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394072612] [2025-03-09 00:38:57,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394072612] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:57,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:57,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:38:57,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021052838] [2025-03-09 00:38:57,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:57,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:38:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:57,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:38:57,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:38:57,182 INFO L87 Difference]: Start difference. First operand 936 states and 989 transitions. Second operand has 7 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-03-09 00:38:58,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:58,521 INFO L93 Difference]: Finished difference Result 948 states and 1004 transitions. [2025-03-09 00:38:58,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:38:58,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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 73 [2025-03-09 00:38:58,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:58,526 INFO L225 Difference]: With dead ends: 948 [2025-03-09 00:38:58,526 INFO L226 Difference]: Without dead ends: 948 [2025-03-09 00:38:58,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-09 00:38:58,527 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 6 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:58,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2977 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-09 00:38:58,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2025-03-09 00:38:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 942. [2025-03-09 00:38:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 627 states have (on average 1.5789473684210527) internal successors, (990), 936 states have internal predecessors, (990), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-09 00:38:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 999 transitions. [2025-03-09 00:38:58,538 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 999 transitions. Word has length 73 [2025-03-09 00:38:58,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:58,538 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 999 transitions. [2025-03-09 00:38:58,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-03-09 00:38:58,539 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 999 transitions. [2025-03-09 00:38:58,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-09 00:38:58,539 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:58,539 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] [2025-03-09 00:38:58,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-09 00:38:58,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:58,740 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:58,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1504995743, now seen corresponding path program 1 times [2025-03-09 00:38:58,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:58,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802012663] [2025-03-09 00:38:58,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:58,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:58,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:58,742 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:58,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-09 00:38:58,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-09 00:38:58,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-09 00:38:58,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:58,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:58,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:38:58,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:58,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:58,930 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:58,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802012663] [2025-03-09 00:38:58,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802012663] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:58,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:58,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:38:58,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233073385] [2025-03-09 00:38:58,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:58,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:38:58,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:58,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:38:58,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:58,931 INFO L87 Difference]: Start difference. First operand 942 states and 999 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2025-03-09 00:38:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:58,952 INFO L93 Difference]: Finished difference Result 939 states and 993 transitions. [2025-03-09 00:38:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:38:58,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 73 [2025-03-09 00:38:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:58,954 INFO L225 Difference]: With dead ends: 939 [2025-03-09 00:38:58,954 INFO L226 Difference]: Without dead ends: 939 [2025-03-09 00:38:58,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:38:58,955 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 0 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2455 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 [2025-03-09 00:38:58,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2455 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:38:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2025-03-09 00:38:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 939. [2025-03-09 00:38:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 624 states have (on average 1.580128205128205) internal successors, (986), 934 states have internal predecessors, (986), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 00:38:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 993 transitions. [2025-03-09 00:38:58,967 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 993 transitions. Word has length 73 [2025-03-09 00:38:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:58,968 INFO L471 AbstractCegarLoop]: Abstraction has 939 states and 993 transitions. [2025-03-09 00:38:58,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2025-03-09 00:38:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 993 transitions. [2025-03-09 00:38:58,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-09 00:38:58,969 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:58,969 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:58,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-09 00:38:59,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:59,169 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:59,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:59,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1473042148, now seen corresponding path program 1 times [2025-03-09 00:38:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:59,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998134279] [2025-03-09 00:38:59,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:59,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:59,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:59,173 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:59,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-09 00:38:59,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-09 00:38:59,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-09 00:38:59,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:59,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:59,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:38:59,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:59,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:38:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:59,419 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:59,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998134279] [2025-03-09 00:38:59,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998134279] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:38:59,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:38:59,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-09 00:38:59,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205244442] [2025-03-09 00:38:59,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:38:59,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:38:59,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:59,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:38:59,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:38:59,420 INFO L87 Difference]: Start difference. First operand 939 states and 993 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2025-03-09 00:38:59,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:59,524 INFO L93 Difference]: Finished difference Result 951 states and 1010 transitions. [2025-03-09 00:38:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:38:59,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 74 [2025-03-09 00:38:59,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:59,529 INFO L225 Difference]: With dead ends: 951 [2025-03-09 00:38:59,529 INFO L226 Difference]: Without dead ends: 951 [2025-03-09 00:38:59,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-09 00:38:59,529 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 5 mSDsluCounter, 4080 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4900 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:59,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4900 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:38:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2025-03-09 00:38:59,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 949. [2025-03-09 00:38:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 633 states have (on average 1.5813586097946288) internal successors, (1001), 943 states have internal predecessors, (1001), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 00:38:59,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1008 transitions. [2025-03-09 00:38:59,545 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1008 transitions. Word has length 74 [2025-03-09 00:38:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:59,545 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1008 transitions. [2025-03-09 00:38:59,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2025-03-09 00:38:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1008 transitions. [2025-03-09 00:38:59,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-09 00:38:59,545 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:59,545 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] [2025-03-09 00:38:59,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-09 00:38:59,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:59,750 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:38:59,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:59,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1393007264, now seen corresponding path program 2 times [2025-03-09 00:38:59,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:59,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878864694] [2025-03-09 00:38:59,751 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:38:59,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:59,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:59,754 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:59,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-09 00:38:59,887 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-03-09 00:39:17,766 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-03-09 00:39:17,766 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:39:17,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:39:17,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:39:17,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:39:17,842 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:39:17,842 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 [2025-03-09 00:39:17,857 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 [2025-03-09 00:39:17,981 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:39:17,981 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 [2025-03-09 00:39:18,007 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 [2025-03-09 00:39:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-09 00:39:18,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:39:18,068 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-09 00:39:18,069 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 [2025-03-09 00:39:18,074 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1361 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1361) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2025-03-09 00:39:18,075 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:39:18,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878864694] [2025-03-09 00:39:18,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878864694] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:39:18,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1168238153] [2025-03-09 00:39:18,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:39:18,076 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-09 00:39:18,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-09 00:39:18,077 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-09 00:39:18,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2025-03-09 00:39:18,259 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-03-09 00:39:19,013 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-03-09 00:39:19,013 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:39:19,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:39:19,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:39:19,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:39:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:39:19,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:39:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:39:19,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1168238153] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:39:19,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:39:19,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-09 00:39:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699395836] [2025-03-09 00:39:19,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:39:19,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 00:39:19,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:39:19,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 00:39:19,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-03-09 00:39:19,266 INFO L87 Difference]: Start difference. First operand 949 states and 1008 transitions. Second operand has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 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) [2025-03-09 00:39:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:39:24,374 INFO L93 Difference]: Finished difference Result 965 states and 1031 transitions. [2025-03-09 00:39:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-09 00:39:24,374 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 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 77 [2025-03-09 00:39:24,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:39:24,376 INFO L225 Difference]: With dead ends: 965 [2025-03-09 00:39:24,376 INFO L226 Difference]: Without dead ends: 961 [2025-03-09 00:39:24,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2025-03-09 00:39:24,377 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 609 mSDsluCounter, 8224 mSDsCounter, 0 mSdLazyCounter, 5661 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 8766 SdHoareTripleChecker+Invalid, 5678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 5661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:39:24,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 8766 Invalid, 5678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 5661 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2025-03-09 00:39:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2025-03-09 00:39:24,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 957. [2025-03-09 00:39:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 642 states have (on average 1.5763239875389408) internal successors, (1012), 951 states have internal predecessors, (1012), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 00:39:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1019 transitions. [2025-03-09 00:39:24,386 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1019 transitions. Word has length 77 [2025-03-09 00:39:24,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:39:24,386 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1019 transitions. [2025-03-09 00:39:24,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 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) [2025-03-09 00:39:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1019 transitions. [2025-03-09 00:39:24,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-09 00:39:24,387 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:39:24,387 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] [2025-03-09 00:39:24,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-09 00:39:24,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2025-03-09 00:39:24,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-09 00:39:24,787 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:39:24,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:39:24,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1904774113, now seen corresponding path program 1 times [2025-03-09 00:39:24,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:39:24,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095619951] [2025-03-09 00:39:24,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:39:24,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:39:24,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:39:24,790 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:39:24,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-09 00:39:24,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-09 00:39:25,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-09 00:39:25,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:39:25,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:39:25,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 00:39:25,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:39:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:39:25,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:39:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:39:25,465 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:39:25,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095619951] [2025-03-09 00:39:25,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095619951] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:39:25,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:39:25,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-09 00:39:25,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955504117] [2025-03-09 00:39:25,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:39:25,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-09 00:39:25,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:39:25,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-09 00:39:25,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-09 00:39:25,467 INFO L87 Difference]: Start difference. First operand 957 states and 1019 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 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) [2025-03-09 00:39:26,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:39:26,491 INFO L93 Difference]: Finished difference Result 981 states and 1058 transitions. [2025-03-09 00:39:26,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-09 00:39:26,492 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 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 83 [2025-03-09 00:39:26,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:39:26,496 INFO L225 Difference]: With dead ends: 981 [2025-03-09 00:39:26,496 INFO L226 Difference]: Without dead ends: 975 [2025-03-09 00:39:26,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-09 00:39:26,498 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 15 mSDsluCounter, 10616 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11436 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:39:26,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 11436 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-09 00:39:26,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2025-03-09 00:39:26,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 975. [2025-03-09 00:39:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 660 states have (on average 1.5681818181818181) internal successors, (1035), 969 states have internal predecessors, (1035), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 00:39:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1042 transitions. [2025-03-09 00:39:26,509 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1042 transitions. Word has length 83 [2025-03-09 00:39:26,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:39:26,509 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1042 transitions. [2025-03-09 00:39:26,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 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) [2025-03-09 00:39:26,509 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1042 transitions. [2025-03-09 00:39:26,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-09 00:39:26,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:39:26,509 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] [2025-03-09 00:39:26,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-09 00:39:26,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:39:26,714 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:39:26,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:39:26,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1259092193, now seen corresponding path program 2 times [2025-03-09 00:39:26,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:39:26,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103845975] [2025-03-09 00:39:26,715 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:39:26,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:39:26,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:39:26,716 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:39:26,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-09 00:39:26,874 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-09 00:39:53,932 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-09 00:39:53,932 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:39:53,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:39:53,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-09 00:39:53,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:39:54,010 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 [2025-03-09 00:39:54,019 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:39:54,019 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 [2025-03-09 00:39:54,035 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 [2025-03-09 00:39:54,044 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 [2025-03-09 00:39:54,108 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 [2025-03-09 00:39:54,111 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 [2025-03-09 00:39:54,436 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:39:54,436 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 [2025-03-09 00:39:54,446 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 [2025-03-09 00:39:54,475 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 [2025-03-09 00:39:54,479 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 [2025-03-09 00:39:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-09 00:39:54,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:39:54,800 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1988 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1987 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1987) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1988) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1987 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1987) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2025-03-09 00:39:54,805 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:39:54,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103845975] [2025-03-09 00:39:54,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103845975] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:39:54,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [103842796] [2025-03-09 00:39:54,805 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:39:54,805 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-09 00:39:54,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-09 00:39:54,807 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-09 00:39:54,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2025-03-09 00:39:55,039 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-09 00:39:55,951 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-09 00:39:55,952 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:39:55,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:39:55,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-09 00:39:55,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:39:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:39:56,547 INFO L312 TraceCheckSpWp]: Computing backward predicates...