./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-memory-alloca/openbsd_cstrlen-alloca_true-termination.c.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: 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 /storage/repos/svcomp/c/termination-memory-alloca/openbsd_cstrlen-alloca_true-termination.c.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5ff7b92c82017cd5879c0ee0425fe0901429b3c6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:21:21,906 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:21:21,907 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:21:21,922 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:21:21,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:21:21,927 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:21:21,932 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:21:21,934 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:21:21,941 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:21:21,942 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:21:21,943 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:21:21,943 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:21:21,946 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:21:21,947 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:21:21,948 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:21:21,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:21:21,950 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:21:21,952 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:21:21,954 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:21:21,956 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:21:21,957 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:21:21,958 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:21:21,961 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:21:21,961 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:21:21,962 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:21:21,963 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:21:21,964 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:21:21,965 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:21:21,965 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:21:21,967 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:21:21,967 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:21:21,967 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:21:21,968 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:21:21,968 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:21:21,969 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:21:21,970 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:21:21,970 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:21:21,987 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:21:21,988 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:21:21,989 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:21:21,990 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:21:21,990 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:21:21,990 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:21:21,990 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:21:21,990 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:21:21,991 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:21:21,991 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:21:21,991 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:21:21,991 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:21:21,991 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:21:21,991 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:21:21,992 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:21:21,992 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:21:21,992 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:21:21,992 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:21:21,992 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:21:21,993 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:21:21,993 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:21:21,993 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:21:21,993 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:21:21,993 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:21:21,993 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:21:21,994 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:21:21,994 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:21:21,994 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:21:21,995 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:21:21,995 INFO L133 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ff7b92c82017cd5879c0ee0425fe0901429b3c6 [2018-11-28 23:21:22,042 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:21:22,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:21:22,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:21:22,065 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:21:22,067 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:21:22,067 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-memory-alloca/openbsd_cstrlen-alloca_true-termination.c.i [2018-11-28 23:21:22,140 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82068b865/1ad7c94308f146f090897097a4d999ee/FLAG34f7190f6 [2018-11-28 23:21:22,716 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:21:22,717 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-memory-alloca/openbsd_cstrlen-alloca_true-termination.c.i [2018-11-28 23:21:22,734 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82068b865/1ad7c94308f146f090897097a4d999ee/FLAG34f7190f6 [2018-11-28 23:21:23,013 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82068b865/1ad7c94308f146f090897097a4d999ee [2018-11-28 23:21:23,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:21:23,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:21:23,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:21:23,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:21:23,023 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:21:23,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:21:23" (1/1) ... [2018-11-28 23:21:23,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79624566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23, skipping insertion in model container [2018-11-28 23:21:23,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:21:23" (1/1) ... [2018-11-28 23:21:23,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:21:23,099 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:21:23,482 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:21:23,493 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:21:23,570 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:21:23,712 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:21:23,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23 WrapperNode [2018-11-28 23:21:23,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:21:23,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:21:23,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:21:23,715 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:21:23,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23" (1/1) ... [2018-11-28 23:21:23,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23" (1/1) ... [2018-11-28 23:21:23,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:21:23,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:21:23,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:21:23,767 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:21:23,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23" (1/1) ... [2018-11-28 23:21:23,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23" (1/1) ... [2018-11-28 23:21:23,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23" (1/1) ... [2018-11-28 23:21:23,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23" (1/1) ... [2018-11-28 23:21:23,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23" (1/1) ... [2018-11-28 23:21:23,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23" (1/1) ... [2018-11-28 23:21:23,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23" (1/1) ... [2018-11-28 23:21:23,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:21:23,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:21:23,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:21:23,805 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:21:23,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23" (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 [2018-11-28 23:21:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 23:21:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 23:21:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 23:21:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 23:21:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:21:23,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:21:24,189 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:21:24,190 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-11-28 23:21:24,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:21:24 BoogieIcfgContainer [2018-11-28 23:21:24,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:21:24,192 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:21:24,192 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:21:24,195 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:21:24,196 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:21:24,196 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:21:23" (1/3) ... [2018-11-28 23:21:24,197 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d4441a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:21:24, skipping insertion in model container [2018-11-28 23:21:24,198 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:21:24,198 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:21:23" (2/3) ... [2018-11-28 23:21:24,198 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d4441a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:21:24, skipping insertion in model container [2018-11-28 23:21:24,198 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:21:24,199 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:21:24" (3/3) ... [2018-11-28 23:21:24,200 INFO L375 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrlen-alloca_true-termination.c.i [2018-11-28 23:21:24,266 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:21:24,267 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:21:24,267 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:21:24,267 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:21:24,269 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:21:24,269 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:21:24,269 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:21:24,269 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:21:24,269 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:21:24,285 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-28 23:21:24,310 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:21:24,311 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:21:24,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:21:24,319 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:21:24,319 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:21:24,319 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:21:24,320 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-28 23:21:24,321 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:21:24,321 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:21:24,321 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:21:24,322 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:21:24,322 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:21:24,330 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 3#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~ret6, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 8#L557true assume !(main_~length1~0 < 1); 13#L557-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.alloc(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~str.base, cstrlen_#in~str.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 7#L551-4true [2018-11-28 23:21:24,331 INFO L796 eck$LassoCheckResult]: Loop: 7#L551-4true call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 12#L551-1true assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 4#L551-3true cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 7#L551-4true [2018-11-28 23:21:24,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:21:24,339 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2018-11-28 23:21:24,341 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:21:24,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:21:24,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:21:24,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:21:24,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:21:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:21:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:21:24,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:21:24,473 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 1 times [2018-11-28 23:21:24,473 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:21:24,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:21:24,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:21:24,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:21:24,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:21:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:21:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:21:24,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:21:24,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1806814474, now seen corresponding path program 1 times [2018-11-28 23:21:24,490 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:21:24,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:21:24,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:21:24,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:21:24,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:21:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:21:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:21:25,099 WARN L180 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-11-28 23:21:25,308 WARN L180 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-11-28 23:21:25,322 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:21:25,323 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:21:25,323 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:21:25,324 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:21:25,324 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:21:25,324 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:21:25,324 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:21:25,324 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:21:25,324 INFO L131 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrlen-alloca_true-termination.c.i_Iteration1_Lasso [2018-11-28 23:21:25,326 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:21:25,326 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:21:25,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:25,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:25,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:25,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:25,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:25,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:25,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:25,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:25,883 WARN L180 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2018-11-28 23:21:26,092 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-11-28 23:21:26,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:26,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:26,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:26,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:26,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:21:26,706 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:21:26,712 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:21:26,715 INFO L122 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 [2018-11-28 23:21:26,717 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:21:26,718 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:21:26,718 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:21:26,718 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:21:26,719 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:21:26,721 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:21:26,721 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:21:26,723 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:21:26,724 INFO L122 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 [2018-11-28 23:21:26,725 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:21:26,725 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:21:26,725 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:21:26,725 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:21:26,725 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:21:26,726 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:21:26,726 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:21:26,727 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:21:26,728 INFO L122 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 [2018-11-28 23:21:26,728 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:21:26,729 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:21:26,729 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:21:26,729 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:21:26,729 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:21:26,730 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:21:26,730 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:21:26,731 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:21:26,731 INFO L122 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 [2018-11-28 23:21:26,732 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:21:26,732 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:21:26,732 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:21:26,733 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:21:26,735 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:21:26,736 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:21:26,741 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:21:26,741 INFO L122 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 [2018-11-28 23:21:26,742 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:21:26,742 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:21:26,742 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:21:26,743 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:21:26,745 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:21:26,745 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:21:26,749 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:21:26,750 INFO L122 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 [2018-11-28 23:21:26,751 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:21:26,751 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:21:26,751 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:21:26,751 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:21:26,751 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:21:26,752 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:21:26,752 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:21:26,754 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:21:26,754 INFO L122 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 [2018-11-28 23:21:26,755 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:21:26,755 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:21:26,755 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:21:26,755 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:21:26,755 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:21:26,756 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:21:26,756 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:21:26,757 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:21:26,758 INFO L122 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 [2018-11-28 23:21:26,758 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:21:26,759 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:21:26,759 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:21:26,759 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:21:26,770 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:21:26,770 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:21:26,855 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:21:26,929 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-28 23:21:26,930 INFO L444 ModelExtractionUtils]: 23 out of 28 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 23:21:26,937 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:21:26,939 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-11-28 23:21:26,940 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:21:26,940 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc5.base)_1, ULTIMATE.start_cstrlen_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc5.base)_1 - 1*ULTIMATE.start_cstrlen_~s~0.offset Supporting invariants [] [2018-11-28 23:21:26,994 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2018-11-28 23:21:27,002 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-11-28 23:21:27,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:21:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:21:27,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:21:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:21:27,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:21:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:21:27,192 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:21:27,193 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 3 states. [2018-11-28 23:21:27,312 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 3 states. Result 22 states and 25 transitions. Complement of second has 6 states. [2018-11-28 23:21:27,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:21:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:21:27,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 23:21:27,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 23:21:27,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:21:27,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-28 23:21:27,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:21:27,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2018-11-28 23:21:27,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:21:27,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 25 transitions. [2018-11-28 23:21:27,323 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:21:27,326 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2018-11-28 23:21:27,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:21:27,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:21:27,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:21:27,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:21:27,328 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:21:27,328 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:21:27,328 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:21:27,328 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:21:27,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:21:27,329 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:21:27,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:21:27,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:21:27 BoogieIcfgContainer [2018-11-28 23:21:27,335 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:21:27,335 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:21:27,335 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:21:27,335 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:21:27,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:21:24" (3/4) ... [2018-11-28 23:21:27,340 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:21:27,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:21:27,341 INFO L168 Benchmark]: Toolchain (without parser) took 4323.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 952.7 MB in the beginning and 917.8 MB in the end (delta: 34.9 MB). Peak memory consumption was 149.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:21:27,342 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:21:27,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:21:27,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.64 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:21:27,345 INFO L168 Benchmark]: Boogie Preprocessor took 32.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:21:27,346 INFO L168 Benchmark]: RCFGBuilder took 390.92 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:21:27,347 INFO L168 Benchmark]: BuchiAutomizer took 3143.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 917.8 MB in the end (delta: 165.1 MB). Peak memory consumption was 165.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:21:27,347 INFO L168 Benchmark]: Witness Printer took 4.93 ms. Allocated memory is still 1.1 GB. Free memory is still 917.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:21:27,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 693.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.64 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 390.92 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3143.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 917.8 MB in the end (delta: 165.1 MB). Peak memory consumption was 165.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.93 ms. Allocated memory is still 1.1 GB. Free memory is still 917.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * 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 unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] + -1 * s and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.6s. 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: 7 SDtfs, 11 SDslu, 2 SDs, 0 SdLazy, 8 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital111 mio100 ax116 hnf99 lsp81 ukn91 mio100 lsp47 div100 bol100 ite100 ukn100 eq193 hnf88 smp100 dnf101 smp100 tf100 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 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...