./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/underapprox_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/loop-acceleration/underapprox_1-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6cd948af0e0b6c8603db03ff6e3dfbac759cb557 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 21:21:21,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 21:21:21,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 21:21:21,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 21:21:21,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 21:21:21,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 21:21:21,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 21:21:21,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 21:21:21,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 21:21:21,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 21:21:21,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 21:21:21,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 21:21:21,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 21:21:21,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 21:21:21,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 21:21:21,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 21:21:21,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 21:21:21,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 21:21:21,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 21:21:21,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 21:21:21,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 21:21:21,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 21:21:21,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 21:21:21,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 21:21:21,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 21:21:21,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 21:21:21,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 21:21:21,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 21:21:21,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 21:21:21,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 21:21:21,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 21:21:21,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 21:21:21,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 21:21:21,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 21:21:21,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 21:21:21,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 21:21:21,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 21:21:21,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 21:21:21,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 21:21:21,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 21:21:21,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 21:21:21,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 21:21:21,424 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 21:21:21,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 21:21:21,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 21:21:21,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 21:21:21,429 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 21:21:21,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 21:21:21,433 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 21:21:21,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 21:21:21,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 21:21:21,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 21:21:21,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 21:21:21,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 21:21:21,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 21:21:21,437 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 21:21:21,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 21:21:21,437 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 21:21:21,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 21:21:21,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 21:21:21,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 21:21:21,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 21:21:21,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 21:21:21,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 21:21:21,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 21:21:21,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 21:21:21,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 21:21:21,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 21:21:21,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 21:21:21,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 21:21:21,446 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 ! call(__VERIFIER_error())) ) 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 -> 6cd948af0e0b6c8603db03ff6e3dfbac759cb557 [2019-11-16 21:21:22,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 21:21:22,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 21:21:22,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 21:21:22,100 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 21:21:22,104 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 21:21:22,106 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/underapprox_1-2.c [2019-11-16 21:21:22,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088aeb286/0f690bf67dfb4fccb53e9e939bf40dc6/FLAG558c918ad [2019-11-16 21:21:23,333 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 21:21:23,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/underapprox_1-2.c [2019-11-16 21:21:23,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088aeb286/0f690bf67dfb4fccb53e9e939bf40dc6/FLAG558c918ad [2019-11-16 21:21:23,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088aeb286/0f690bf67dfb4fccb53e9e939bf40dc6 [2019-11-16 21:21:23,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 21:21:23,416 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2019-11-16 21:21:23,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 21:21:23,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 21:21:23,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 21:21:23,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:21:23" (1/1) ... [2019-11-16 21:21:23,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67bf8991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:21:23, skipping insertion in model container [2019-11-16 21:21:23,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:21:23" (1/1) ... [2019-11-16 21:21:23,463 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 21:21:23,505 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 21:21:23,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 21:21:23,901 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 21:21:23,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 21:21:23,976 INFO L192 MainTranslator]: Completed translation [2019-11-16 21:21:23,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:21:23 WrapperNode [2019-11-16 21:21:23,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 21:21:23,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 21:21:23,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 21:21:23,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 21:21:24,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:21:23" (1/1) ... [2019-11-16 21:21:24,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:21:23" (1/1) ... [2019-11-16 21:21:24,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 21:21:24,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 21:21:24,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 21:21:24,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 21:21:24,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:21:23" (1/1) ... [2019-11-16 21:21:24,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:21:23" (1/1) ... [2019-11-16 21:21:24,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:21:23" (1/1) ... [2019-11-16 21:21:24,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:21:23" (1/1) ... [2019-11-16 21:21:24,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:21:23" (1/1) ... [2019-11-16 21:21:24,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:21:23" (1/1) ... [2019-11-16 21:21:24,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:21:23" (1/1) ... [2019-11-16 21:21:24,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 21:21:24,220 INFO L168 Benchmark]: Toolchain (without parser) took 797.02 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 991.1 MB in the end (delta: -29.4 MB). There was no memory consumed. Max. memory is 12.5 GB. [2019-11-16 21:21:24,223 INFO L168 Benchmark]: CDTParser took 0.38 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 21:21:24,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 560.30 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 12.5 GB. [2019-11-16 21:21:24,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 170.44 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 996.8 MB in the end (delta: -46.6 MB). Peak memory consumption was 9.3 MB. Max. memory is 12.5 GB. [2019-11-16 21:21:24,233 INFO L168 Benchmark]: Boogie Preprocessor took 57.47 ms. Allocated memory is still 1.0 GB. Free memory was 996.8 MB in the beginning and 991.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 12.5 GB. [2019-11-16 21:21:24,246 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 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 560.30 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 12.5 GB. * Boogie Procedure Inliner took 170.44 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 996.8 MB in the end (delta: -46.6 MB). Peak memory consumption was 9.3 MB. Max. memory is 12.5 GB. * Boogie Preprocessor took 57.47 ms. Allocated memory is still 1.0 GB. Free memory was 996.8 MB in the beginning and 991.1 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...