./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer --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 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 08:53:27,294 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 08:53:27,295 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 08:53:27,301 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 08:53:27,301 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 08:53:27,302 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 08:53:27,303 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 08:53:27,304 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 08:53:27,305 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 08:53:27,305 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 08:53:27,306 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 08:53:27,306 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 08:53:27,306 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 08:53:27,307 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 08:53:27,307 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 08:53:27,308 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 08:53:27,308 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 08:53:27,309 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 08:53:27,310 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 08:53:27,311 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 08:53:27,311 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 08:53:27,312 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 08:53:27,313 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 08:53:27,313 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 08:53:27,314 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 08:53:27,314 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 08:53:27,315 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 08:53:27,315 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 08:53:27,315 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 08:53:27,316 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 08:53:27,316 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 08:53:27,317 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 08:53:27,317 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 08:53:27,317 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 08:53:27,317 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 08:53:27,318 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 08:53:27,318 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-08 08:53:27,326 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 08:53:27,326 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 08:53:27,327 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 08:53:27,327 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 08:53:27,327 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 08:53:27,327 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 08:53:27,327 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 08:53:27,327 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 08:53:27,327 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 08:53:27,328 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 08:53:27,328 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 08:53:27,328 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 08:53:27,328 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 08:53:27,328 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 08:53:27,328 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 08:53:27,328 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 08:53:27,328 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 08:53:27,328 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 08:53:27,328 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 08:53:27,329 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 08:53:27,329 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 08:53:27,329 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 08:53:27,329 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 08:53:27,329 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 08:53:27,329 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 08:53:27,329 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 08:53:27,329 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 08:53:27,329 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 08:53:27,330 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 08:53:27,330 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer 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 -> 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 [2018-12-08 08:53:27,347 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 08:53:27,354 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 08:53:27,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 08:53:27,356 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 08:53:27,357 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 08:53:27,357 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-12-08 08:53:27,391 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/data/0e3446a4c/9803e294c3fa40bf8bfad747da577134/FLAG3ddee6b37 [2018-12-08 08:53:27,775 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 08:53:27,776 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-12-08 08:53:27,779 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/data/0e3446a4c/9803e294c3fa40bf8bfad747da577134/FLAG3ddee6b37 [2018-12-08 08:53:27,787 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/data/0e3446a4c/9803e294c3fa40bf8bfad747da577134 [2018-12-08 08:53:27,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 08:53:27,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 08:53:27,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 08:53:27,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 08:53:27,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 08:53:27,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:53:27" (1/1) ... [2018-12-08 08:53:27,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd2551a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27, skipping insertion in model container [2018-12-08 08:53:27,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:53:27" (1/1) ... [2018-12-08 08:53:27,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 08:53:27,806 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 08:53:27,885 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 08:53:27,887 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 08:53:27,895 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 08:53:27,902 INFO L195 MainTranslator]: Completed translation [2018-12-08 08:53:27,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27 WrapperNode [2018-12-08 08:53:27,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 08:53:27,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 08:53:27,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 08:53:27,903 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 08:53:27,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27" (1/1) ... [2018-12-08 08:53:27,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27" (1/1) ... [2018-12-08 08:53:27,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 08:53:27,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 08:53:27,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 08:53:27,921 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 08:53:27,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27" (1/1) ... [2018-12-08 08:53:27,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27" (1/1) ... [2018-12-08 08:53:27,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27" (1/1) ... [2018-12-08 08:53:27,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27" (1/1) ... [2018-12-08 08:53:27,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27" (1/1) ... [2018-12-08 08:53:27,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27" (1/1) ... [2018-12-08 08:53:27,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27" (1/1) ... [2018-12-08 08:53:27,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 08:53:27,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 08:53:27,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 08:53:27,932 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 08:53:27,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/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 [2018-12-08 08:53:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 08:53:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 08:53:28,058 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 08:53:28,058 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-08 08:53:28,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:53:28 BoogieIcfgContainer [2018-12-08 08:53:28,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 08:53:28,059 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 08:53:28,059 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 08:53:28,061 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 08:53:28,062 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 08:53:28,062 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 08:53:27" (1/3) ... [2018-12-08 08:53:28,062 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f4aeef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 08:53:28, skipping insertion in model container [2018-12-08 08:53:28,062 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 08:53:28,062 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:53:27" (2/3) ... [2018-12-08 08:53:28,063 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f4aeef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 08:53:28, skipping insertion in model container [2018-12-08 08:53:28,063 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 08:53:28,063 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:53:28" (3/3) ... [2018-12-08 08:53:28,064 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-12-08 08:53:28,096 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 08:53:28,097 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 08:53:28,097 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 08:53:28,097 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 08:53:28,097 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 08:53:28,097 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 08:53:28,097 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 08:53:28,097 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 08:53:28,097 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 08:53:28,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-08 08:53:28,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 08:53:28,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 08:53:28,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 08:53:28,121 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 08:53:28,121 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 08:53:28,122 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 08:53:28,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-08 08:53:28,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 08:53:28,122 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 08:53:28,122 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 08:53:28,122 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 08:53:28,122 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 08:53:28,127 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2018-12-08 08:53:28,127 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 != main_~K~0); 7#L18true assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 5#L18-2true [2018-12-08 08:53:28,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:28,131 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-08 08:53:28,132 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:28,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:28,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:53:28,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:28,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:28,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-12-08 08:53:28,188 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:28,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:28,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:53:28,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:28,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:28,196 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-12-08 08:53:28,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:28,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:28,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:53:28,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:28,240 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 08:53:28,241 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 08:53:28,241 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 08:53:28,241 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 08:53:28,241 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 08:53:28,241 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:28,241 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 08:53:28,241 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 08:53:28,241 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-08 08:53:28,242 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 08:53:28,242 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 08:53:28,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:28,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:28,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:28,305 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 08:53:28,305 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 2 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:28,310 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 08:53:28,310 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 08:53:28,330 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 08:53:28,330 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:28,333 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 08:53:28,333 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 08:53:28,349 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 08:53:28,349 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:28,352 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 08:53:28,352 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:28,370 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 08:53:28,370 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 08:53:28,521 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 08:53:28,522 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 08:53:28,522 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 08:53:28,522 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 08:53:28,522 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 08:53:28,522 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 08:53:28,523 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:28,523 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 08:53:28,523 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 08:53:28,523 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-08 08:53:28,523 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 08:53:28,523 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 08:53:28,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:28,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:28,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:28,568 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 08:53:28,571 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 08:53:28,572 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 [2018-12-08 08:53:28,573 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 08:53:28,573 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 08:53:28,573 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 08:53:28,573 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 08:53:28,573 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 08:53:28,575 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 08:53:28,576 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 08:53:28,582 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 08:53:28,588 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-08 08:53:28,589 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 08:53:28,590 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 08:53:28,590 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 08:53:28,591 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 08:53:28,591 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~K~0 Supporting invariants [] [2018-12-08 08:53:28,592 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 08:53:28,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:28,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:28,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:53:28,631 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 [2018-12-08 08:53:28,632 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-12-08 08:53:28,657 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2018-12-08 08:53:28,657 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 [2018-12-08 08:53:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 08:53:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-12-08 08:53:28,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2018-12-08 08:53:28,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:28,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-08 08:53:28,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:28,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2018-12-08 08:53:28,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:28,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-12-08 08:53:28,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 08:53:28,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-12-08 08:53:28,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-08 08:53:28,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-08 08:53:28,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-12-08 08:53:28,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 08:53:28,666 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-08 08:53:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-12-08 08:53:28,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-08 08:53:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-08 08:53:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-12-08 08:53:28,682 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-08 08:53:28,682 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-08 08:53:28,682 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 08:53:28,682 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-12-08 08:53:28,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 08:53:28,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 08:53:28,683 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 08:53:28,683 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 08:53:28,683 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 08:53:28,683 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 69#L18-2 assume !!(main_~x~0 != main_~K~0); 67#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 63#L18-2 [2018-12-08 08:53:28,683 INFO L796 eck$LassoCheckResult]: Loop: 63#L18-2 assume !!(main_~x~0 != main_~K~0); 64#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 63#L18-2 [2018-12-08 08:53:28,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-12-08 08:53:28,684 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:28,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:28,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:53:28,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:28,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:28,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-12-08 08:53:28,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:28,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:28,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:53:28,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:28,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:28,692 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2018-12-08 08:53:28,692 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:28,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:28,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,693 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:53:28,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:53:28,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:53:28,720 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 08:53:28,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:53:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:28,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:53:28,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 08:53:28,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-12-08 08:53:28,766 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 08:53:28,766 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 08:53:28,766 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 08:53:28,766 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 08:53:28,766 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 08:53:28,766 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:28,766 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 08:53:28,766 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 08:53:28,766 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 08:53:28,766 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 08:53:28,766 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 08:53:28,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:28,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:28,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:28,795 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 08:53:28,795 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:28,797 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 08:53:28,797 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 08:53:28,819 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 08:53:28,819 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:28,822 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 08:53:28,822 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 08:53:28,837 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 08:53:28,837 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:28,840 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 08:53:28,840 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:28,857 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 08:53:28,857 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 08:53:29,005 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 08:53:29,006 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 08:53:29,006 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 08:53:29,006 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 08:53:29,006 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 08:53:29,006 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 08:53:29,006 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:29,006 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 08:53:29,006 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 08:53:29,006 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 08:53:29,006 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 08:53:29,006 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 08:53:29,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:29,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:29,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:29,041 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 08:53:29,042 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 08:53:29,042 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 [2018-12-08 08:53:29,043 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 08:53:29,043 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 08:53:29,043 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 08:53:29,043 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 08:53:29,045 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 08:53:29,045 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 08:53:29,047 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 08:53:29,047 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 [2018-12-08 08:53:29,048 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 08:53:29,048 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 08:53:29,048 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 08:53:29,048 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 08:53:29,049 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 08:53:29,049 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 08:53:29,053 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 08:53:29,053 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 [2018-12-08 08:53:29,053 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 08:53:29,053 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 08:53:29,053 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 08:53:29,054 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 08:53:29,054 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 08:53:29,054 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 08:53:29,054 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 08:53:29,057 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 08:53:29,060 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-08 08:53:29,060 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 08:53:29,060 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 08:53:29,060 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 08:53:29,060 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 08:53:29,060 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~K~0 Supporting invariants [] [2018-12-08 08:53:29,061 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 08:53:29,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:29,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:29,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:53:29,075 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 [2018-12-08 08:53:29,075 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 08:53:29,082 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2018-12-08 08:53:29,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 08:53:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 08:53:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-08 08:53:29,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-08 08:53:29,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:29,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-08 08:53:29,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:29,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2018-12-08 08:53:29,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:29,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2018-12-08 08:53:29,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 08:53:29,085 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2018-12-08 08:53:29,085 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-08 08:53:29,085 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 08:53:29,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-12-08 08:53:29,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 08:53:29,085 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-12-08 08:53:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-12-08 08:53:29,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-12-08 08:53:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-08 08:53:29,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2018-12-08 08:53:29,086 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-12-08 08:53:29,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 08:53:29,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:53:29,089 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2018-12-08 08:53:29,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:53:29,105 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2018-12-08 08:53:29,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 08:53:29,106 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2018-12-08 08:53:29,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 08:53:29,106 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2018-12-08 08:53:29,106 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-08 08:53:29,107 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 08:53:29,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2018-12-08 08:53:29,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 08:53:29,107 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-12-08 08:53:29,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2018-12-08 08:53:29,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2018-12-08 08:53:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-08 08:53:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-12-08 08:53:29,108 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-12-08 08:53:29,108 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-12-08 08:53:29,108 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 08:53:29,108 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-12-08 08:53:29,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 08:53:29,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 08:53:29,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 08:53:29,109 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-08 08:53:29,109 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 08:53:29,109 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 158#L18-2 assume !!(main_~x~0 != main_~K~0); 154#L18 [2018-12-08 08:53:29,109 INFO L796 eck$LassoCheckResult]: Loop: 154#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 153#L18-2 assume !!(main_~x~0 != main_~K~0); 154#L18 [2018-12-08 08:53:29,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:29,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-12-08 08:53:29,110 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:29,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:29,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:29,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:53:29,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:29,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:29,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2018-12-08 08:53:29,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:29,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:29,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:29,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:53:29,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:29,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:29,121 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2018-12-08 08:53:29,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:29,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:29,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:29,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:53:29,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:29,139 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 08:53:29,139 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 08:53:29,140 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 08:53:29,140 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 08:53:29,140 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 08:53:29,140 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:29,140 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 08:53:29,140 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 08:53:29,140 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 08:53:29,140 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 08:53:29,140 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 08:53:29,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:29,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:29,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:29,211 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 08:53:29,211 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:29,213 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 08:53:29,213 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 08:53:29,238 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 08:53:29,238 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:29,241 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 08:53:29,241 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:29,259 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 08:53:29,259 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 08:53:30,989 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 08:53:30,990 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 08:53:30,990 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 08:53:30,990 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 08:53:30,991 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 08:53:30,991 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 08:53:30,991 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:30,991 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 08:53:30,991 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 08:53:30,991 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 08:53:30,991 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 08:53:30,991 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 08:53:30,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:30,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:30,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:31,041 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 08:53:31,041 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 08:53:31,041 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 [2018-12-08 08:53:31,042 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 08:53:31,042 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 08:53:31,042 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 08:53:31,042 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-08 08:53:31,043 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 08:53:31,043 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-08 08:53:31,043 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 08:53:31,048 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 08:53:31,051 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 08:53:31,051 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 08:53:31,051 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 08:53:31,051 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 08:53:31,052 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 08:53:31,052 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~K~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-12-08 08:53:31,052 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 08:53:31,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:31,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:31,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:31,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:53:31,085 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 [2018-12-08 08:53:31,085 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-12-08 08:53:31,091 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 5 states. [2018-12-08 08:53:31,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 08:53:31,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 08:53:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-12-08 08:53:31,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-08 08:53:31,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:31,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-08 08:53:31,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:31,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-08 08:53:31,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:31,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2018-12-08 08:53:31,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 08:53:31,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-12-08 08:53:31,094 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-08 08:53:31,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-12-08 08:53:31,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-12-08 08:53:31,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 08:53:31,094 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-12-08 08:53:31,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-12-08 08:53:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-12-08 08:53:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-08 08:53:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-12-08 08:53:31,095 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-12-08 08:53:31,095 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-12-08 08:53:31,095 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 08:53:31,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2018-12-08 08:53:31,095 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 08:53:31,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 08:53:31,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 08:53:31,095 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2018-12-08 08:53:31,095 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 08:53:31,095 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 203#L18-2 assume !!(main_~x~0 != main_~K~0); 204#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 205#L18-2 assume !!(main_~x~0 != main_~K~0); 206#L18 [2018-12-08 08:53:31,095 INFO L796 eck$LassoCheckResult]: Loop: 206#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 208#L18-2 assume !!(main_~x~0 != main_~K~0); 206#L18 [2018-12-08 08:53:31,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:31,096 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2018-12-08 08:53:31,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:31,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:31,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:31,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:53:31,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:31,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:31,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2018-12-08 08:53:31,101 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:31,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:31,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:31,102 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:53:31,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:53:31,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:31,105 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2018-12-08 08:53:31,105 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:53:31,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:53:31,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:31,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:53:31,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:53:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:53:31,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:53:31,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 08:53:31,138 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 08:53:31,138 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 08:53:31,138 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 08:53:31,138 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 08:53:31,139 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 08:53:31,139 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:31,139 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 08:53:31,139 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 08:53:31,139 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-08 08:53:31,139 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 08:53:31,139 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 08:53:31,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:31,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:31,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:31,191 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 08:53:31,191 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:31,193 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 08:53:31,193 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5c8ef848-68fd-4081-881d-37af27e790a6/bin-2019/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:31,217 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 08:53:31,217 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 08:53:33,257 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 08:53:33,259 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 08:53:33,259 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 08:53:33,259 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 08:53:33,259 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 08:53:33,259 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 08:53:33,259 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 08:53:33,259 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 08:53:33,259 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 08:53:33,259 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-08 08:53:33,259 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 08:53:33,259 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 08:53:33,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:33,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:33,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 08:53:33,300 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 08:53:33,300 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 08:53:33,300 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 [2018-12-08 08:53:33,301 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 08:53:33,301 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 08:53:33,301 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 08:53:33,301 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-08 08:53:33,301 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 08:53:33,301 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-08 08:53:33,301 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 08:53:33,305 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 08:53:33,307 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 08:53:33,307 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 08:53:33,307 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 08:53:33,307 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 08:53:33,307 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 08:53:33,307 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = -2*ULTIMATE.start_main_~x~0 + 2*ULTIMATE.start_main_~K~0 + 1 Supporting invariants [] [2018-12-08 08:53:33,308 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 08:53:33,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:33,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:33,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:53:33,331 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 [2018-12-08 08:53:33,331 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-08 08:53:33,334 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2018-12-08 08:53:33,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-08 08:53:33,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 08:53:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-12-08 08:53:33,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-08 08:53:33,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:33,334 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 08:53:33,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:33,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:33,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:53:33,352 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 08:53:33,352 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-08 08:53:33,355 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2018-12-08 08:53:33,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-08 08:53:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 08:53:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-12-08 08:53:33,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-08 08:53:33,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:33,356 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 08:53:33,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:53:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:33,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:53:33,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:53:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:53:33,379 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 08:53:33,380 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-08 08:53:33,385 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 4 states. [2018-12-08 08:53:33,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 08:53:33,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 08:53:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-08 08:53:33,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-08 08:53:33,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:33,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-08 08:53:33,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:33,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2018-12-08 08:53:33,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 08:53:33,386 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2018-12-08 08:53:33,387 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 08:53:33,387 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2018-12-08 08:53:33,387 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 08:53:33,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 08:53:33,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 08:53:33,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 08:53:33,387 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 08:53:33,387 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 08:53:33,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 08:53:33,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:53:33,387 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2018-12-08 08:53:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:53:33,388 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-08 08:53:33,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 08:53:33,388 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-08 08:53:33,388 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 08:53:33,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 08:53:33,388 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 08:53:33,388 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 08:53:33,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 08:53:33,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 08:53:33,388 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 08:53:33,388 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 08:53:33,388 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 08:53:33,388 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 08:53:33,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 08:53:33,388 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 08:53:33,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 08:53:33,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 08:53:33 BoogieIcfgContainer [2018-12-08 08:53:33,393 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 08:53:33,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 08:53:33,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 08:53:33,393 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 08:53:33,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:53:28" (3/4) ... [2018-12-08 08:53:33,395 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 08:53:33,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 08:53:33,396 INFO L168 Benchmark]: Toolchain (without parser) took 5607.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 962.4 MB in the beginning and 854.9 MB in the end (delta: 107.5 MB). Peak memory consumption was 253.8 MB. Max. memory is 11.5 GB. [2018-12-08 08:53:33,397 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 08:53:33,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 113.30 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 08:53:33,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.79 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 08:53:33,397 INFO L168 Benchmark]: Boogie Preprocessor took 10.42 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 08:53:33,398 INFO L168 Benchmark]: RCFGBuilder took 127.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-12-08 08:53:33,398 INFO L168 Benchmark]: BuchiAutomizer took 5333.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 854.9 MB in the end (delta: 272.0 MB). Peak memory consumption was 272.0 MB. Max. memory is 11.5 GB. [2018-12-08 08:53:33,398 INFO L168 Benchmark]: Witness Printer took 2.70 ms. Allocated memory is still 1.2 GB. Free memory is still 854.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 08:53:33,400 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 113.30 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.79 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.42 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 127.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5333.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 854.9 MB in the end (delta: 272.0 MB). Peak memory consumption was 272.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.70 ms. Allocated memory is still 1.2 GB. Free memory is still 854.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x + -1 * K and consists of 4 locations. One deterministic module has affine ranking function x + -1 * K and consists of 3 locations. One deterministic module has affine ranking function 2 * K + -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 2 * K + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 5.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 5ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...