./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/sum_20x0-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c 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/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/sum_20x0-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 17db2a72807ac377d533a347dbb668103ea580a0 ..................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 21:17:19,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 21:17:19,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 21:17:19,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 21:17:19,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 21:17:19,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 21:17:19,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 21:17:19,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 21:17:19,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 21:17:19,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 21:17:19,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 21:17:19,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 21:17:19,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 21:17:19,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 21:17:19,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 21:17:19,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 21:17:19,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 21:17:19,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 21:17:19,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 21:17:19,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 21:17:19,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 21:17:20,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 21:17:20,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 21:17:20,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 21:17:20,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 21:17:20,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 21:17:20,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 21:17:20,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 21:17:20,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 21:17:20,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 21:17:20,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 21:17:20,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 21:17:20,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 21:17:20,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 21:17:20,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 21:17:20,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 21:17:20,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 21:17:20,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 21:17:20,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 21:17:20,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 21:17:20,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 21:17:20,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 21:17:20,039 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 21:17:20,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 21:17:20,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 21:17:20,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 21:17:20,044 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 21:17:20,044 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 21:17:20,044 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 21:17:20,044 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 21:17:20,045 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 21:17:20,045 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 21:17:20,045 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 21:17:20,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 21:17:20,046 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 21:17:20,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 21:17:20,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 21:17:20,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 21:17:20,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 21:17:20,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 21:17:20,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 21:17:20,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 21:17:20,047 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 21:17:20,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 21:17:20,048 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 21:17:20,048 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 21:17:20,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 21:17:20,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 21:17:20,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 21:17:20,049 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 21:17:20,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 21:17:20,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 21:17:20,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 21:17:20,050 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 21:17:20,051 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 21:17:20,051 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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(F end) ) 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 -> 17db2a72807ac377d533a347dbb668103ea580a0 [2019-11-28 21:17:20,364 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 21:17:20,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 21:17:20,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 21:17:20,382 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 21:17:20,382 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 21:17:20,383 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_20x0-1.c [2019-11-28 21:17:20,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c225148e/7bec2b79e9cf4586a5fa0b715092f711/FLAG203950fab [2019-11-28 21:17:20,944 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 21:17:20,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_20x0-1.c [2019-11-28 21:17:20,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c225148e/7bec2b79e9cf4586a5fa0b715092f711/FLAG203950fab [2019-11-28 21:17:21,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c225148e/7bec2b79e9cf4586a5fa0b715092f711 [2019-11-28 21:17:21,340 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 21:17:21,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 21:17:21,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 21:17:21,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 21:17:21,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 21:17:21,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:17:21" (1/1) ... [2019-11-28 21:17:21,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1544dcae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21, skipping insertion in model container [2019-11-28 21:17:21,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:17:21" (1/1) ... [2019-11-28 21:17:21,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 21:17:21,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 21:17:21,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:17:21,600 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 21:17:21,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:17:21,630 INFO L208 MainTranslator]: Completed translation [2019-11-28 21:17:21,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21 WrapperNode [2019-11-28 21:17:21,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 21:17:21,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 21:17:21,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 21:17:21,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 21:17:21,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21" (1/1) ... [2019-11-28 21:17:21,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21" (1/1) ... [2019-11-28 21:17:21,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 21:17:21,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 21:17:21,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 21:17:21,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 21:17:21,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21" (1/1) ... [2019-11-28 21:17:21,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21" (1/1) ... [2019-11-28 21:17:21,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21" (1/1) ... [2019-11-28 21:17:21,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21" (1/1) ... [2019-11-28 21:17:21,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21" (1/1) ... [2019-11-28 21:17:21,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21" (1/1) ... [2019-11-28 21:17:21,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21" (1/1) ... [2019-11-28 21:17:21,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 21:17:21,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 21:17:21,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 21:17:21,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 21:17:21,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:17:21,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 21:17:21,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 21:17:21,798 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-11-28 21:17:21,798 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-11-28 21:17:21,944 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 21:17:21,944 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 21:17:21,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:17:21 BoogieIcfgContainer [2019-11-28 21:17:21,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 21:17:21,946 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 21:17:21,946 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 21:17:21,949 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 21:17:21,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:17:21,951 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 09:17:21" (1/3) ... [2019-11-28 21:17:21,952 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@62056dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:17:21, skipping insertion in model container [2019-11-28 21:17:21,952 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:17:21,952 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:17:21" (2/3) ... [2019-11-28 21:17:21,953 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@62056dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:17:21, skipping insertion in model container [2019-11-28 21:17:21,953 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:17:21,954 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:17:21" (3/3) ... [2019-11-28 21:17:21,956 INFO L371 chiAutomizerObserver]: Analyzing ICFG sum_20x0-1.c [2019-11-28 21:17:22,026 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 21:17:22,027 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 21:17:22,027 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 21:17:22,027 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 21:17:22,027 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 21:17:22,027 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 21:17:22,027 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 21:17:22,027 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 21:17:22,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-28 21:17:22,067 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 21:17:22,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:17:22,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:17:22,076 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 21:17:22,076 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:17:22,077 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 21:17:22,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-28 21:17:22,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 21:17:22,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:17:22,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:17:22,080 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 21:17:22,080 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:17:22,088 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~ret1, main_~a~0, main_~b~0, main_~result~0;main_~a~0 := 20;main_~b~0 := 0; 15#L14true call main_#t~ret1 := sum(main_~a~0, main_~b~0);< 8#sumENTRYtrue [2019-11-28 21:17:22,089 INFO L796 eck$LassoCheckResult]: Loop: 8#sumENTRYtrue ~n := #in~n;~m := #in~m; 6#L4true assume !(~n <= 0); 7#L7true call #t~ret0 := sum(~n - 1, 1 + ~m);< 8#sumENTRYtrue [2019-11-28 21:17:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:17:22,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1014, now seen corresponding path program 1 times [2019-11-28 21:17:22,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:17:22,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102888912] [2019-11-28 21:17:22,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:17:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:17:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:17:22,194 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:17:22,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:17:22,195 INFO L82 PathProgramCache]: Analyzing trace with hash 43827, now seen corresponding path program 1 times [2019-11-28 21:17:22,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:17:22,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514925160] [2019-11-28 21:17:22,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:17:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:17:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:17:22,210 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:17:22,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:17:22,215 INFO L82 PathProgramCache]: Analyzing trace with hash 30222110, now seen corresponding path program 1 times [2019-11-28 21:17:22,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:17:22,216 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662402231] [2019-11-28 21:17:22,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:17:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:17:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:17:22,236 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:17:22,424 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:17:22,424 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:17:22,425 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:17:22,425 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:17:22,425 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 21:17:22,425 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:17:22,425 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:17:22,426 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:17:22,426 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_20x0-1.c_Iteration1_Loop [2019-11-28 21:17:22,426 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:17:22,426 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:17:22,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,557 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:17:22,558 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:17:22,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:17:22,575 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:17:22,585 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:17:22,586 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {sum_#res=0} Honda state: {sum_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:17:22,600 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:17:22,600 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:17:22,603 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:17:22,603 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {sum_~m=0} Honda state: {sum_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:17:22,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:17:22,612 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:17:22,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 21:17:22,641 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:17:22,653 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 21:17:22,655 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:17:22,655 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:17:22,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:17:22,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:17:22,656 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 21:17:22,656 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:17:22,657 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:17:22,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:17:22,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_20x0-1.c_Iteration1_Loop [2019-11-28 21:17:22,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:17:22,658 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:17:22,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:17:22,757 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:17:22,764 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:17:22,772 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 21:17:22,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:17:22,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:17:22,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:17:22,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:17:22,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:17:22,783 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:17:22,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:17:22,787 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:17:22,802 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 21:17:22,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:17:22,805 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:17:22,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:17:22,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:17:22,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:17:22,809 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:17:22,810 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:17:22,813 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:17:22,828 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 21:17:22,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:17:22,831 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:17:22,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:17:22,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:17:22,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:17:22,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:17:22,834 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:17:22,839 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 21:17:22,846 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 21:17:22,846 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:17:22,855 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 21:17:22,856 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 21:17:22,856 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 21:17:22,857 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(sum_#in~n) = 1*sum_#in~n Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:17:22,864 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 21:17:22,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:17:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:17:22,939 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 21:17:22,940 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:17:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:17:22,962 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 21:17:22,963 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:17:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:17:23,018 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 21:17:23,020 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 4 states. [2019-11-28 21:17:23,124 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 4 states. Result 29 states and 34 transitions. Complement of second has 12 states. [2019-11-28 21:17:23,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 21:17:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 21:17:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-28 21:17:23,129 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-28 21:17:23,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:17:23,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-28 21:17:23,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:17:23,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-28 21:17:23,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:17:23,132 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 34 transitions. [2019-11-28 21:17:23,135 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 21:17:23,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 0 states and 0 transitions. [2019-11-28 21:17:23,139 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 21:17:23,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 21:17:23,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 21:17:23,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:17:23,141 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 21:17:23,141 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 21:17:23,141 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 21:17:23,141 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 21:17:23,141 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 21:17:23,141 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 21:17:23,142 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 21:17:23,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 09:17:23 BoogieIcfgContainer [2019-11-28 21:17:23,149 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 21:17:23,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 21:17:23,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 21:17:23,151 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 21:17:23,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:17:21" (3/4) ... [2019-11-28 21:17:23,156 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 21:17:23,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 21:17:23,161 INFO L168 Benchmark]: Toolchain (without parser) took 1817.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 952.3 MB in the beginning and 981.3 MB in the end (delta: -29.0 MB). Peak memory consumption was 86.3 MB. Max. memory is 11.5 GB. [2019-11-28 21:17:23,163 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 21:17:23,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 21:17:23,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.28 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 21:17:23,168 INFO L168 Benchmark]: Boogie Preprocessor took 71.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 21:17:23,170 INFO L168 Benchmark]: RCFGBuilder took 212.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-28 21:17:23,172 INFO L168 Benchmark]: BuchiAutomizer took 1202.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 981.3 MB in the end (delta: 112.5 MB). Peak memory consumption was 112.5 MB. Max. memory is 11.5 GB. [2019-11-28 21:17:23,172 INFO L168 Benchmark]: Witness Printer took 7.44 ms. Allocated memory is still 1.1 GB. Free memory is still 981.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 21:17:23,189 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.28 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 71.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 212.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1202.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 981.3 MB in the end (delta: 112.5 MB). Peak memory consumption was 112.5 MB. Max. memory is 11.5 GB. * Witness Printer took 7.44 ms. Allocated memory is still 1.1 GB. Free memory is still 981.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 8 SDslu, 2 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp66 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...