./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD4_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 e1a6e72adfb4c8fee6c8faa90b8bdc807e2f6147 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 15:29:31,244 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:29:31,245 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:29:31,252 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:29:31,252 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:29:31,253 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:29:31,254 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:29:31,255 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:29:31,256 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:29:31,257 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:29:31,257 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:29:31,258 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:29:31,258 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:29:31,259 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:29:31,259 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:29:31,260 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:29:31,260 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:29:31,261 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:29:31,263 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:29:31,264 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:29:31,264 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:29:31,265 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:29:31,267 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:29:31,267 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:29:31,267 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:29:31,268 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:29:31,269 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:29:31,269 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:29:31,270 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:29:31,271 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:29:31,271 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:29:31,272 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:29:31,272 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:29:31,272 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:29:31,273 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:29:31,273 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:29:31,273 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 15:29:31,284 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:29:31,284 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:29:31,285 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 15:29:31,285 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 15:29:31,285 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 15:29:31,286 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 15:29:31,286 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 15:29:31,286 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 15:29:31,286 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 15:29:31,286 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 15:29:31,286 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 15:29:31,286 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:29:31,286 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 15:29:31,287 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 15:29:31,287 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:29:31,287 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 15:29:31,287 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 15:29:31,287 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 15:29:31,287 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 15:29:31,287 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 15:29:31,287 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:29:31,288 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 15:29:31,288 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:29:31,288 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:29:31,288 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 15:29:31,288 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:29:31,288 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 15:29:31,288 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 15:29:31,289 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 15:29:31,289 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_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 -> e1a6e72adfb4c8fee6c8faa90b8bdc807e2f6147 [2018-11-23 15:29:31,313 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:29:31,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:29:31,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:29:31,326 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:29:31,326 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:29:31,327 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/GCD4_true-termination_true-no-overflow.c [2018-11-23 15:29:31,374 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/data/6b9c40298/53b00d460a9546abbd79f8fb369f33e3/FLAG628fcaaad [2018-11-23 15:29:31,712 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:29:31,713 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/sv-benchmarks/c/termination-restricted-15/GCD4_true-termination_true-no-overflow.c [2018-11-23 15:29:31,718 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/data/6b9c40298/53b00d460a9546abbd79f8fb369f33e3/FLAG628fcaaad [2018-11-23 15:29:32,132 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/data/6b9c40298/53b00d460a9546abbd79f8fb369f33e3 [2018-11-23 15:29:32,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:29:32,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 15:29:32,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:29:32,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:29:32,139 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:29:32,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:32" (1/1) ... [2018-11-23 15:29:32,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72baf56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32, skipping insertion in model container [2018-11-23 15:29:32,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:32" (1/1) ... [2018-11-23 15:29:32,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:29:32,159 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:29:32,257 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:29:32,259 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:29:32,267 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:29:32,276 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:29:32,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32 WrapperNode [2018-11-23 15:29:32,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:29:32,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 15:29:32,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 15:29:32,277 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 15:29:32,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32" (1/1) ... [2018-11-23 15:29:32,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32" (1/1) ... [2018-11-23 15:29:32,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 15:29:32,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:29:32,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:29:32,294 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:29:32,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32" (1/1) ... [2018-11-23 15:29:32,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32" (1/1) ... [2018-11-23 15:29:32,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32" (1/1) ... [2018-11-23 15:29:32,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32" (1/1) ... [2018-11-23 15:29:32,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32" (1/1) ... [2018-11-23 15:29:32,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32" (1/1) ... [2018-11-23 15:29:32,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32" (1/1) ... [2018-11-23 15:29:32,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:29:32,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:29:32,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:29:32,305 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:29:32,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 [2018-11-23 15:29:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:29:32,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:29:32,453 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:29:32,453 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 15:29:32,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:32 BoogieIcfgContainer [2018-11-23 15:29:32,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:29:32,453 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 15:29:32,453 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 15:29:32,456 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 15:29:32,456 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:29:32,456 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 03:29:32" (1/3) ... [2018-11-23 15:29:32,457 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66656020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 03:29:32, skipping insertion in model container [2018-11-23 15:29:32,457 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:29:32,457 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:32" (2/3) ... [2018-11-23 15:29:32,457 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66656020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 03:29:32, skipping insertion in model container [2018-11-23 15:29:32,457 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:29:32,458 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:32" (3/3) ... [2018-11-23 15:29:32,459 INFO L375 chiAutomizerObserver]: Analyzing ICFG GCD4_true-termination_true-no-overflow.c [2018-11-23 15:29:32,502 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 15:29:32,503 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 15:29:32,503 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 15:29:32,503 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 15:29:32,503 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:29:32,503 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:29:32,503 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 15:29:32,503 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:29:32,504 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 15:29:32,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 15:29:32,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:29:32,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:29:32,528 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:29:32,533 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 15:29:32,533 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 15:29:32,533 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 15:29:32,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 15:29:32,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:29:32,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:29:32,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:29:32,534 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 15:29:32,534 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 15:29:32,541 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L13-2true [2018-11-23 15:29:32,541 INFO L796 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 3#L17-2true assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 9#L17-3true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 6#L13-2true [2018-11-23 15:29:32,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:32,546 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-23 15:29:32,548 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:32,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:32,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:32,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:29:32,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:32,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:32,605 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2018-11-23 15:29:32,605 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:32,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:32,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:32,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:29:32,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:32,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:32,620 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2018-11-23 15:29:32,620 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:32,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:32,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:32,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:29:32,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:32,713 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:29:32,713 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:29:32,713 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:29:32,714 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:29:32,714 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:29:32,714 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:32,714 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:29:32,714 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:29:32,714 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 15:29:32,714 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:29:32,715 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:29:32,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:32,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:32,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:32,907 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:29:32,908 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 [2018-11-23 15:29:32,915 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:29:32,915 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:29:32,933 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:29:32,933 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_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 [2018-11-23 15:29:32,936 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:29:32,936 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:29:32,951 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:29:32,951 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_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 [2018-11-23 15:29:32,954 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:29:32,954 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 [2018-11-23 15:29:32,974 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:29:32,974 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:29:33,789 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:29:33,790 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:29:33,790 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:29:33,790 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:29:33,790 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:29:33,790 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:29:33,790 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:33,791 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:29:33,791 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:29:33,791 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 15:29:33,791 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:29:33,791 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:29:33,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:33,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:33,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:33,856 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:29:33,859 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:29:33,860 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 [2018-11-23 15:29:33,861 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:29:33,861 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:29:33,862 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:29:33,862 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:29:33,865 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:29:33,865 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:29:33,871 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:29:33,872 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 [2018-11-23 15:29:33,872 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:29:33,872 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:29:33,872 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:29:33,873 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:29:33,874 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:29:33,874 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:29:33,880 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:29:33,881 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 [2018-11-23 15:29:33,881 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:29:33,881 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:29:33,882 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:29:33,882 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:29:33,882 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:29:33,883 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:29:33,883 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:29:33,895 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:29:33,906 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:29:33,906 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 15:29:33,908 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:29:33,908 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:29:33,908 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:29:33,909 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 15:29:33,910 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:29:33,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:33,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:33,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:29:33,981 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 15:29:33,982 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2018-11-23 15:29:34,063 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 33 states and 49 transitions. Complement of second has 10 states. [2018-11-23 15:29:34,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 15:29:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 15:29:34,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2018-11-23 15:29:34,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-23 15:29:34,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:34,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-23 15:29:34,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:34,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-23 15:29:34,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:34,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2018-11-23 15:29:34,072 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-23 15:29:34,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 11 states and 16 transitions. [2018-11-23 15:29:34,076 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-23 15:29:34,077 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-23 15:29:34,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-11-23 15:29:34,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:29:34,078 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-23 15:29:34,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-11-23 15:29:34,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-11-23 15:29:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-23 15:29:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2018-11-23 15:29:34,100 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2018-11-23 15:29:34,100 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2018-11-23 15:29:34,100 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 15:29:34,100 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2018-11-23 15:29:34,101 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-23 15:29:34,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:29:34,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:29:34,101 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-23 15:29:34,101 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 15:29:34,102 INFO L794 eck$LassoCheckResult]: Stem: 90#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 91#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 86#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 87#L17-2 [2018-11-23 15:29:34,102 INFO L796 eck$LassoCheckResult]: Loop: 87#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 87#L17-2 [2018-11-23 15:29:34,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:34,102 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2018-11-23 15:29:34,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:34,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:34,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:29:34,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:34,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:34,109 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2018-11-23 15:29:34,109 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:34,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:34,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:29:34,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:34,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:34,114 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 2 times [2018-11-23 15:29:34,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:34,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:34,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:29:34,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:34,152 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:29:34,152 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:29:34,152 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:29:34,152 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:29:34,153 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:29:34,153 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:34,153 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:29:34,153 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:29:34,153 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 15:29:34,153 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:29:34,153 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:29:34,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:34,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:34,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:34,191 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:29:34,191 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 [2018-11-23 15:29:34,193 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:29:34,193 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:29:34,213 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:29:34,213 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_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 [2018-11-23 15:29:34,216 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:29:34,216 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 [2018-11-23 15:29:34,247 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:29:34,247 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:29:34,318 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:29:34,320 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:29:34,320 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:29:34,320 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:29:34,320 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:29:34,320 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:29:34,321 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:34,321 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:29:34,321 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:29:34,321 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 15:29:34,321 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:29:34,321 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:29:34,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:34,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:34,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:34,365 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:29:34,365 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:29:34,366 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 [2018-11-23 15:29:34,367 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:29:34,367 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:29:34,367 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:29:34,367 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:29:34,368 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:29:34,368 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:29:34,373 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:29:34,373 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 [2018-11-23 15:29:34,374 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:29:34,374 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:29:34,374 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:29:34,374 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:29:34,374 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:29:34,375 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:29:34,375 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:29:34,379 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:29:34,383 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-23 15:29:34,383 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-23 15:29:34,384 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:29:34,384 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:29:34,384 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:29:34,384 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-23 15:29:34,384 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:29:34,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:34,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:34,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:29:34,401 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 [2018-11-23 15:29:34,401 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 8 Second operand 2 states. [2018-11-23 15:29:34,409 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 8. Second operand 2 states. Result 15 states and 22 transitions. Complement of second has 5 states. [2018-11-23 15:29:34,409 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 [2018-11-23 15:29:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 15:29:34,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-23 15:29:34,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2018-11-23 15:29:34,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:34,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2018-11-23 15:29:34,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:34,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-23 15:29:34,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:34,411 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 22 transitions. [2018-11-23 15:29:34,412 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:29:34,412 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2018-11-23 15:29:34,412 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-23 15:29:34,412 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-23 15:29:34,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-11-23 15:29:34,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:29:34,413 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-11-23 15:29:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-11-23 15:29:34,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-11-23 15:29:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-23 15:29:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 17 transitions. [2018-11-23 15:29:34,414 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2018-11-23 15:29:34,414 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2018-11-23 15:29:34,414 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 15:29:34,414 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 17 transitions. [2018-11-23 15:29:34,415 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:29:34,415 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:29:34,415 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:29:34,416 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-23 15:29:34,416 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 15:29:34,416 INFO L794 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 147#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 150#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 153#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 144#L17-3 [2018-11-23 15:29:34,416 INFO L796 eck$LassoCheckResult]: Loop: 144#L17-3 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 148#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 143#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 144#L17-3 [2018-11-23 15:29:34,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:34,417 INFO L82 PathProgramCache]: Analyzing trace with hash 963528, now seen corresponding path program 1 times [2018-11-23 15:29:34,417 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:34,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:34,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,418 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:29:34,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:34,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:34,424 INFO L82 PathProgramCache]: Analyzing trace with hash 52221, now seen corresponding path program 2 times [2018-11-23 15:29:34,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:34,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:34,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:29:34,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:34,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:34,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285994, now seen corresponding path program 1 times [2018-11-23 15:29:34,431 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:34,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:34,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:29:34,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:34,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 15:29:34,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:29:34,495 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 15:29:34,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:29:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:34,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 15:29:34,586 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:29:34,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-23 15:29:34,620 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:29:34,620 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:29:34,620 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:29:34,621 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:29:34,621 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:29:34,621 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:34,621 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:29:34,621 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:29:34,621 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 15:29:34,621 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:29:34,621 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:29:34,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:34,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:34,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:34,668 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:29:34,668 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:34,670 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:29:34,670 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:29:34,686 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:29:34,686 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 [2018-11-23 15:29:34,691 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:29:34,691 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/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 [2018-11-23 15:29:34,710 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:29:34,710 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:29:38,210 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:29:38,212 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:29:38,212 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:29:38,212 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:29:38,213 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:29:38,213 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:29:38,213 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:38,213 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:29:38,213 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:29:38,213 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 15:29:38,213 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:29:38,213 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:29:38,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:38,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:38,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:38,257 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:29:38,257 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:29:38,257 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 [2018-11-23 15:29:38,258 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:29:38,258 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:29:38,258 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:29:38,258 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:29:38,258 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:29:38,259 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:29:38,259 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:29:38,262 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:29:38,265 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:29:38,265 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 15:29:38,266 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:29:38,266 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:29:38,266 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:29:38,266 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-23 15:29:38,266 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:29:38,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:38,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:38,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:29:38,315 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 15:29:38,315 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 17 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-23 15:29:38,340 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 17 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 33 states and 52 transitions. Complement of second has 10 states. [2018-11-23 15:29:38,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 15:29:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 15:29:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2018-11-23 15:29:38,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-23 15:29:38,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:38,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-23 15:29:38,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:38,342 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 4 letters. Loop has 6 letters. [2018-11-23 15:29:38,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:38,342 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 52 transitions. [2018-11-23 15:29:38,343 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-23 15:29:38,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 24 states and 35 transitions. [2018-11-23 15:29:38,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-23 15:29:38,343 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-23 15:29:38,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2018-11-23 15:29:38,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:29:38,343 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2018-11-23 15:29:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2018-11-23 15:29:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-11-23 15:29:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 15:29:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2018-11-23 15:29:38,345 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2018-11-23 15:29:38,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 15:29:38,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-23 15:29:38,348 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand 9 states. [2018-11-23 15:29:38,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:29:38,424 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2018-11-23 15:29:38,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 15:29:38,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-11-23 15:29:38,425 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2018-11-23 15:29:38,425 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 19 states and 26 transitions. [2018-11-23 15:29:38,425 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-23 15:29:38,426 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-23 15:29:38,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2018-11-23 15:29:38,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:29:38,426 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2018-11-23 15:29:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2018-11-23 15:29:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 12. [2018-11-23 15:29:38,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 15:29:38,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-11-23 15:29:38,428 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-11-23 15:29:38,428 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-11-23 15:29:38,428 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 15:29:38,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2018-11-23 15:29:38,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 15:29:38,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:29:38,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:29:38,429 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-23 15:29:38,429 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 15:29:38,429 INFO L794 eck$LassoCheckResult]: Stem: 322#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 323#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 326#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 325#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 321#L17-3 [2018-11-23 15:29:38,429 INFO L796 eck$LassoCheckResult]: Loop: 321#L17-3 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 324#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 318#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 319#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 321#L17-3 [2018-11-23 15:29:38,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:38,429 INFO L82 PathProgramCache]: Analyzing trace with hash 963528, now seen corresponding path program 2 times [2018-11-23 15:29:38,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:38,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:38,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:38,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:29:38,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:38,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:38,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1618930, now seen corresponding path program 1 times [2018-11-23 15:29:38,435 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:38,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:38,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:38,437 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:29:38,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:38,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:38,443 INFO L82 PathProgramCache]: Analyzing trace with hash 780807225, now seen corresponding path program 2 times [2018-11-23 15:29:38,443 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:38,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:38,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:38,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:29:38,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:38,515 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:29:38,515 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:29:38,515 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:29:38,515 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:29:38,515 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:29:38,515 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:38,515 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:29:38,515 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:29:38,515 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-23 15:29:38,515 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:29:38,515 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:29:38,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:38,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:38,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:38,558 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:29:38,558 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:38,560 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:29:38,560 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:38,579 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:29:38,579 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:29:46,797 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:29:46,799 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:29:46,799 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:29:46,799 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:29:46,799 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:29:46,799 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:29:46,799 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:46,799 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:29:46,799 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:29:46,799 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-23 15:29:46,799 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:29:46,799 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:29:46,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:46,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:46,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:46,839 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:29:46,840 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:29:46,840 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 [2018-11-23 15:29:46,840 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:29:46,840 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:29:46,840 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:29:46,840 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:29:46,841 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:29:46,841 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:29:46,841 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:29:46,845 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:29:46,848 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:29:46,848 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 15:29:46,848 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:29:46,848 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:29:46,848 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:29:46,849 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-23 15:29:46,849 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:29:46,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:46,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:46,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 15:29:46,876 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 15:29:46,876 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-23 15:29:46,890 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 23 states and 32 transitions. Complement of second has 6 states. [2018-11-23 15:29:46,894 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 [2018-11-23 15:29:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 15:29:46,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-23 15:29:46,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-23 15:29:46,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:46,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-23 15:29:46,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:46,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-23 15:29:46,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:46,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 32 transitions. [2018-11-23 15:29:46,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 15:29:46,896 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 19 states and 27 transitions. [2018-11-23 15:29:46,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-11-23 15:29:46,897 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-23 15:29:46,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 27 transitions. [2018-11-23 15:29:46,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:29:46,897 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-23 15:29:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 27 transitions. [2018-11-23 15:29:46,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2018-11-23 15:29:46,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-23 15:29:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2018-11-23 15:29:46,898 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-23 15:29:46,898 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-23 15:29:46,898 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 15:29:46,899 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2018-11-23 15:29:46,899 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 15:29:46,899 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:29:46,899 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:29:46,899 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-23 15:29:46,899 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 15:29:46,900 INFO L794 eck$LassoCheckResult]: Stem: 405#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 406#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 415#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 412#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 411#L17-3 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 407#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 402#L17-2 [2018-11-23 15:29:46,900 INFO L796 eck$LassoCheckResult]: Loop: 402#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 402#L17-2 [2018-11-23 15:29:46,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:46,900 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 3 times [2018-11-23 15:29:46,900 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:46,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:46,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:46,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:29:46,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:46,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:46,906 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2018-11-23 15:29:46,906 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:46,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:46,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:46,907 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:29:46,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:46,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:46,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 4 times [2018-11-23 15:29:46,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:29:46,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:29:46,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:46,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:29:46,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:29:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:29:46,924 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:29:46,924 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:29:46,924 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:29:46,924 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:29:46,924 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:29:46,924 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:46,924 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:29:46,925 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:29:46,925 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-23 15:29:46,925 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:29:46,925 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:29:46,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:46,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:46,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:46,952 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:29:46,952 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:46,953 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:29:46,954 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:29:46,968 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:29:46,968 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:46,971 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:29:46,971 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:29:46,986 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:29:46,986 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:46,989 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:29:46,989 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee08bb72-d143-4188-85bf-73ccfbaa348f/bin-2019/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:47,005 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:29:47,005 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:29:47,079 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:29:47,081 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:29:47,081 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:29:47,081 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:29:47,081 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:29:47,081 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:29:47,081 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:29:47,081 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:29:47,081 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:29:47,081 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-23 15:29:47,081 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:29:47,081 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:29:47,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:47,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:47,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:29:47,104 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:29:47,104 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:29:47,105 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 [2018-11-23 15:29:47,105 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:29:47,105 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:29:47,105 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:29:47,105 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:29:47,106 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:29:47,106 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:29:47,108 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:29:47,108 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 [2018-11-23 15:29:47,109 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:29:47,109 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:29:47,109 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:29:47,109 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:29:47,110 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:29:47,110 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:29:47,112 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:29:47,112 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 [2018-11-23 15:29:47,112 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:29:47,112 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:29:47,113 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:29:47,113 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:29:47,113 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:29:47,113 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:29:47,113 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:29:47,115 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:29:47,117 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-23 15:29:47,117 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-23 15:29:47,117 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:29:47,117 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:29:47,117 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:29:47,117 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-23 15:29:47,118 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:29:47,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:47,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:47,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:29:47,134 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 [2018-11-23 15:29:47,134 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9 Second operand 2 states. [2018-11-23 15:29:47,143 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 20 states and 28 transitions. Complement of second has 5 states. [2018-11-23 15:29:47,143 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 [2018-11-23 15:29:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 15:29:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 15:29:47,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-23 15:29:47,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:47,144 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 15:29:47,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:47,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:47,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:29:47,178 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 [2018-11-23 15:29:47,178 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9 Second operand 2 states. [2018-11-23 15:29:47,183 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 20 states and 28 transitions. Complement of second has 5 states. [2018-11-23 15:29:47,184 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 [2018-11-23 15:29:47,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 15:29:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 15:29:47,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-23 15:29:47,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:47,185 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 15:29:47,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:29:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:47,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:29:47,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:29:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:29:47,197 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 [2018-11-23 15:29:47,197 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9 Second operand 2 states. [2018-11-23 15:29:47,203 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 22 states and 30 transitions. Complement of second has 4 states. [2018-11-23 15:29:47,204 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 [2018-11-23 15:29:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 15:29:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-23 15:29:47,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-23 15:29:47,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:47,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-23 15:29:47,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:47,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-23 15:29:47,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:29:47,205 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2018-11-23 15:29:47,205 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 15:29:47,206 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2018-11-23 15:29:47,206 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 15:29:47,206 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 15:29:47,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 15:29:47,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 15:29:47,206 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:29:47,206 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:29:47,206 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:29:47,206 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-23 15:29:47,206 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:29:47,206 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 15:29:47,206 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 15:29:47,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 03:29:47 BoogieIcfgContainer [2018-11-23 15:29:47,211 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 15:29:47,212 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:29:47,212 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:29:47,212 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:29:47,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:32" (3/4) ... [2018-11-23 15:29:47,215 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 15:29:47,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:29:47,216 INFO L168 Benchmark]: Toolchain (without parser) took 15081.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 959.2 MB in the beginning and 1.0 GB in the end (delta: -56.1 MB). Peak memory consumption was 83.3 MB. Max. memory is 11.5 GB. [2018-11-23 15:29:47,217 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:29:47,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.09 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:29:47,218 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.69 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:29:47,218 INFO L168 Benchmark]: Boogie Preprocessor took 10.51 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:29:47,218 INFO L168 Benchmark]: RCFGBuilder took 148.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2018-11-23 15:29:47,219 INFO L168 Benchmark]: BuchiAutomizer took 14757.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 113.6 MB). Peak memory consumption was 113.6 MB. Max. memory is 11.5 GB. [2018-11-23 15:29:47,219 INFO L168 Benchmark]: Witness Printer took 3.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:29:47,221 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.09 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.69 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.51 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 148.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 14757.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 113.6 MB). Peak memory consumption was 113.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One deterministic module has affine ranking function xtmp and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.7s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 14.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 33 SDtfs, 45 SDslu, 9 SDs, 0 SdLazy, 102 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax165 hnf95 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf91 smp100 dnf100 smp100 tf108 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 12.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...