./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.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_2b.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 1b7166d94206693c3f254a3c1de8d5825f8510fb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:21:14,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 22:21:14,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 22:21:15,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 22:21:15,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 22:21:15,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 22:21:15,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 22:21:15,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 22:21:15,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 22:21:15,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 22:21:15,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 22:21:15,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 22:21:15,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 22:21:15,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 22:21:15,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 22:21:15,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 22:21:15,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 22:21:15,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 22:21:15,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 22:21:15,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 22:21:15,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 22:21:15,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 22:21:15,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 22:21:15,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 22:21:15,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 22:21:15,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 22:21:15,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 22:21:15,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 22:21:15,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 22:21:15,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 22:21:15,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 22:21:15,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 22:21:15,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 22:21:15,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 22:21:15,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 22:21:15,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 22:21:15,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 22:21:15,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 22:21:15,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 22:21:15,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 22:21:15,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 22:21:15,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-16 22:21:15,138 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 22:21:15,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 22:21:15,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 22:21:15,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 22:21:15,146 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 22:21:15,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 22:21:15,146 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-16 22:21:15,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 22:21:15,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 22:21:15,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 22:21:15,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 22:21:15,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 22:21:15,148 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-16 22:21:15,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 22:21:15,149 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 22:21:15,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 22:21:15,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 22:21:15,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 22:21:15,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 22:21:15,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 22:21:15,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 22:21:15,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 22:21:15,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 22:21:15,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 22:21:15,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 22:21:15,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 22:21:15,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 22:21:15,154 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 -> 1b7166d94206693c3f254a3c1de8d5825f8510fb [2019-11-16 22:21:15,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 22:21:15,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 22:21:15,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 22:21:15,675 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 22:21:15,677 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 22:21:15,678 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2019-11-16 22:21:15,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d7e922c7/f2659121246c46c690d543a8b65a2977/FLAGa9f0cc034 [2019-11-16 22:21:16,512 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 22:21:16,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2019-11-16 22:21:16,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d7e922c7/f2659121246c46c690d543a8b65a2977/FLAGa9f0cc034 [2019-11-16 22:21:16,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d7e922c7/f2659121246c46c690d543a8b65a2977 [2019-11-16 22:21:16,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 22:21:16,862 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2019-11-16 22:21:16,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 22:21:16,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 22:21:16,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 22:21:16,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:21:16" (1/1) ... [2019-11-16 22:21:16,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d10aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:16, skipping insertion in model container [2019-11-16 22:21:16,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:21:16" (1/1) ... [2019-11-16 22:21:16,889 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 22:21:16,907 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 22:21:17,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 22:21:17,164 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 22:21:17,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 22:21:17,194 INFO L192 MainTranslator]: Completed translation [2019-11-16 22:21:17,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:17 WrapperNode [2019-11-16 22:21:17,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 22:21:17,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 22:21:17,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 22:21:17,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 22:21:17,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:17" (1/1) ... [2019-11-16 22:21:17,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:17" (1/1) ... [2019-11-16 22:21:17,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 22:21:17,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 22:21:17,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 22:21:17,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 22:21:17,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:17" (1/1) ... [2019-11-16 22:21:17,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:17" (1/1) ... [2019-11-16 22:21:17,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:17" (1/1) ... [2019-11-16 22:21:17,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:17" (1/1) ... [2019-11-16 22:21:17,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:17" (1/1) ... [2019-11-16 22:21:17,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:17" (1/1) ... [2019-11-16 22:21:17,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:21:17" (1/1) ... [2019-11-16 22:21:17,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 22:21:17,343 INFO L168 Benchmark]: Toolchain (without parser) took 465.75 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 966.0 MB in the beginning and 991.3 MB in the end (delta: -25.4 MB). There was no memory consumed. Max. memory is 12.5 GB. [2019-11-16 22:21:17,345 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 994.6 MB. There was no memory consumed. Max. memory is 12.5 GB. [2019-11-16 22:21:17,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.28 ms. Allocated memory is still 1.0 GB. Free memory was 966.0 MB in the beginning and 954.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 12.5 GB. [2019-11-16 22:21:17,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.90 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 954.4 MB in the beginning and 997.1 MB in the end (delta: -42.7 MB). Peak memory consumption was 9.1 MB. Max. memory is 12.5 GB. [2019-11-16 22:21:17,352 INFO L168 Benchmark]: Boogie Preprocessor took 28.20 ms. Allocated memory is still 1.0 GB. Free memory was 997.1 MB in the beginning and 991.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 12.5 GB. [2019-11-16 22:21:17,358 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 994.6 MB. There was no memory consumed. Max. memory is 12.5 GB. * CACSL2BoogieTranslator took 334.28 ms. Allocated memory is still 1.0 GB. Free memory was 966.0 MB in the beginning and 954.4 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 99.90 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 954.4 MB in the beginning and 997.1 MB in the end (delta: -42.7 MB). Peak memory consumption was 9.1 MB. Max. memory is 12.5 GB. * Boogie Preprocessor took 28.20 ms. Allocated memory is still 1.0 GB. Free memory was 997.1 MB in the beginning and 991.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 12.5 GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...