./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-memory-alloca/openbsd_cbzero-alloca_true-termination.c.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2e94e6aa 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_cbzero-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 a9159a955cf189961722bfb66b0369c050bac9ac .................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 21:51:25,672 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:51:25,674 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:51:25,687 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:51:25,687 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:51:25,688 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:51:25,690 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:51:25,692 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:51:25,694 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:51:25,695 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:51:25,696 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:51:25,697 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:51:25,698 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:51:25,699 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:51:25,700 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:51:25,701 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:51:25,702 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:51:25,704 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:51:25,706 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:51:25,708 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:51:25,709 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:51:25,710 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:51:25,713 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:51:25,714 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:51:25,714 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:51:25,715 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:51:25,716 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:51:25,717 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:51:25,718 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:51:25,720 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:51:25,720 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:51:25,720 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:51:25,721 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:51:25,721 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:51:25,722 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:51:25,723 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:51:25,723 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-01 21:51:25,741 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:51:25,741 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:51:25,742 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:51:25,743 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:51:25,743 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:51:25,743 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 21:51:25,743 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 21:51:25,744 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 21:51:25,744 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 21:51:25,744 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 21:51:25,744 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 21:51:25,744 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:51:25,745 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:51:25,745 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:51:25,745 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:51:25,745 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 21:51:25,745 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 21:51:25,745 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 21:51:25,746 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:51:25,747 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 21:51:25,748 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:51:25,748 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 21:51:25,748 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:51:25,748 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:51:25,748 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 21:51:25,748 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:51:25,749 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:51:25,750 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 21:51:25,751 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 21:51:25,751 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 -> a9159a955cf189961722bfb66b0369c050bac9ac [2019-01-01 21:51:25,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:51:25,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:51:25,807 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:51:25,809 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:51:25,809 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:51:25,810 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-memory-alloca/openbsd_cbzero-alloca_true-termination.c.i [2019-01-01 21:51:25,866 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f463a251f/eae64b0e33724abd80d69d02455978f7/FLAGfebf81ccd [2019-01-01 21:51:26,454 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:51:26,455 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-memory-alloca/openbsd_cbzero-alloca_true-termination.c.i [2019-01-01 21:51:26,468 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f463a251f/eae64b0e33724abd80d69d02455978f7/FLAGfebf81ccd [2019-01-01 21:51:26,713 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f463a251f/eae64b0e33724abd80d69d02455978f7 [2019-01-01 21:51:26,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:51:26,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:51:26,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:51:26,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:51:26,724 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:51:26,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:51:26" (1/1) ... [2019-01-01 21:51:26,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43326a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:26, skipping insertion in model container [2019-01-01 21:51:26,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:51:26" (1/1) ... [2019-01-01 21:51:26,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:51:26,791 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:51:27,167 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:51:27,183 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:51:27,314 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:51:27,382 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:51:27,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27 WrapperNode [2019-01-01 21:51:27,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:51:27,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:51:27,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:51:27,384 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:51:27,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27" (1/1) ... [2019-01-01 21:51:27,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27" (1/1) ... [2019-01-01 21:51:27,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:51:27,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:51:27,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:51:27,433 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:51:27,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27" (1/1) ... [2019-01-01 21:51:27,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27" (1/1) ... [2019-01-01 21:51:27,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27" (1/1) ... [2019-01-01 21:51:27,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27" (1/1) ... [2019-01-01 21:51:27,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27" (1/1) ... [2019-01-01 21:51:27,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27" (1/1) ... [2019-01-01 21:51:27,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27" (1/1) ... [2019-01-01 21:51:27,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:51:27,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:51:27,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:51:27,460 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:51:27,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27" (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 [2019-01-01 21:51:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-01 21:51:27,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-01 21:51:27,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-01 21:51:27,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:51:27,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:51:27,864 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:51:27,864 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-01 21:51:27,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:51:27 BoogieIcfgContainer [2019-01-01 21:51:27,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:51:27,866 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 21:51:27,866 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 21:51:27,869 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 21:51:27,870 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:51:27,870 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 09:51:26" (1/3) ... [2019-01-01 21:51:27,871 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@be65ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:51:27, skipping insertion in model container [2019-01-01 21:51:27,872 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:51:27,872 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:51:27" (2/3) ... [2019-01-01 21:51:27,872 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@be65ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:51:27, skipping insertion in model container [2019-01-01 21:51:27,872 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:51:27,872 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:51:27" (3/3) ... [2019-01-01 21:51:27,874 INFO L375 chiAutomizerObserver]: Analyzing ICFG openbsd_cbzero-alloca_true-termination.c.i [2019-01-01 21:51:27,943 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:51:27,943 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 21:51:27,944 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 21:51:27,944 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 21:51:27,944 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:51:27,944 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:51:27,944 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 21:51:27,945 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:51:27,945 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 21:51:27,961 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-01-01 21:51:27,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-01 21:51:27,988 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:51:27,988 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:51:27,994 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-01-01 21:51:27,995 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-01 21:51:27,995 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 21:51:27,995 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-01-01 21:51:27,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-01 21:51:27,997 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:51:27,997 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:51:27,997 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-01-01 21:51:27,997 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-01 21:51:28,006 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 3#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~malloc6.base, main_#t~malloc6.offset, main_~length~0, main_~n~0, main_~nondetArea~0.base, main_~nondetArea~0.offset;main_~length~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~n~0 := main_#t~nondet5;havoc main_#t~nondet5; 7#L557true assume !(main_~length~0 < 1); 11#L557-2true assume !(main_~n~0 < 1); 13#L560-1true assume !(main_~n~0 > main_~length~0);call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnStack(main_~length~0);main_~nondetArea~0.base, main_~nondetArea~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;cbzero_#in~b.base, cbzero_#in~b.offset, cbzero_#in~length := main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~n~0;havoc cbzero_#t~post3.base, cbzero_#t~post3.offset, cbzero_#t~post2, cbzero_~b.base, cbzero_~b.offset, cbzero_~length, cbzero_~p~0.base, cbzero_~p~0.offset;cbzero_~b.base, cbzero_~b.offset := cbzero_#in~b.base, cbzero_#in~b.offset;cbzero_~length := cbzero_#in~length;havoc cbzero_~p~0.base, cbzero_~p~0.offset;cbzero_~p~0.base, cbzero_~p~0.offset := cbzero_~b.base, cbzero_~b.offset; 4#L551-3true [2019-01-01 21:51:28,007 INFO L796 eck$LassoCheckResult]: Loop: 4#L551-3true cbzero_#t~post2 := cbzero_~length;cbzero_~length := cbzero_#t~post2 - 1; 10#L551-1true assume !!(0 != cbzero_#t~post2 % 4294967296);havoc cbzero_#t~post2;cbzero_#t~post3.base, cbzero_#t~post3.offset := cbzero_~p~0.base, cbzero_~p~0.offset;cbzero_~p~0.base, cbzero_~p~0.offset := cbzero_#t~post3.base, 1 + cbzero_#t~post3.offset;call write~int(0, cbzero_#t~post3.base, cbzero_#t~post3.offset, 1);havoc cbzero_#t~post3.base, cbzero_#t~post3.offset; 4#L551-3true [2019-01-01 21:51:28,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:51:28,019 INFO L82 PathProgramCache]: Analyzing trace with hash 28695882, now seen corresponding path program 1 times [2019-01-01 21:51:28,022 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:51:28,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:51:28,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:51:28,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:51:28,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:51:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:51:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:51:28,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:51:28,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1702, now seen corresponding path program 1 times [2019-01-01 21:51:28,179 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:51:28,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:51:28,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:51:28,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:51:28,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:51:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:51:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:51:28,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:51:28,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1806939567, now seen corresponding path program 1 times [2019-01-01 21:51:28,207 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:51:28,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:51:28,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:51:28,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:51:28,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:51:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:51:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:51:28,533 WARN L181 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-01-01 21:51:28,647 WARN L181 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-01-01 21:51:29,099 WARN L181 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-01-01 21:51:29,301 WARN L181 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-01-01 21:51:29,312 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:51:29,313 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:51:29,313 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:51:29,314 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:51:29,314 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 21:51:29,314 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:51:29,314 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:51:29,314 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:51:29,315 INFO L131 ssoRankerPreferences]: Filename of dumped script: openbsd_cbzero-alloca_true-termination.c.i_Iteration1_Lasso [2019-01-01 21:51:29,315 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:51:29,315 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:51:29,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:29,882 WARN L181 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-01-01 21:51:30,003 WARN L181 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2019-01-01 21:51:30,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:30,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:30,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:30,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:30,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:30,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:30,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:30,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:30,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:30,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:30,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:51:30,307 WARN L181 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-01-01 21:51:30,510 WARN L181 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2019-01-01 21:51:30,742 WARN L181 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-01-01 21:51:30,972 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:51:30,978 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 21:51:30,981 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 [2019-01-01 21:51:30,983 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:51:30,983 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 21:51:30,984 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:51:30,984 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:51:30,984 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:51:30,986 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 21:51:30,987 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 21:51:30,990 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:51:30,990 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 [2019-01-01 21:51:30,991 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:51:30,991 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:51:30,991 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:51:30,991 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:51:30,994 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:51:30,995 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:51:31,000 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:51:31,001 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 [2019-01-01 21:51:31,001 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:51:31,005 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2019-01-01 21:51:31,005 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:51:31,005 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:51:31,017 INFO L402 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-01-01 21:51:31,021 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:51:31,064 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:51:31,065 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 [2019-01-01 21:51:31,066 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:51:31,066 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:51:31,066 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:51:31,066 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:51:31,071 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:51:31,071 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:51:31,107 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:51:31,109 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 [2019-01-01 21:51:31,110 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:51:31,110 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:51:31,110 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:51:31,110 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:51:31,119 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:51:31,120 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:51:31,217 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 21:51:31,261 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-01-01 21:51:31,262 INFO L444 ModelExtractionUtils]: 31 out of 37 variables were initially zero. Simplification set additionally 3 variables to zero. [2019-01-01 21:51:31,265 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 21:51:31,267 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-01-01 21:51:31,267 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 21:51:31,268 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cbzero_~p~0.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc6.base)_1) = -1*ULTIMATE.start_cbzero_~p~0.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc6.base)_1 Supporting invariants [] [2019-01-01 21:51:31,355 INFO L297 tatePredicateManager]: 2 out of 3 supporting invariants were superfluous and have been removed [2019-01-01 21:51:31,387 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2019-01-01 21:51:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:51:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:51:31,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:51:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:51:31,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:51:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:51:31,624 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-01-01 21:51:31,626 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2019-01-01 21:51:31,708 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 21 states and 25 transitions. Complement of second has 6 states. [2019-01-01 21:51:31,711 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 [2019-01-01 21:51:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-01 21:51:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-01-01 21:51:31,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 2 letters. [2019-01-01 21:51:31,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:51:31,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 2 letters. [2019-01-01 21:51:31,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:51:31,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 4 letters. [2019-01-01 21:51:31,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:51:31,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 25 transitions. [2019-01-01 21:51:31,720 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:51:31,723 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2019-01-01 21:51:31,724 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-01 21:51:31,725 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-01 21:51:31,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-01 21:51:31,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 21:51:31,726 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:51:31,726 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:51:31,726 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:51:31,726 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-01 21:51:31,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-01-01 21:51:31,726 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:51:31,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-01-01 21:51:31,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 09:51:31 BoogieIcfgContainer [2019-01-01 21:51:31,732 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 21:51:31,733 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:51:31,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:51:31,733 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:51:31,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:51:27" (3/4) ... [2019-01-01 21:51:31,738 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-01 21:51:31,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:51:31,739 INFO L168 Benchmark]: Toolchain (without parser) took 5021.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 951.4 MB in the beginning and 904.9 MB in the end (delta: 46.5 MB). Peak memory consumption was 191.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:51:31,740 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. [2019-01-01 21:51:31,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2019-01-01 21:51:31,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:51:31,742 INFO L168 Benchmark]: Boogie Preprocessor took 26.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:51:31,743 INFO L168 Benchmark]: RCFGBuilder took 405.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:51:31,744 INFO L168 Benchmark]: BuchiAutomizer took 3866.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.9 MB in the end (delta: 201.5 MB). Peak memory consumption was 201.5 MB. Max. memory is 11.5 GB. [2019-01-01 21:51:31,745 INFO L168 Benchmark]: Witness Printer took 5.27 ms. Allocated memory is still 1.2 GB. Free memory is still 904.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:51:31,749 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 663.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 405.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3866.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.9 MB in the end (delta: 201.5 MB). Peak memory consumption was 201.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.27 ms. Allocated memory is still 1.2 GB. Free memory is still 904.9 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 -1 * p + unknown-#length-unknown[__builtin_alloca (length * sizeof(char))] and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 3.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. 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: 12 SDtfs, 11 SDslu, 2 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital124 mio100 ax114 hnf98 lsp82 ukn93 mio100 lsp60 div160 bol100 ite100 ukn100 eq173 hnf72 smp94 dnf100 smp100 tf100 neg99 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 63ms VariablesStem: 6 VariablesLoop: 3 DisjunctsStem: 2 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 8 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...