./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/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 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 21:56:40,283 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 21:56:40,285 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 21:56:40,293 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 21:56:40,293 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 21:56:40,293 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 21:56:40,294 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 21:56:40,295 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 21:56:40,295 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 21:56:40,296 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 21:56:40,296 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 21:56:40,296 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 21:56:40,297 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 21:56:40,297 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 21:56:40,298 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 21:56:40,298 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 21:56:40,298 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 21:56:40,299 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 21:56:40,301 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 21:56:40,301 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 21:56:40,302 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 21:56:40,302 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 21:56:40,303 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 21:56:40,303 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 21:56:40,303 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 21:56:40,304 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 21:56:40,304 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 21:56:40,305 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 21:56:40,305 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 21:56:40,306 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 21:56:40,306 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 21:56:40,306 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 21:56:40,306 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 21:56:40,306 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 21:56:40,307 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 21:56:40,307 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 21:56:40,307 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-02 21:56:40,314 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 21:56:40,314 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 21:56:40,315 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 21:56:40,315 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 21:56:40,315 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 21:56:40,316 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-02 21:56:40,316 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-02 21:56:40,316 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-02 21:56:40,316 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-02 21:56:40,316 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-02 21:56:40,316 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-02 21:56:40,316 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 21:56:40,317 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 21:56:40,317 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 21:56:40,317 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 21:56:40,317 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-02 21:56:40,317 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-02 21:56:40,317 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-02 21:56:40,317 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 21:56:40,318 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-02 21:56:40,318 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 21:56:40,318 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-02 21:56:40,318 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 21:56:40,318 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 21:56:40,318 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-02 21:56:40,319 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 21:56:40,319 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 21:56:40,319 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-02 21:56:40,320 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-02 21:56:40,320 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_c60e774b-34ae-4bf1-ae14-5ee68ac60867/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 -> 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da [2018-12-02 21:56:40,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 21:56:40,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 21:56:40,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 21:56:40,349 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 21:56:40,349 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 21:56:40,349 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-12-02 21:56:40,381 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/data/8098ff015/9b5cca1f53d74d23926da7e372020346/FLAG66cf5f21b [2018-12-02 21:56:40,664 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 21:56:40,664 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-12-02 21:56:40,668 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/data/8098ff015/9b5cca1f53d74d23926da7e372020346/FLAG66cf5f21b [2018-12-02 21:56:41,110 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/data/8098ff015/9b5cca1f53d74d23926da7e372020346 [2018-12-02 21:56:41,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 21:56:41,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 21:56:41,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 21:56:41,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 21:56:41,117 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 21:56:41,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:56:41" (1/1) ... [2018-12-02 21:56:41,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332a5ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41, skipping insertion in model container [2018-12-02 21:56:41,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:56:41" (1/1) ... [2018-12-02 21:56:41,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 21:56:41,133 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 21:56:41,212 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:56:41,214 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 21:56:41,222 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:56:41,230 INFO L195 MainTranslator]: Completed translation [2018-12-02 21:56:41,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41 WrapperNode [2018-12-02 21:56:41,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 21:56:41,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 21:56:41,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 21:56:41,231 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 21:56:41,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41" (1/1) ... [2018-12-02 21:56:41,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41" (1/1) ... [2018-12-02 21:56:41,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 21:56:41,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 21:56:41,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 21:56:41,248 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 21:56:41,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41" (1/1) ... [2018-12-02 21:56:41,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41" (1/1) ... [2018-12-02 21:56:41,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41" (1/1) ... [2018-12-02 21:56:41,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41" (1/1) ... [2018-12-02 21:56:41,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41" (1/1) ... [2018-12-02 21:56:41,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41" (1/1) ... [2018-12-02 21:56:41,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41" (1/1) ... [2018-12-02 21:56:41,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 21:56:41,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 21:56:41,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 21:56:41,259 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 21:56:41,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 21:56:41,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 21:56:41,389 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 21:56:41,389 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-02 21:56:41,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:56:41 BoogieIcfgContainer [2018-12-02 21:56:41,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 21:56:41,390 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-02 21:56:41,390 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-02 21:56:41,392 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-02 21:56:41,393 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 21:56:41,393 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.12 09:56:41" (1/3) ... [2018-12-02 21:56:41,393 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43208ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 09:56:41, skipping insertion in model container [2018-12-02 21:56:41,393 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 21:56:41,393 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:56:41" (2/3) ... [2018-12-02 21:56:41,394 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43208ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 09:56:41, skipping insertion in model container [2018-12-02 21:56:41,394 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 21:56:41,394 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:56:41" (3/3) ... [2018-12-02 21:56:41,395 INFO L375 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-12-02 21:56:41,428 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 21:56:41,428 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-02 21:56:41,428 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-02 21:56:41,429 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-02 21:56:41,429 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 21:56:41,429 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 21:56:41,429 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-02 21:56:41,429 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 21:56:41,429 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-02 21:56:41,437 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-02 21:56:41,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 21:56:41,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:56:41,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:56:41,453 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-02 21:56:41,453 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 21:56:41,454 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-02 21:56:41,454 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-02 21:56:41,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 21:56:41,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:56:41,454 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:56:41,454 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-02 21:56:41,455 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 21:56:41,459 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L18true assume main_~y1~0 > 0 && main_~y2~0 > 0; 8#L20-2true [2018-12-02 21:56:41,459 INFO L796 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~y1~0 != main_~y2~0); 10#L20true assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 8#L20-2true [2018-12-02 21:56:41,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:41,463 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-12-02 21:56:41,464 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:41,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:41,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:41,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:56:41,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:41,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:41,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2018-12-02 21:56:41,523 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:41,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:41,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:41,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:56:41,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:41,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:41,530 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2018-12-02 21:56:41,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:41,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:41,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:41,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:56:41,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:41,585 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:41,585 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:41,585 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:41,585 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:41,585 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 21:56:41,586 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:41,586 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:41,586 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:41,586 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-12-02 21:56:41,586 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:41,586 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:41,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,674 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:41,675 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:41,682 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:41,683 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:41,688 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:41,688 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:41,704 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:41,704 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:41,722 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 21:56:41,722 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:41,812 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 21:56:41,813 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:41,813 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:41,813 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:41,813 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:41,813 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 21:56:41,813 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:41,814 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:41,814 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:41,814 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-12-02 21:56:41,814 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:41,814 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:41,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:41,863 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:41,866 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 21:56:41,867 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:41,868 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:41,868 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:41,868 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:41,869 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:41,872 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:41,872 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:41,892 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 21:56:41,903 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-02 21:56:41,903 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 21:56:41,905 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 21:56:41,906 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-12-02 21:56:41,907 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 21:56:41,907 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-12-02 21:56:41,910 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-02 21:56:41,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:41,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:41,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:56:41,974 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-02 21:56:41,974 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-12-02 21:56:42,018 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2018-12-02 21:56:42,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 21:56:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 21:56:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-12-02 21:56:42,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-02 21:56:42,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:42,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-02 21:56:42,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:42,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-02 21:56:42,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:42,023 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-12-02 21:56:42,025 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 21:56:42,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2018-12-02 21:56:42,028 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-02 21:56:42,028 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-12-02 21:56:42,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-12-02 21:56:42,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 21:56:42,029 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-02 21:56:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-12-02 21:56:42,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-12-02 21:56:42,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-02 21:56:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-12-02 21:56:42,044 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-02 21:56:42,044 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-02 21:56:42,044 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-02 21:56:42,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-12-02 21:56:42,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 21:56:42,044 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:56:42,044 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:56:42,044 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-02 21:56:42,044 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 21:56:42,045 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 88#L20-2 assume !!(main_~y1~0 != main_~y2~0); 87#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 83#L20-2 [2018-12-02 21:56:42,045 INFO L796 eck$LassoCheckResult]: Loop: 83#L20-2 assume !!(main_~y1~0 != main_~y2~0); 84#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 83#L20-2 [2018-12-02 21:56:42,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:42,045 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2018-12-02 21:56:42,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:42,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:42,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:56:42,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:42,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2018-12-02 21:56:42,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:42,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:42,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:56:42,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:42,054 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2018-12-02 21:56:42,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:42,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:42,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:56:42,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,089 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:42,089 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:42,089 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:42,089 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:42,089 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 21:56:42,089 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,089 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:42,089 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:42,089 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-12-02 21:56:42,089 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:42,089 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:42,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,134 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:42,135 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,136 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:42,136 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:42,151 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:42,151 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_c60e774b-34ae-4bf1-ae14-5ee68ac60867/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 [2018-12-02 21:56:42,154 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:42,154 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:42,156 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:42,156 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,171 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:42,171 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,189 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 21:56:42,189 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:42,305 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 21:56:42,307 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:42,307 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:42,307 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:42,307 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:42,307 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 21:56:42,307 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,307 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:42,307 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:42,307 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-12-02 21:56:42,307 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:42,307 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:42,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,383 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:42,383 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 21:56:42,383 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:42,384 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:42,384 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:42,384 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:42,384 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:42,386 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:42,386 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:42,389 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:42,390 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:42,390 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:42,390 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:56:42,390 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:42,391 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:42,391 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:42,391 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:56:42,391 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:56:42,391 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:42,392 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:42,392 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:42,392 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:42,392 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:42,392 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:42,393 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:42,394 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:42,404 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 21:56:42,410 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-02 21:56:42,410 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 21:56:42,410 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 21:56:42,411 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-12-02 21:56:42,412 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 21:56:42,412 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y1~0 - 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-12-02 21:56:42,413 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-02 21:56:42,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:42,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:42,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:56:42,453 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-12-02 21:56:42,453 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-12-02 21:56:42,477 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 12 states and 17 transitions. Complement of second has 6 states. [2018-12-02 21:56:42,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 21:56:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 21:56:42,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-12-02 21:56:42,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-02 21:56:42,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:42,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-02 21:56:42,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:42,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2018-12-02 21:56:42,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:42,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2018-12-02 21:56:42,479 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 21:56:42,479 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2018-12-02 21:56:42,479 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-02 21:56:42,479 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-02 21:56:42,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2018-12-02 21:56:42,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 21:56:42,480 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-12-02 21:56:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2018-12-02 21:56:42,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-02 21:56:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-02 21:56:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2018-12-02 21:56:42,481 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-12-02 21:56:42,481 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-12-02 21:56:42,481 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-02 21:56:42,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2018-12-02 21:56:42,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 21:56:42,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:56:42,481 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:56:42,482 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2018-12-02 21:56:42,482 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 21:56:42,482 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 153#L20-2 assume !!(main_~y1~0 != main_~y2~0); 158#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 159#L20-2 assume !!(main_~y1~0 != main_~y2~0); 160#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 154#L20-2 [2018-12-02 21:56:42,482 INFO L796 eck$LassoCheckResult]: Loop: 154#L20-2 assume !!(main_~y1~0 != main_~y2~0); 155#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 154#L20-2 [2018-12-02 21:56:42,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:42,482 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2018-12-02 21:56:42,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:42,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:42,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:56:42,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:42,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2018-12-02 21:56:42,488 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:42,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:42,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,489 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:56:42,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:42,492 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2018-12-02 21:56:42,492 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:42,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:42,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,493 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:56:42,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:42,541 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:42,542 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:42,542 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:42,542 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:42,542 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 21:56:42,542 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,542 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:42,542 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:42,542 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-12-02 21:56:42,542 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:42,543 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:42,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,593 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:42,593 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,598 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:42,598 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:42,600 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:42,600 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,615 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:42,615 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:42,629 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:42,629 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,632 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:42,632 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:42,634 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:42,634 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,649 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:42,649 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:42,663 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:42,663 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_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,665 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:42,666 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 21:56:42,683 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:42,769 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 21:56:42,771 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:42,771 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:42,771 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:42,771 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:42,771 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 21:56:42,771 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:42,771 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:42,771 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:42,771 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-12-02 21:56:42,771 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:42,771 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:42,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:42,824 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:42,824 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 21:56:42,824 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:42,824 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:42,824 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:56:42,825 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:42,825 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:42,825 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:42,825 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:56:42,825 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:56:42,826 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:42,826 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:42,826 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:42,826 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:56:42,826 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:42,826 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:42,826 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:42,827 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:56:42,827 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:56:42,827 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:42,827 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:42,827 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:42,828 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:42,828 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:42,828 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:42,828 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:42,829 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:42,830 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:42,831 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:42,831 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:42,831 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:42,831 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:42,831 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:42,832 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:42,833 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:42,836 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:42,836 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:42,836 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:42,837 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:42,837 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:42,837 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:42,838 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:42,838 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:42,850 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 21:56:42,856 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-02 21:56:42,856 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 21:56:42,857 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 21:56:42,858 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-12-02 21:56:42,858 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 21:56:42,858 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-12-02 21:56:42,860 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-02 21:56:42,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:42,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:42,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:56:42,887 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-12-02 21:56:42,887 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-12-02 21:56:42,922 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2018-12-02 21:56:42,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 21:56:42,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 21:56:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-12-02 21:56:42,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-02 21:56:42,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:42,923 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 21:56:42,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:42,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:42,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:56:42,952 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2018-12-02 21:56:42,953 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-12-02 21:56:42,968 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2018-12-02 21:56:42,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 21:56:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 21:56:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-12-02 21:56:42,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-02 21:56:42,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:42,969 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 21:56:42,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:42,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:43,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:56:43,000 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-12-02 21:56:43,000 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-12-02 21:56:43,024 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 16 states and 24 transitions. Complement of second has 5 states. [2018-12-02 21:56:43,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 21:56:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 21:56:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-12-02 21:56:43,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-02 21:56:43,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:43,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-02 21:56:43,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:43,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2018-12-02 21:56:43,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:43,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2018-12-02 21:56:43,025 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-02 21:56:43,026 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2018-12-02 21:56:43,026 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-02 21:56:43,026 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-02 21:56:43,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2018-12-02 21:56:43,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 21:56:43,026 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-12-02 21:56:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2018-12-02 21:56:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2018-12-02 21:56:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-02 21:56:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-12-02 21:56:43,027 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-12-02 21:56:43,027 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-12-02 21:56:43,027 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-02 21:56:43,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-12-02 21:56:43,027 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-02 21:56:43,027 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:56:43,027 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:56:43,027 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-02 21:56:43,027 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 21:56:43,027 INFO L794 eck$LassoCheckResult]: Stem: 330#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 331#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 332#L20-2 [2018-12-02 21:56:43,027 INFO L796 eck$LassoCheckResult]: Loop: 332#L20-2 assume !!(main_~y1~0 != main_~y2~0); 334#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 332#L20-2 [2018-12-02 21:56:43,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:43,027 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2018-12-02 21:56:43,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:43,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:43,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,028 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:56:43,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:43,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1382, now seen corresponding path program 1 times [2018-12-02 21:56:43,031 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:43,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:43,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:56:43,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:43,034 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 3 times [2018-12-02 21:56:43,034 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:43,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:43,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:56:43,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,060 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:43,060 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:43,060 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:43,060 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:43,060 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 21:56:43,060 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,060 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:43,060 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:43,060 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-12-02 21:56:43,060 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:43,061 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:43,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,101 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:43,101 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,103 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:43,103 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:43,105 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:43,105 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/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 [2018-12-02 21:56:43,130 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:43,130 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:43,132 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:43,132 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/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 [2018-12-02 21:56:43,146 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:43,146 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:43,161 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:43,161 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/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 [2018-12-02 21:56:43,163 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:43,164 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:43,165 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:43,165 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,180 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:43,180 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,198 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 21:56:43,198 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:43,291 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 21:56:43,293 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:43,293 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:43,293 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:43,293 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:43,293 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 21:56:43,293 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,293 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:43,293 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:43,294 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-12-02 21:56:43,294 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:43,294 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:43,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,339 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:43,339 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 21:56:43,340 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:43,340 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:43,340 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:56:43,340 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:43,340 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:43,340 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:43,340 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:56:43,341 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:56:43,341 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:43,341 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:43,341 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:43,341 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:56:43,341 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:43,341 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:43,342 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:43,342 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:56:43,342 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:56:43,342 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:43,342 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:43,342 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:43,342 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:56:43,343 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:43,343 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:43,343 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:43,343 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:56:43,343 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:56:43,343 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:43,343 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:43,343 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:43,344 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:43,344 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:43,344 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:43,344 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:43,344 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:43,346 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:43,346 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:43,346 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:43,346 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:43,346 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:43,347 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:43,348 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:43,348 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:43,354 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 21:56:43,357 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-02 21:56:43,358 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 21:56:43,358 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 21:56:43,358 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-12-02 21:56:43,359 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 21:56:43,359 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = -1*ULTIMATE.start_main_~y1~0 + 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2018-12-02 21:56:43,360 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-02 21:56:43,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:43,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:43,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:56:43,383 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-02 21:56:43,383 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-02 21:56:43,394 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 12 states and 18 transitions. Complement of second has 5 states. [2018-12-02 21:56:43,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 21:56:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 21:56:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-12-02 21:56:43,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-02 21:56:43,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:43,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-02 21:56:43,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:43,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-02 21:56:43,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:43,396 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2018-12-02 21:56:43,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-02 21:56:43,397 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 14 transitions. [2018-12-02 21:56:43,397 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-02 21:56:43,397 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-02 21:56:43,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2018-12-02 21:56:43,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 21:56:43,397 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-12-02 21:56:43,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2018-12-02 21:56:43,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-12-02 21:56:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-02 21:56:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-12-02 21:56:43,398 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-12-02 21:56:43,399 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-12-02 21:56:43,399 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-02 21:56:43,399 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2018-12-02 21:56:43,399 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-02 21:56:43,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:56:43,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:56:43,401 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-12-02 21:56:43,401 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 21:56:43,401 INFO L794 eck$LassoCheckResult]: Stem: 389#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 390#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 391#L20-2 assume !!(main_~y1~0 != main_~y2~0); 392#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 397#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2018-12-02 21:56:43,401 INFO L796 eck$LassoCheckResult]: Loop: 395#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 396#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2018-12-02 21:56:43,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:43,401 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2018-12-02 21:56:43,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:43,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:43,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:56:43,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:43,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2018-12-02 21:56:43,406 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:43,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:43,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:56:43,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:43,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 3 times [2018-12-02 21:56:43,408 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:43,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:43,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,409 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:56:43,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:43,442 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:43,442 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:43,442 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:43,442 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:43,442 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 21:56:43,443 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,443 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:43,443 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:43,443 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-12-02 21:56:43,443 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:43,443 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:43,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,498 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:43,498 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,500 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:43,500 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:43,514 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:43,515 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_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,519 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:43,519 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:43,520 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:43,520 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,535 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:43,535 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:43,537 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:43,537 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,553 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:43,553 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:43,555 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:43,555 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,570 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:43,570 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:43,584 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:43,584 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_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,587 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:43,587 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,606 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 21:56:43,606 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:43,812 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 21:56:43,814 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:43,815 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:43,815 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:43,815 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:43,815 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 21:56:43,815 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:43,815 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:43,815 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:43,815 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-12-02 21:56:43,815 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:43,815 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:43,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:43,882 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:43,882 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 21:56:43,883 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:43,883 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:43,883 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:43,883 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:43,883 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:43,884 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:43,884 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:43,885 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:43,886 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:43,886 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:43,886 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:56:43,886 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:43,886 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:43,886 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:43,887 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:56:43,887 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:56:43,887 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:43,887 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:43,888 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:43,888 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:43,888 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:43,888 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:43,889 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:43,889 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:43,890 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:43,891 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:43,891 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:43,891 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:56:43,891 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:43,891 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:43,891 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:43,892 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:56:43,892 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:56:43,892 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:43,892 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:43,893 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:43,893 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:56:43,893 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:43,893 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:43,893 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:43,893 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:56:43,893 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:56:43,894 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:43,894 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:43,894 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:43,894 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-12-02 21:56:43,894 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-02 21:56:43,895 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:43,897 INFO L402 nArgumentSynthesizer]: We have 20 Motzkin's Theorem applications. [2018-12-02 21:56:43,897 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-12-02 21:56:43,916 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 21:56:43,927 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-12-02 21:56:43,927 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-02 21:56:43,927 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 21:56:43,928 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-12-02 21:56:43,928 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 21:56:43,929 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = 2*ULTIMATE.start_main_~y2~0 - 2*ULTIMATE.start_main_~y1~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2018-12-02 21:56:43,930 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-02 21:56:43,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:43,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:43,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:56:43,976 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2018-12-02 21:56:43,976 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-02 21:56:43,993 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 14 states and 18 transitions. Complement of second has 6 states. [2018-12-02 21:56:43,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 21:56:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 21:56:43,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-12-02 21:56:43,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-02 21:56:43,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:43,993 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 21:56:44,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:44,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:44,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:56:44,031 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 2 loop predicates [2018-12-02 21:56:44,031 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-02 21:56:44,055 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 11 states and 15 transitions. Complement of second has 6 states. [2018-12-02 21:56:44,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 21:56:44,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 21:56:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-12-02 21:56:44,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-02 21:56:44,056 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:44,056 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 21:56:44,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:44,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:44,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:56:44,088 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2018-12-02 21:56:44,088 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-02 21:56:44,107 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 17 states and 21 transitions. Complement of second has 5 states. [2018-12-02 21:56:44,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 21:56:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 21:56:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-12-02 21:56:44,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-02 21:56:44,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:44,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2018-12-02 21:56:44,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:44,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-02 21:56:44,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:44,108 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2018-12-02 21:56:44,109 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-12-02 21:56:44,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 17 transitions. [2018-12-02 21:56:44,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-02 21:56:44,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-12-02 21:56:44,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-12-02 21:56:44,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 21:56:44,109 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-12-02 21:56:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-12-02 21:56:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 8. [2018-12-02 21:56:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-02 21:56:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-12-02 21:56:44,110 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-02 21:56:44,110 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-02 21:56:44,110 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-02 21:56:44,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-12-02 21:56:44,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-02 21:56:44,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:56:44,110 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:56:44,111 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-12-02 21:56:44,111 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2018-12-02 21:56:44,111 INFO L794 eck$LassoCheckResult]: Stem: 554#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 555#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 556#L20-2 assume !!(main_~y1~0 != main_~y2~0); 557#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 561#L20-2 assume !!(main_~y1~0 != main_~y2~0); 560#L20 [2018-12-02 21:56:44,111 INFO L796 eck$LassoCheckResult]: Loop: 560#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 559#L20-2 assume !!(main_~y1~0 != main_~y2~0); 557#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 561#L20-2 assume !!(main_~y1~0 != main_~y2~0); 560#L20 [2018-12-02 21:56:44,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:44,111 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 3 times [2018-12-02 21:56:44,111 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:44,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:44,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:44,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:56:44,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:44,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:44,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1472761, now seen corresponding path program 1 times [2018-12-02 21:56:44,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:44,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:44,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:44,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:56:44,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:44,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:44,118 INFO L82 PathProgramCache]: Analyzing trace with hash -204426530, now seen corresponding path program 4 times [2018-12-02 21:56:44,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:56:44,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:56:44,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:44,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:56:44,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:56:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:56:44,142 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:44,142 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:44,142 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:44,142 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:44,142 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 21:56:44,142 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:44,142 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:44,142 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:44,142 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-02 21:56:44,142 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:44,142 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:44,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:44,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:44,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:44,211 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:44,211 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:44,214 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:44,214 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:44,228 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:44,228 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:44,231 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:44,231 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:44,245 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:56:44,245 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:44,248 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:56:44,248 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c60e774b-34ae-4bf1-ae14-5ee68ac60867/bin-2019/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:44,274 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 21:56:44,274 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:56:44,517 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 21:56:44,519 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:56:44,519 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:56:44,519 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:56:44,519 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:56:44,519 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 21:56:44,519 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:56:44,519 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:56:44,520 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:56:44,520 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-02 21:56:44,520 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:56:44,520 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:56:44,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:44,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:44,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:56:44,573 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:56:44,573 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 21:56:44,573 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:44,573 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:44,574 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:44,574 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:44,574 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:44,574 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:44,574 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:44,575 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:44,576 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:44,576 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:44,576 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:44,576 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:56:44,576 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:44,577 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:56:44,577 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:56:44,578 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:56:44,578 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:56:44,578 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:56:44,579 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:56:44,579 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:56:44,579 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-02 21:56:44,579 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:56:44,579 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-02 21:56:44,579 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:56:44,582 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 21:56:44,584 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-02 21:56:44,585 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-02 21:56:44,585 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 21:56:44,585 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 21:56:44,585 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 21:56:44,585 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y2~0 Supporting invariants [] [2018-12-02 21:56:44,586 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 21:56:44,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:56:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:44,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:56:44,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:56:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:56:44,609 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 [2018-12-02 21:56:44,609 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-12-02 21:56:44,621 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 27 states and 41 transitions. Complement of second has 6 states. [2018-12-02 21:56:44,621 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 [2018-12-02 21:56:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 21:56:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-12-02 21:56:44,621 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-02 21:56:44,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:44,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 4 letters. [2018-12-02 21:56:44,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:44,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 8 letters. [2018-12-02 21:56:44,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:56:44,622 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 41 transitions. [2018-12-02 21:56:44,622 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 21:56:44,622 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2018-12-02 21:56:44,623 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-02 21:56:44,623 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-02 21:56:44,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-02 21:56:44,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 21:56:44,623 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 21:56:44,623 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 21:56:44,623 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 21:56:44,623 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-02 21:56:44,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-02 21:56:44,623 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 21:56:44,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-02 21:56:44,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.12 09:56:44 BoogieIcfgContainer [2018-12-02 21:56:44,627 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-02 21:56:44,627 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 21:56:44,627 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 21:56:44,627 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 21:56:44,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:56:41" (3/4) ... [2018-12-02 21:56:44,630 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 21:56:44,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 21:56:44,630 INFO L168 Benchmark]: Toolchain (without parser) took 3516.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -167.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:56:44,631 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:56:44,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.75 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-02 21:56:44,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.72 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:56:44,632 INFO L168 Benchmark]: Boogie Preprocessor took 10.41 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 21:56:44,632 INFO L168 Benchmark]: RCFGBuilder took 130.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-02 21:56:44,632 INFO L168 Benchmark]: BuchiAutomizer took 3237.24 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 59.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -30.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2018-12-02 21:56:44,632 INFO L168 Benchmark]: Witness Printer took 2.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:56:44,634 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 115.75 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.72 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.41 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 130.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3237.24 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 59.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -30.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One deterministic module has affine ranking function y1 + -1 * y2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + y2 and consists of 3 locations. One deterministic module has affine ranking function y2 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y2 + -2 * y1 + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 32 SDtfs, 45 SDslu, 3 SDs, 0 SdLazy, 97 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax152 hnf92 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf96 smp87 dnf123 smp96 tf100 neg95 sie124 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 34ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 2 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 20 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...