./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 ff3652fa62b489d4e6a4a85c8349c06d13bd2232 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 17:14:00,243 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:14:00,244 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:14:00,251 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:14:00,251 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:14:00,252 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:14:00,253 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:14:00,254 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:14:00,255 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:14:00,256 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:14:00,256 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:14:00,256 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:14:00,257 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:14:00,258 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:14:00,259 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:14:00,259 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:14:00,260 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:14:00,261 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:14:00,262 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:14:00,264 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:14:00,265 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:14:00,265 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:14:00,267 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:14:00,267 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:14:00,267 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:14:00,268 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:14:00,268 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:14:00,269 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:14:00,269 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:14:00,270 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:14:00,270 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:14:00,271 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:14:00,271 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:14:00,271 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:14:00,272 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:14:00,272 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:14:00,272 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 17:14:00,282 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:14:00,282 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:14:00,282 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 17:14:00,283 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 17:14:00,283 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 17:14:00,283 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 17:14:00,283 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 17:14:00,283 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 17:14:00,283 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 17:14:00,283 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 17:14:00,283 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 17:14:00,284 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:14:00,284 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 17:14:00,284 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:14:00,284 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:14:00,284 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 17:14:00,284 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 17:14:00,284 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 17:14:00,284 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:14:00,285 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 17:14:00,285 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:14:00,285 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 17:14:00,285 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:14:00,285 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:14:00,285 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 17:14:00,285 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:14:00,285 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 17:14:00,285 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 17:14:00,286 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 17:14:00,286 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_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2018-11-18 17:14:00,310 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:14:00,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:14:00,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:14:00,320 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:14:00,320 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:14:00,321 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-18 17:14:00,354 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/data/5e513a647/f6b06da2d9f94ec6b86b40d798652d3e/FLAG742af9aa1 [2018-11-18 17:14:00,754 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:14:00,755 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-18 17:14:00,758 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/data/5e513a647/f6b06da2d9f94ec6b86b40d798652d3e/FLAG742af9aa1 [2018-11-18 17:14:00,768 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/data/5e513a647/f6b06da2d9f94ec6b86b40d798652d3e [2018-11-18 17:14:00,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:14:00,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:14:00,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:14:00,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:14:00,774 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:14:00,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:14:00" (1/1) ... [2018-11-18 17:14:00,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfef79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00, skipping insertion in model container [2018-11-18 17:14:00,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:14:00" (1/1) ... [2018-11-18 17:14:00,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:14:00,792 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:14:00,886 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:14:00,889 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:14:00,899 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:14:00,910 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:14:00,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00 WrapperNode [2018-11-18 17:14:00,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:14:00,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:14:00,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:14:00,911 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:14:00,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00" (1/1) ... [2018-11-18 17:14:00,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00" (1/1) ... [2018-11-18 17:14:00,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:14:00,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:14:00,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:14:00,930 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:14:00,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00" (1/1) ... [2018-11-18 17:14:00,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00" (1/1) ... [2018-11-18 17:14:00,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00" (1/1) ... [2018-11-18 17:14:00,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00" (1/1) ... [2018-11-18 17:14:00,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00" (1/1) ... [2018-11-18 17:14:00,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00" (1/1) ... [2018-11-18 17:14:00,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00" (1/1) ... [2018-11-18 17:14:00,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:14:00,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:14:00,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:14:00,944 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:14:00,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 [2018-11-18 17:14:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:14:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:14:01,128 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:14:01,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:14:01 BoogieIcfgContainer [2018-11-18 17:14:01,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:14:01,129 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 17:14:01,129 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 17:14:01,132 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 17:14:01,133 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 17:14:01,133 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 05:14:00" (1/3) ... [2018-11-18 17:14:01,134 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2be23a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 05:14:01, skipping insertion in model container [2018-11-18 17:14:01,134 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 17:14:01,134 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:14:00" (2/3) ... [2018-11-18 17:14:01,134 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2be23a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 05:14:01, skipping insertion in model container [2018-11-18 17:14:01,134 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 17:14:01,135 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:14:01" (3/3) ... [2018-11-18 17:14:01,136 INFO L375 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-18 17:14:01,189 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:14:01,190 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 17:14:01,190 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 17:14:01,190 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 17:14:01,190 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:14:01,190 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:14:01,190 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 17:14:01,190 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:14:01,190 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 17:14:01,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 17:14:01,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 17:14:01,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 17:14:01,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 17:14:01,224 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 17:14:01,224 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 17:14:01,224 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 17:14:01,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 17:14:01,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 17:14:01,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 17:14:01,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 17:14:01,226 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 17:14:01,226 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 17:14:01,232 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 13#L17-3true [2018-11-18 17:14:01,232 INFO L796 eck$LassoCheckResult]: Loop: 13#L17-3true assume true; 6#L17-1true assume !!(main_~x~0 >= 0);main_~y~0 := 1; 7#L19-3true assume !true; 4#L19-4true main_~x~0 := main_~x~0 - 1; 13#L17-3true [2018-11-18 17:14:01,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:01,237 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 17:14:01,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:14:01,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:14:01,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:14:01,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:01,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2018-11-18 17:14:01,302 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:14:01,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:14:01,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:14:01,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:14:01,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:14:01,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:14:01,324 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 17:14:01,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:14:01,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:14:01,334 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-11-18 17:14:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:14:01,338 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-18 17:14:01,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:14:01,339 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-18 17:14:01,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 17:14:01,342 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-18 17:14:01,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 17:14:01,343 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 17:14:01,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-18 17:14:01,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 17:14:01,344 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 17:14:01,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-18 17:14:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-18 17:14:01,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-18 17:14:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-11-18 17:14:01,363 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 17:14:01,363 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 17:14:01,363 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 17:14:01,363 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-11-18 17:14:01,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 17:14:01,363 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 17:14:01,363 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 17:14:01,364 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 17:14:01,364 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 17:14:01,364 INFO L794 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 30#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 31#L17-3 [2018-11-18 17:14:01,364 INFO L796 eck$LassoCheckResult]: Loop: 31#L17-3 assume true; 34#L17-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 35#L19-3 assume true; 36#L19-1 assume !(main_~y~0 < main_~x~0); 32#L19-4 main_~x~0 := main_~x~0 - 1; 31#L17-3 [2018-11-18 17:14:01,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:01,364 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-18 17:14:01,365 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:14:01,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:14:01,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:14:01,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:01,369 INFO L82 PathProgramCache]: Analyzing trace with hash 34543791, now seen corresponding path program 1 times [2018-11-18 17:14:01,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:14:01,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:14:01,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,370 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:14:01,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:01,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1805983277, now seen corresponding path program 1 times [2018-11-18 17:14:01,378 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:14:01,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:14:01,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:14:01,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,425 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:14:01,426 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:14:01,426 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:14:01,426 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:14:01,426 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 17:14:01,427 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:14:01,427 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:14:01,427 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:14:01,427 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 17:14:01,427 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:14:01,427 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:14:01,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:01,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:01,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:01,528 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:14:01,529 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 [2018-11-18 17:14:01,543 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:14:01,544 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:14:01,569 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:14:01,569 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_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 [2018-11-18 17:14:01,571 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:14:01,572 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:14:01,587 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:14:01,587 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_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 [2018-11-18 17:14:01,592 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:14:01,592 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 [2018-11-18 17:14:01,610 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 17:14:01,610 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:14:01,638 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 17:14:01,639 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:14:01,639 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:14:01,639 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:14:01,639 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:14:01,639 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 17:14:01,639 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:14:01,639 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:14:01,639 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:14:01,639 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 17:14:01,639 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:14:01,639 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:14:01,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:01,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:01,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:01,707 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:14:01,710 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 17:14:01,711 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:14:01,712 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:14:01,712 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:14:01,713 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:14:01,713 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:14:01,716 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 17:14:01,716 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 17:14:01,722 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:14:01,723 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:14:01,723 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:14:01,723 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:14:01,724 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:14:01,724 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:14:01,726 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 17:14:01,726 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 17:14:01,733 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:14:01,734 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:14:01,734 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:14:01,735 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 17:14:01,735 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:14:01,735 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:14:01,735 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:14:01,736 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 17:14:01,736 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 17:14:01,744 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 17:14:01,749 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 17:14:01,749 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 17:14:01,750 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 17:14:01,750 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 17:14:01,750 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 17:14:01,751 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-18 17:14:01,752 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 17:14:01,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:01,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:14:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:01,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:14:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:14:01,813 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 17:14:01,814 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 17:14:01,847 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 12 states and 15 transitions. Complement of second has 6 states. [2018-11-18 17:14:01,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 17:14:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 17:14:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 17:14:01,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 5 letters. [2018-11-18 17:14:01,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:14:01,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 5 letters. [2018-11-18 17:14:01,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:14:01,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 10 letters. [2018-11-18 17:14:01,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:14:01,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2018-11-18 17:14:01,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 17:14:01,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 11 states and 14 transitions. [2018-11-18 17:14:01,852 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-18 17:14:01,852 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-18 17:14:01,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-11-18 17:14:01,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 17:14:01,853 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 17:14:01,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-11-18 17:14:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-18 17:14:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-18 17:14:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-11-18 17:14:01,854 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 17:14:01,854 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 17:14:01,854 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 17:14:01,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-11-18 17:14:01,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 17:14:01,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 17:14:01,855 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 17:14:01,855 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 17:14:01,855 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 17:14:01,855 INFO L794 eck$LassoCheckResult]: Stem: 103#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 94#L17-3 assume true; 97#L17-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 98#L19-3 [2018-11-18 17:14:01,855 INFO L796 eck$LassoCheckResult]: Loop: 98#L19-3 assume true; 101#L19-1 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 98#L19-3 [2018-11-18 17:14:01,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:01,855 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-11-18 17:14:01,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:14:01,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:14:01,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:14:01,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:01,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 1 times [2018-11-18 17:14:01,860 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:14:01,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:14:01,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:14:01,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:01,865 INFO L82 PathProgramCache]: Analyzing trace with hash 889541519, now seen corresponding path program 1 times [2018-11-18 17:14:01,865 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:14:01,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:14:01,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:14:01,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:01,883 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:14:01,883 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:14:01,883 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:14:01,883 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:14:01,884 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 17:14:01,884 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:14:01,884 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:14:01,884 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:14:01,884 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 17:14:01,884 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:14:01,884 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:14:01,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:01,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:01,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:01,923 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:14:01,923 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:14:01,924 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:14:01,924 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:14:01,939 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:14:01,939 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_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 [2018-11-18 17:14:01,941 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:14:01,941 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:14:01,957 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:14:01,957 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_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 [2018-11-18 17:14:01,960 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:14:01,960 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 [2018-11-18 17:14:01,977 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 17:14:01,977 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:14:02,068 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 17:14:02,069 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:14:02,069 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:14:02,069 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:14:02,069 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:14:02,069 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 17:14:02,069 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:14:02,069 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:14:02,070 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:14:02,070 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 17:14:02,070 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:14:02,070 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:14:02,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:02,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:02,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:02,108 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:14:02,108 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 17:14:02,109 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:14:02,110 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:14:02,110 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:14:02,110 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:14:02,110 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:14:02,112 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 17:14:02,112 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 17:14:02,122 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:14:02,122 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:14:02,122 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:14:02,123 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:14:02,123 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:14:02,123 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:14:02,124 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 17:14:02,124 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 17:14:02,129 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:14:02,129 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:14:02,130 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:14:02,130 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 17:14:02,130 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:14:02,130 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:14:02,130 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:14:02,131 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 17:14:02,131 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 17:14:02,135 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 17:14:02,139 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 17:14:02,139 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 17:14:02,139 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 17:14:02,139 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 17:14:02,140 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 17:14:02,140 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-18 17:14:02,140 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 17:14:02,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:02,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:14:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:02,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:14:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:14:02,164 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 [2018-11-18 17:14:02,165 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-18 17:14:02,175 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 28 states and 34 transitions. Complement of second has 5 states. [2018-11-18 17:14:02,175 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 [2018-11-18 17:14:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 17:14:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 17:14:02,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-18 17:14:02,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:14:02,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-18 17:14:02,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:14:02,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-18 17:14:02,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:14:02,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 34 transitions. [2018-11-18 17:14:02,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 17:14:02,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 19 states and 23 transitions. [2018-11-18 17:14:02,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 17:14:02,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 17:14:02,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2018-11-18 17:14:02,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 17:14:02,179 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-11-18 17:14:02,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2018-11-18 17:14:02,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-11-18 17:14:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 17:14:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-11-18 17:14:02,181 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 17:14:02,181 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 17:14:02,181 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 17:14:02,181 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-11-18 17:14:02,181 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 17:14:02,181 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 17:14:02,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 17:14:02,182 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-18 17:14:02,182 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 17:14:02,182 INFO L794 eck$LassoCheckResult]: Stem: 180#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 172#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 173#L17-3 assume true; 183#L17-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 182#L19-3 assume true; 184#L19-1 assume !(main_~y~0 < main_~x~0); 170#L19-4 main_~x~0 := main_~x~0 - 1; 171#L17-3 assume true; 174#L17-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 175#L19-3 [2018-11-18 17:14:02,182 INFO L796 eck$LassoCheckResult]: Loop: 175#L19-3 assume true; 178#L19-1 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 175#L19-3 [2018-11-18 17:14:02,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:02,182 INFO L82 PathProgramCache]: Analyzing trace with hash 383141811, now seen corresponding path program 2 times [2018-11-18 17:14:02,183 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:14:02,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:14:02,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:02,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:14:02,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:02,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:02,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 2 times [2018-11-18 17:14:02,190 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:14:02,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:14:02,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:02,191 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:14:02,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:14:02,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:02,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1167906567, now seen corresponding path program 1 times [2018-11-18 17:14:02,194 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:14:02,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:14:02,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:02,196 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:14:02,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:14:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:14:02,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:14:02,253 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:14:02,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:14:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:02,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:14:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:14:02,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:14:02,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-18 17:14:02,302 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:14:02,302 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:14:02,302 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:14:02,302 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:14:02,302 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 17:14:02,302 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:14:02,302 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:14:02,303 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:14:02,303 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 17:14:02,303 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:14:02,303 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:14:02,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:02,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:02,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:02,373 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:14:02,373 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 [2018-11-18 17:14:02,388 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:14:02,388 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_284467c3-0cc9-41b0-bb44-b3e3a70010af/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 [2018-11-18 17:14:02,414 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 17:14:02,414 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:14:02,528 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 17:14:02,529 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:14:02,529 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:14:02,529 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:14:02,530 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:14:02,530 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 17:14:02,530 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:14:02,530 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:14:02,530 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:14:02,530 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 17:14:02,530 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:14:02,530 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:14:02,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:02,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:02,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:14:02,569 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:14:02,569 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 17:14:02,570 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:14:02,570 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:14:02,571 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 17:14:02,571 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:14:02,571 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:14:02,571 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:14:02,572 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 17:14:02,572 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 17:14:02,574 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 17:14:02,578 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 17:14:02,579 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 17:14:02,579 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 17:14:02,579 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 17:14:02,579 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 17:14:02,580 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-18 17:14:02,580 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 17:14:02,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:02,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:14:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:02,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:14:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:14:02,600 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 [2018-11-18 17:14:02,601 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 17:14:02,612 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 5 states. [2018-11-18 17:14:02,612 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 [2018-11-18 17:14:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 17:14:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 17:14:02,613 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2018-11-18 17:14:02,613 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:14:02,613 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 17:14:02,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:02,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:14:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:02,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:14:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:14:02,631 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 17:14:02,631 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 17:14:02,643 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 5 states. [2018-11-18 17:14:02,643 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 [2018-11-18 17:14:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 17:14:02,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 17:14:02,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2018-11-18 17:14:02,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:14:02,644 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 17:14:02,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:14:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:02,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:14:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:14:02,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:14:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:14:02,666 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 1 loop predicates [2018-11-18 17:14:02,666 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 17:14:02,684 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 24 states and 29 transitions. Complement of second has 4 states. [2018-11-18 17:14:02,685 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 [2018-11-18 17:14:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 17:14:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-11-18 17:14:02,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 2 letters. [2018-11-18 17:14:02,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:14:02,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 11 letters. Loop has 2 letters. [2018-11-18 17:14:02,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:14:02,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-18 17:14:02,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:14:02,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 29 transitions. [2018-11-18 17:14:02,688 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 17:14:02,689 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2018-11-18 17:14:02,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 17:14:02,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 17:14:02,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 17:14:02,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 17:14:02,689 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:14:02,689 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:14:02,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:14:02,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:14:02,690 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 7 states. [2018-11-18 17:14:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:14:02,690 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-18 17:14:02,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:14:02,691 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-18 17:14:02,691 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 17:14:02,691 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 17:14:02,691 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 17:14:02,691 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 17:14:02,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 17:14:02,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 17:14:02,692 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:14:02,692 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:14:02,692 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:14:02,692 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 17:14:02,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 17:14:02,692 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 17:14:02,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 17:14:02,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 05:14:02 BoogieIcfgContainer [2018-11-18 17:14:02,696 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 17:14:02,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:14:02,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:14:02,697 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:14:02,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:14:01" (3/4) ... [2018-11-18 17:14:02,699 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 17:14:02,700 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:14:02,700 INFO L168 Benchmark]: Toolchain (without parser) took 1929.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 959.1 MB in the beginning and 913.9 MB in the end (delta: 45.2 MB). Peak memory consumption was 187.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:14:02,701 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:14:02,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.57 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:14:02,702 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.89 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:14:02,703 INFO L168 Benchmark]: Boogie Preprocessor took 12.80 ms. Allocated memory is still 1.0 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:14:02,703 INFO L168 Benchmark]: RCFGBuilder took 185.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:14:02,704 INFO L168 Benchmark]: BuchiAutomizer took 1567.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.9 MB in the end (delta: 204.4 MB). Peak memory consumption was 204.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:14:02,704 INFO L168 Benchmark]: Witness Printer took 3.01 ms. Allocated memory is still 1.2 GB. Free memory is still 913.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:14:02,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.57 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.89 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.80 ms. Allocated memory is still 1.0 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 185.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1567.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.9 MB in the end (delta: 204.4 MB). Peak memory consumption was 204.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.01 ms. Allocated memory is still 1.2 GB. Free memory is still 913.9 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 44 SDtfs, 34 SDslu, 9 SDs, 0 SdLazy, 36 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf111 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...