./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c6eb4584 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 37ca313e0a5caeb18e76088a0c810f3d29920c7c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.24-c6eb458-m [2019-11-16 22:21:12,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 22:21:12,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 22:21:12,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 22:21:12,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 22:21:12,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 22:21:12,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 22:21:12,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 22:21:12,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 22:21:12,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 22:21:12,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 22:21:12,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 22:21:12,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 22:21:12,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 22:21:12,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 22:21:12,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 22:21:12,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 22:21:12,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 22:21:12,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 22:21:12,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 22:21:12,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 22:21:12,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 22:21:12,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 22:21:12,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 22:21:12,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 22:21:12,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 22:21:12,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 22:21:12,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 22:21:12,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 22:21:12,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 22:21:12,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 22:21:12,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 22:21:12,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 22:21:12,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 22:21:12,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 22:21:12,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 22:21:12,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 22:21:12,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 22:21:12,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 22:21:12,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 22:21:12,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 22:21:12,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-16 22:21:12,640 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 22:21:12,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 22:21:12,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 22:21:12,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 22:21:12,647 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 22:21:12,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 22:21:12,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-16 22:21:12,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 22:21:12,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 22:21:12,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 22:21:12,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 22:21:12,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 22:21:12,652 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-16 22:21:12,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 22:21:12,655 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 22:21:12,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 22:21:12,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 22:21:12,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 22:21:12,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 22:21:12,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 22:21:12,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 22:21:12,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 22:21:12,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 22:21:12,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 22:21:12,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 22:21:12,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 22:21:12,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 22:21:12,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.graphml 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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37ca313e0a5caeb18e76088a0c810f3d29920c7c [2019-11-16 22:21:13,312 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 22:21:13,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 22:21:13,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 22:21:13,356 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 22:21:13,358 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 22:21:13,359 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-1.c [2019-11-16 22:21:13,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53e81f35d/b7b7e4bd363e497a8b89a0ac03a94f33/FLAG7bee1a24f [2019-11-16 22:21:14,570 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 22:21:14,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1a-1.c [2019-11-16 22:21:14,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53e81f35d/b7b7e4bd363e497a8b89a0ac03a94f33/FLAG7bee1a24f [2019-11-16 22:21:14,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53e81f35d/b7b7e4bd363e497a8b89a0ac03a94f33 [2019-11-16 22:21:14,642 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 22:21:14,645 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2019-11-16 22:21:14,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 22:21:14,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 22:21:14,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 22:21:14,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:21:14" (1/1) ... [2019-11-16 22:21:14,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115b4fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:14, skipping insertion in model container [2019-11-16 22:21:14,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:21:14" (1/1) ... [2019-11-16 22:21:14,691 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 22:21:14,736 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 22:21:15,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 22:21:15,136 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 22:21:15,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 22:21:15,228 INFO L192 MainTranslator]: Completed translation [2019-11-16 22:21:15,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:15 WrapperNode [2019-11-16 22:21:15,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 22:21:15,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 22:21:15,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 22:21:15,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 22:21:15,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:15" (1/1) ... [2019-11-16 22:21:15,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:15" (1/1) ... [2019-11-16 22:21:15,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 22:21:15,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 22:21:15,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 22:21:15,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 22:21:15,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:15" (1/1) ... [2019-11-16 22:21:15,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:15" (1/1) ... [2019-11-16 22:21:15,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:15" (1/1) ... [2019-11-16 22:21:15,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:15" (1/1) ... [2019-11-16 22:21:15,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:15" (1/1) ... [2019-11-16 22:21:15,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:15" (1/1) ... [2019-11-16 22:21:15,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:15" (1/1) ... [2019-11-16 22:21:15,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 22:21:15,466 INFO L168 Benchmark]: Toolchain (without parser) took 803.50 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 961.7 MB in the beginning and 991.3 MB in the end (delta: -29.6 MB). There was no memory consumed. Max. memory is 12.5 GB. [2019-11-16 22:21:15,470 INFO L168 Benchmark]: CDTParser took 1.95 ms. Allocated memory is still 1.0 GB. Free memory is still 988.9 MB. There was no memory consumed. Max. memory is 12.5 GB. [2019-11-16 22:21:15,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.52 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 12.5 GB. [2019-11-16 22:21:15,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 159.65 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.1 MB in the beginning and 991.3 MB in the end (delta: -41.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 12.5 GB. [2019-11-16 22:21:15,482 INFO L168 Benchmark]: Boogie Preprocessor took 49.83 ms. Allocated memory is still 1.0 GB. Free memory is still 991.3 MB. There was no memory consumed. Max. memory is 12.5 GB. [2019-11-16 22:21:15,497 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.95 ms. Allocated memory is still 1.0 GB. Free memory is still 988.9 MB. There was no memory consumed. Max. memory is 12.5 GB. * CACSL2BoogieTranslator took 584.52 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 12.5 GB. * Boogie Procedure Inliner took 159.65 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.1 MB in the beginning and 991.3 MB in the end (delta: -41.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 12.5 GB. * Boogie Preprocessor took 49.83 ms. Allocated memory is still 1.0 GB. Free memory is still 991.3 MB. There was no memory consumed. Max. memory is 12.5 GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...