./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/underapprox_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 025d5a27 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_2-1.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 452a4ddc5d154328a041fd76cdcbb5b63a51957d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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_2-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 452a4ddc5d154328a041fd76cdcbb5b63a51957d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.24-025d5a2 [2019-11-26 17:03:48,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 17:03:48,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 17:03:48,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 17:03:48,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 17:03:48,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 17:03:48,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 17:03:48,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 17:03:48,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 17:03:48,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 17:03:48,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 17:03:48,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 17:03:48,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 17:03:48,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 17:03:48,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 17:03:48,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 17:03:48,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 17:03:48,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 17:03:48,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 17:03:48,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 17:03:48,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 17:03:48,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 17:03:48,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 17:03:48,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 17:03:48,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 17:03:48,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 17:03:48,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 17:03:48,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 17:03:48,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 17:03:48,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 17:03:48,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 17:03:48,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 17:03:48,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 17:03:48,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 17:03:48,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 17:03:48,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 17:03:48,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 17:03:48,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 17:03:48,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 17:03:48,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 17:03:48,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 17:03:48,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-26 17:03:48,766 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 17:03:48,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 17:03:48,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 17:03:48,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 17:03:48,774 INFO L138 SettingsManager]: * Use SBE=true [2019-11-26 17:03:48,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 17:03:48,775 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 17:03:48,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 17:03:48,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 17:03:48,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 17:03:48,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 17:03:48,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 17:03:48,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 17:03:48,782 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 17:03:48,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 17:03:48,783 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 17:03:48,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 17:03:48,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 17:03:48,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 17:03:48,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 17:03:48,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 17:03:48,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 17:03:48,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 17:03:48,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 17:03:48,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 17:03:48,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-26 17:03:48,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 17:03:48,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 17:03:48,791 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 -> 452a4ddc5d154328a041fd76cdcbb5b63a51957d [2019-11-26 17:03:49,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 17:03:49,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 17:03:49,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 17:03:49,433 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 17:03:49,435 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 17:03:49,438 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/underapprox_2-1.c [2019-11-26 17:03:49,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002f9b7c1/af4abbc4eda3437abfce4734a5cfa55e/FLAGddb6cca60 [2019-11-26 17:03:50,560 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 17:03:50,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/underapprox_2-1.c [2019-11-26 17:03:50,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002f9b7c1/af4abbc4eda3437abfce4734a5cfa55e/FLAGddb6cca60 [2019-11-26 17:03:50,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002f9b7c1/af4abbc4eda3437abfce4734a5cfa55e [2019-11-26 17:03:50,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 17:03:50,766 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2019-11-26 17:03:50,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 17:03:50,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 17:03:50,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 17:03:50,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 05:03:50" (1/1) ... [2019-11-26 17:03:50,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a98191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:50, skipping insertion in model container [2019-11-26 17:03:50,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 05:03:50" (1/1) ... [2019-11-26 17:03:50,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 17:03:50,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-26 17:03:51,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 17:03:51,293 INFO L203 MainTranslator]: Completed pre-run [2019-11-26 17:03:51,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 17:03:51,346 INFO L208 MainTranslator]: Completed translation [2019-11-26 17:03:51,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:51 WrapperNode [2019-11-26 17:03:51,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 17:03:51,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 17:03:51,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 17:03:51,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 17:03:51,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:51" (1/1) ... [2019-11-26 17:03:51,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:51" (1/1) ... [2019-11-26 17:03:51,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 17:03:51,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 17:03:51,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 17:03:51,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 17:03:51,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:51" (1/1) ... [2019-11-26 17:03:51,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:51" (1/1) ... [2019-11-26 17:03:51,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:51" (1/1) ... [2019-11-26 17:03:51,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:51" (1/1) ... [2019-11-26 17:03:51,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:51" (1/1) ... [2019-11-26 17:03:51,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:51" (1/1) ... [2019-11-26 17:03:51,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:51" (1/1) ... [2019-11-26 17:03:51,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 17:03:51,575 INFO L168 Benchmark]: Toolchain (without parser) took 791.55 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 960.2 MB in the beginning and 997.0 MB in the end (delta: -36.8 MB). There was no memory consumed. Max. memory is 12.5 GB. [2019-11-26 17:03:51,580 INFO L168 Benchmark]: CDTParser took 1.75 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. [2019-11-26 17:03:51,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.28 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 12.5 GB. [2019-11-26 17:03:51,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 165.81 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 948.6 MB in the beginning and 997.0 MB in the end (delta: -48.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 12.5 GB. [2019-11-26 17:03:51,590 INFO L168 Benchmark]: Boogie Preprocessor took 33.69 ms. Allocated memory is still 1.0 GB. Free memory is still 997.0 MB. There was no memory consumed. Max. memory is 12.5 GB. [2019-11-26 17:03:51,602 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.75 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 577.28 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.6 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 165.81 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 948.6 MB in the beginning and 997.0 MB in the end (delta: -48.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 12.5 GB. * Boogie Preprocessor took 33.69 ms. Allocated memory is still 1.0 GB. Free memory is still 997.0 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... ### Bit-precise run ### This is Ultimate 0.1.24-025d5a2 [2019-11-26 17:03:55,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 17:03:55,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 17:03:55,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 17:03:55,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 17:03:55,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 17:03:55,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 17:03:55,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 17:03:55,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 17:03:55,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 17:03:55,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 17:03:55,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 17:03:55,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 17:03:55,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 17:03:55,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 17:03:55,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 17:03:55,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 17:03:55,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 17:03:55,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 17:03:55,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 17:03:55,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 17:03:55,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 17:03:55,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 17:03:55,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 17:03:55,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 17:03:55,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 17:03:55,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 17:03:55,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 17:03:55,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 17:03:55,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 17:03:55,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 17:03:55,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 17:03:55,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 17:03:55,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 17:03:55,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 17:03:55,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 17:03:55,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 17:03:55,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 17:03:55,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 17:03:55,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 17:03:55,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 17:03:55,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-26 17:03:55,791 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 17:03:55,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 17:03:55,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 17:03:55,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 17:03:55,806 INFO L138 SettingsManager]: * Use SBE=true [2019-11-26 17:03:55,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 17:03:55,807 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 17:03:55,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 17:03:55,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 17:03:55,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 17:03:55,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 17:03:55,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 17:03:55,809 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 17:03:55,813 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 17:03:55,813 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 17:03:55,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 17:03:55,814 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 17:03:55,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 17:03:55,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 17:03:55,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 17:03:55,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 17:03:55,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 17:03:55,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 17:03:55,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 17:03:55,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 17:03:55,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 17:03:55,823 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-26 17:03:55,823 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 17:03:55,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 17:03:55,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 17:03:55,826 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 452a4ddc5d154328a041fd76cdcbb5b63a51957d [2019-11-26 17:03:56,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 17:03:56,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 17:03:56,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 17:03:56,430 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 17:03:56,433 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 17:03:56,435 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/underapprox_2-1.c [2019-11-26 17:03:56,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2fc9db1/358cc89603ed4008aa7e4c69c46e5c04/FLAG9b50c3213 [2019-11-26 17:03:57,583 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 17:03:57,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/underapprox_2-1.c [2019-11-26 17:03:57,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2fc9db1/358cc89603ed4008aa7e4c69c46e5c04/FLAG9b50c3213 [2019-11-26 17:03:57,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2fc9db1/358cc89603ed4008aa7e4c69c46e5c04 [2019-11-26 17:03:57,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 17:03:57,787 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2019-11-26 17:03:57,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 17:03:57,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 17:03:57,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 17:03:57,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 05:03:57" (1/1) ... [2019-11-26 17:03:57,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216a4388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:57, skipping insertion in model container [2019-11-26 17:03:57,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 05:03:57" (1/1) ... [2019-11-26 17:03:57,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 17:03:57,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-26 17:03:58,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 17:03:58,325 INFO L203 MainTranslator]: Completed pre-run [2019-11-26 17:03:58,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 17:03:58,398 INFO L208 MainTranslator]: Completed translation [2019-11-26 17:03:58,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:58 WrapperNode [2019-11-26 17:03:58,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 17:03:58,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 17:03:58,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 17:03:58,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 17:03:58,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:58" (1/1) ... [2019-11-26 17:03:58,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:58" (1/1) ... [2019-11-26 17:03:58,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 17:03:58,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 17:03:58,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 17:03:58,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 17:03:58,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:58" (1/1) ... [2019-11-26 17:03:58,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:58" (1/1) ... [2019-11-26 17:03:58,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:58" (1/1) ... [2019-11-26 17:03:58,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:58" (1/1) ... [2019-11-26 17:03:58,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:58" (1/1) ... [2019-11-26 17:03:58,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:58" (1/1) ... [2019-11-26 17:03:58,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 05:03:58" (1/1) ... [2019-11-26 17:03:58,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 17:03:58,634 INFO L168 Benchmark]: Toolchain (without parser) took 842.05 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 958.8 MB in the beginning and 997.1 MB in the end (delta: -38.2 MB). There was no memory consumed. Max. memory is 12.5 GB. [2019-11-26 17:03:58,636 INFO L168 Benchmark]: CDTParser took 0.41 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. [2019-11-26 17:03:58,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.31 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 947.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 12.5 GB. [2019-11-26 17:03:58,641 INFO L168 Benchmark]: Boogie Procedure Inliner took 178.75 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 947.4 MB in the beginning and 997.1 MB in the end (delta: -49.7 MB). Peak memory consumption was 9.1 MB. Max. memory is 12.5 GB. [2019-11-26 17:03:58,643 INFO L168 Benchmark]: Boogie Preprocessor took 46.60 ms. Allocated memory is still 1.0 GB. Free memory is still 997.1 MB. There was no memory consumed. Max. memory is 12.5 GB. [2019-11-26 17:03:58,659 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 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 607.31 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 947.4 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 178.75 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 947.4 MB in the beginning and 997.1 MB in the end (delta: -49.7 MB). Peak memory consumption was 9.1 MB. Max. memory is 12.5 GB. * Boogie Preprocessor took 46.60 ms. Allocated memory is still 1.0 GB. Free memory is still 997.1 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...