./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/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 f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:34:28,375 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:34:28,377 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:34:28,385 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:34:28,386 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:34:28,386 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:34:28,387 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:34:28,388 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:34:28,390 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:34:28,390 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:34:28,391 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:34:28,391 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:34:28,392 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:34:28,393 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:34:28,394 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:34:28,394 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:34:28,395 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:34:28,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:34:28,398 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:34:28,399 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:34:28,400 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:34:28,401 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:34:28,403 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:34:28,403 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:34:28,403 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:34:28,404 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:34:28,404 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:34:28,405 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:34:28,406 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:34:28,407 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:34:28,407 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:34:28,407 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:34:28,408 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:34:28,408 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:34:28,408 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:34:28,409 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:34:28,409 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 08:34:28,421 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:34:28,421 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:34:28,422 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:34:28,422 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:34:28,422 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:34:28,423 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 08:34:28,423 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 08:34:28,423 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 08:34:28,423 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 08:34:28,423 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 08:34:28,423 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 08:34:28,423 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:34:28,423 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 08:34:28,424 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:34:28,424 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:34:28,424 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 08:34:28,424 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 08:34:28,424 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 08:34:28,424 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:34:28,424 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 08:34:28,424 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:34:28,425 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 08:34:28,425 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:34:28,425 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:34:28,425 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 08:34:28,425 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:34:28,427 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:34:28,427 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 08:34:28,428 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 08:34:28,428 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_0659a97b-387d-44bc-9697-21bc3f305bee/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 -> f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 [2018-11-18 08:34:28,451 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:34:28,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:34:28,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:34:28,465 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:34:28,465 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:34:28,466 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-18 08:34:28,512 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/data/392114cdf/7b8f5aecee804932b1b064d0842564d8/FLAG8f3e6be6a [2018-11-18 08:34:28,844 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:34:28,844 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-18 08:34:28,850 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/data/392114cdf/7b8f5aecee804932b1b064d0842564d8/FLAG8f3e6be6a [2018-11-18 08:34:29,285 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/data/392114cdf/7b8f5aecee804932b1b064d0842564d8 [2018-11-18 08:34:29,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:34:29,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 08:34:29,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:29,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:34:29,294 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:34:29,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3d58e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29, skipping insertion in model container [2018-11-18 08:34:29,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:34:29,319 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:34:29,434 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:29,436 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:34:29,445 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:29,452 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:34:29,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29 WrapperNode [2018-11-18 08:34:29,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:29,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 08:34:29,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 08:34:29,453 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 08:34:29,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 08:34:29,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:34:29,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:34:29,474 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:34:29,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:34:29,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:34:29,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:34:29,485 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:34:29,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:34:29,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:34:29,630 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:34:29,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:29 BoogieIcfgContainer [2018-11-18 08:34:29,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:34:29,631 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 08:34:29,631 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 08:34:29,633 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 08:34:29,634 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:29,634 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 08:34:29" (1/3) ... [2018-11-18 08:34:29,635 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b97d6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:34:29, skipping insertion in model container [2018-11-18 08:34:29,635 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:29,635 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (2/3) ... [2018-11-18 08:34:29,635 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b97d6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:34:29, skipping insertion in model container [2018-11-18 08:34:29,635 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:29,635 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:29" (3/3) ... [2018-11-18 08:34:29,637 INFO L375 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-18 08:34:29,676 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:34:29,676 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 08:34:29,676 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 08:34:29,676 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 08:34:29,676 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:34:29,677 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:34:29,677 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 08:34:29,677 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:34:29,677 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 08:34:29,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 08:34:29,699 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 08:34:29,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:29,699 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:29,704 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 08:34:29,704 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 08:34:29,704 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 08:34:29,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 08:34:29,705 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 08:34:29,705 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:29,705 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:29,706 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 08:34:29,706 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 08:34:29,713 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 13#L17-3true [2018-11-18 08:34:29,713 INFO L796 eck$LassoCheckResult]: Loop: 13#L17-3true assume true; 6#L17-1true assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 7#L19-3true assume !true; 4#L19-4true main_~x~0 := main_~x~0 - 1; 13#L17-3true [2018-11-18 08:34:29,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:29,718 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 08:34:29,720 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:29,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:29,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:29,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:29,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:29,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:29,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2018-11-18 08:34:29,777 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:29,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:29,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:29,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:29,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:29,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:29,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:34:29,801 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 08:34:29,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:34:29,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:34:29,811 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-11-18 08:34:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:29,815 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-18 08:34:29,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:34:29,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-18 08:34:29,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 08:34:29,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-18 08:34:29,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 08:34:29,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 08:34:29,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-18 08:34:29,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 08:34:29,821 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 08:34:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-18 08:34:29,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-18 08:34:29,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-18 08:34:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-11-18 08:34:29,842 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 08:34:29,843 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 08:34:29,843 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 08:34:29,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-11-18 08:34:29,843 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 08:34:29,843 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:29,843 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:29,844 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 08:34:29,844 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 08:34:29,844 INFO L794 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 30#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 31#L17-3 [2018-11-18 08:34:29,844 INFO L796 eck$LassoCheckResult]: Loop: 31#L17-3 assume true; 34#L17-1 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 35#L19-3 assume true; 36#L19-1 assume !(main_~y~0 < main_~x~0); 32#L19-4 main_~x~0 := main_~x~0 - 1; 31#L17-3 [2018-11-18 08:34:29,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:29,845 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-18 08:34:29,845 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:29,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:29,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:29,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:29,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:29,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:29,849 INFO L82 PathProgramCache]: Analyzing trace with hash 34543791, now seen corresponding path program 1 times [2018-11-18 08:34:29,849 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:29,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:29,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:29,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:29,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:29,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:29,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1805983277, now seen corresponding path program 1 times [2018-11-18 08:34:29,860 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:29,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:29,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:29,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:29,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:29,932 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:29,932 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:29,933 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:29,933 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:29,933 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:29,933 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:29,933 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:29,933 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:29,933 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 08:34:29,933 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:29,934 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:29,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:29,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:29,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:30,024 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:30,025 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,034 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:30,034 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:30,057 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:30,057 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,061 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:30,061 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:30,078 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:30,078 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,086 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:30,086 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,114 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:30,114 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:30,138 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:34:30,139 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:30,139 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:30,139 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:30,139 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:30,139 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:30,139 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,139 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:30,139 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:30,140 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 08:34:30,140 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:30,140 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:30,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:30,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:30,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:30,214 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:30,217 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:30,219 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:30,220 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:30,220 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:30,220 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:30,221 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:30,223 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:30,223 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:30,228 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:30,228 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:30,229 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:30,229 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:30,229 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:30,229 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:30,231 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:30,231 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:30,236 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:30,236 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:30,237 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:30,237 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:30,237 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:30,237 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:30,237 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:30,238 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:30,238 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:30,244 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:30,248 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 08:34:30,248 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 08:34:30,250 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:30,250 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:34:30,250 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:30,250 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-18 08:34:30,251 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:34:30,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:30,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:30,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:30,299 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 08:34:30,300 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 08:34:30,334 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 12 states and 15 transitions. Complement of second has 6 states. [2018-11-18 08:34:30,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 08:34:30,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 08:34:30,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 5 letters. [2018-11-18 08:34:30,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:30,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 5 letters. [2018-11-18 08:34:30,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:30,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 10 letters. [2018-11-18 08:34:30,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:30,339 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2018-11-18 08:34:30,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:30,339 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 11 states and 14 transitions. [2018-11-18 08:34:30,339 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-18 08:34:30,340 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-18 08:34:30,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-11-18 08:34:30,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:30,340 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 08:34:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-11-18 08:34:30,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-18 08:34:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-18 08:34:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-11-18 08:34:30,341 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 08:34:30,341 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 08:34:30,341 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 08:34:30,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-11-18 08:34:30,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:30,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:30,342 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:30,343 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 08:34:30,343 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 08:34:30,343 INFO L794 eck$LassoCheckResult]: Stem: 103#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 94#L17-3 assume true; 97#L17-1 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 98#L19-3 [2018-11-18 08:34:30,343 INFO L796 eck$LassoCheckResult]: Loop: 98#L19-3 assume true; 101#L19-1 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 98#L19-3 [2018-11-18 08:34:30,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:30,343 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-11-18 08:34:30,343 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:30,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:30,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:30,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:30,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:30,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 1 times [2018-11-18 08:34:30,349 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:30,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:30,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:30,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:30,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:30,355 INFO L82 PathProgramCache]: Analyzing trace with hash 889541519, now seen corresponding path program 1 times [2018-11-18 08:34:30,355 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:30,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:30,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:30,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:30,376 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:30,376 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:30,376 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:30,376 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:30,376 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:30,376 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,376 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:30,376 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:30,376 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-18 08:34:30,376 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:30,377 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:30,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:30,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:30,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:30,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:30,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:30,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:30,468 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:30,468 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,470 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:30,470 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:30,489 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:30,490 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_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,496 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:30,497 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:30,510 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:30,510 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_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,534 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:30,534 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:30,536 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:30,536 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_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,562 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:30,562 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:30,564 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:30,564 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_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,587 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:30,588 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:30,611 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:30,611 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,614 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:30,614 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:30,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:30,643 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:42,694 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-18 08:34:42,699 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:42,699 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:42,700 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:42,700 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:42,700 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:42,700 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:42,700 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:42,700 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:42,700 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-18 08:34:42,700 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:42,700 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:42,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:42,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:42,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:42,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:42,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:42,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:42,749 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:42,750 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:42,750 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:42,751 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:42,751 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:42,751 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:42,751 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:42,751 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:42,751 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:42,752 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:42,752 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:42,753 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:42,753 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:42,753 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:42,753 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:42,753 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:42,755 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:42,755 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:42,757 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:42,757 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:42,758 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:42,758 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:42,761 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:42,761 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:42,761 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:42,762 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:42,762 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:42,762 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:42,763 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:42,763 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:42,763 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:42,764 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:42,764 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:42,764 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:42,764 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:42,764 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:42,765 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:42,765 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:42,765 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:42,766 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:42,766 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:42,766 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:42,767 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:42,767 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:42,772 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:42,772 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:42,773 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:42,773 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:42,773 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:42,773 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:42,776 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:42,776 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:42,807 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:42,822 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 08:34:42,823 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 08:34:42,824 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:42,825 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-18 08:34:42,825 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:42,825 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-18 08:34:42,838 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-18 08:34:42,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:42,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:42,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:42,929 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 08:34:42,929 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-18 08:34:42,987 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 28 states and 34 transitions. Complement of second has 5 states. [2018-11-18 08:34:42,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 08:34:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 08:34:42,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-18 08:34:42,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:42,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-18 08:34:42,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:42,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-18 08:34:42,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:42,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 34 transitions. [2018-11-18 08:34:42,990 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:42,991 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 19 states and 23 transitions. [2018-11-18 08:34:42,991 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 08:34:42,991 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 08:34:42,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2018-11-18 08:34:42,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:42,991 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-11-18 08:34:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2018-11-18 08:34:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-11-18 08:34:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 08:34:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-11-18 08:34:42,994 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 08:34:42,995 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 08:34:42,995 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 08:34:42,995 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-11-18 08:34:42,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:42,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:42,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:42,996 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-18 08:34:42,996 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 08:34:42,996 INFO L794 eck$LassoCheckResult]: Stem: 189#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 181#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 182#L17-3 assume true; 192#L17-1 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 191#L19-3 assume true; 193#L19-1 assume !(main_~y~0 < main_~x~0); 179#L19-4 main_~x~0 := main_~x~0 - 1; 180#L17-3 assume true; 183#L17-1 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 184#L19-3 [2018-11-18 08:34:42,996 INFO L796 eck$LassoCheckResult]: Loop: 184#L19-3 assume true; 187#L19-1 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 184#L19-3 [2018-11-18 08:34:42,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:42,997 INFO L82 PathProgramCache]: Analyzing trace with hash 383141811, now seen corresponding path program 2 times [2018-11-18 08:34:42,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:42,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:42,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:42,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:42,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:43,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 2 times [2018-11-18 08:34:43,004 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:43,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:43,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:43,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:43,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1167906567, now seen corresponding path program 1 times [2018-11-18 08:34:43,009 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:43,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:43,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:43,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:43,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:34:43,052 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 08:34:43,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:43,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:43,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:34:43,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-18 08:34:43,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 08:34:43,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:34:43,115 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 7 states. [2018-11-18 08:34:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:43,158 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-11-18 08:34:43,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 08:34:43,159 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 40 transitions. [2018-11-18 08:34:43,160 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:43,161 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 21 states and 24 transitions. [2018-11-18 08:34:43,161 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-18 08:34:43,161 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-18 08:34:43,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 24 transitions. [2018-11-18 08:34:43,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:43,161 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-18 08:34:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 24 transitions. [2018-11-18 08:34:43,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2018-11-18 08:34:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 08:34:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2018-11-18 08:34:43,163 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-11-18 08:34:43,163 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-11-18 08:34:43,163 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 08:34:43,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2018-11-18 08:34:43,164 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:43,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:43,164 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:43,164 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1] [2018-11-18 08:34:43,164 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 08:34:43,165 INFO L794 eck$LassoCheckResult]: Stem: 289#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 278#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 279#L17-3 assume true; 292#L17-1 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 287#L19-3 assume true; 288#L19-1 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 295#L19-3 assume true; 293#L19-1 assume !(main_~y~0 < main_~x~0); 280#L19-4 main_~x~0 := main_~x~0 - 1; 281#L17-3 assume true; 282#L17-1 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 283#L19-3 [2018-11-18 08:34:43,165 INFO L796 eck$LassoCheckResult]: Loop: 283#L19-3 assume true; 286#L19-1 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 283#L19-3 [2018-11-18 08:34:43,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:43,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1119453267, now seen corresponding path program 2 times [2018-11-18 08:34:43,165 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:43,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:43,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:43,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:43,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 3 times [2018-11-18 08:34:43,172 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:43,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:43,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:43,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:43,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2052765069, now seen corresponding path program 3 times [2018-11-18 08:34:43,177 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:43,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:43,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:43,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:43,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:34:43,229 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 08:34:43,242 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 08:34:43,254 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 08:34:43,254 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 08:34:43,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:43,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:34:43,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-18 08:34:43,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 08:34:43,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:34:43,298 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand 8 states. [2018-11-18 08:34:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:43,347 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-18 08:34:43,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 08:34:43,348 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 40 transitions. [2018-11-18 08:34:43,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:43,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 27 states and 30 transitions. [2018-11-18 08:34:43,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 08:34:43,350 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-18 08:34:43,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 30 transitions. [2018-11-18 08:34:43,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:43,350 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-11-18 08:34:43,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 30 transitions. [2018-11-18 08:34:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2018-11-18 08:34:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 08:34:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-11-18 08:34:43,352 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-18 08:34:43,352 INFO L608 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-18 08:34:43,352 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 08:34:43,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 25 transitions. [2018-11-18 08:34:43,353 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:43,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:43,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:43,353 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1] [2018-11-18 08:34:43,353 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 08:34:43,353 INFO L794 eck$LassoCheckResult]: Stem: 396#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 388#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 389#L17-3 assume true; 401#L17-1 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 409#L19-3 assume true; 400#L19-1 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 394#L19-3 assume true; 395#L19-1 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 406#L19-3 assume true; 402#L19-1 assume !(main_~y~0 < main_~x~0); 390#L19-4 main_~x~0 := main_~x~0 - 1; 391#L17-3 assume true; 397#L17-1 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 392#L19-3 [2018-11-18 08:34:43,354 INFO L796 eck$LassoCheckResult]: Loop: 392#L19-3 assume true; 393#L19-1 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 392#L19-3 [2018-11-18 08:34:43,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:43,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2004311769, now seen corresponding path program 4 times [2018-11-18 08:34:43,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:43,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:43,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:43,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:43,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 4 times [2018-11-18 08:34:43,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:43,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:43,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:43,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:43,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1998260883, now seen corresponding path program 5 times [2018-11-18 08:34:43,366 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:43,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:43,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:43,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:43,439 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:43,439 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:43,439 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:43,439 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:43,439 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:43,439 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:43,439 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:43,439 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:43,439 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration6_Lasso [2018-11-18 08:34:43,440 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:43,440 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:43,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,483 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:43,483 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:43,486 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:43,486 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:43,487 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:43,488 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_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:43,506 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:43,506 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:43,508 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:43,508 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_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:43,523 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:43,523 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:43,525 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:43,525 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_0659a97b-387d-44bc-9697-21bc3f305bee/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:43,541 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:43,541 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:43,557 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:43,557 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_0659a97b-387d-44bc-9697-21bc3f305bee/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 [2018-11-18 08:34:43,560 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:43,561 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:43,576 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:43,576 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_0659a97b-387d-44bc-9697-21bc3f305bee/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 [2018-11-18 08:34:43,579 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:43,579 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0659a97b-387d-44bc-9697-21bc3f305bee/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 [2018-11-18 08:34:43,598 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:43,598 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:43,664 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:34:43,665 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:43,665 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:43,665 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:43,665 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:43,666 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:43,666 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:43,666 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:43,666 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:43,666 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration6_Lasso [2018-11-18 08:34:43,666 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:43,666 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:43,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:43,726 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:43,726 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:43,726 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:43,727 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:43,727 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:43,727 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:43,727 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:43,727 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:43,728 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:43,728 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:43,728 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:43,728 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:43,729 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:43,729 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:43,729 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:43,729 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:43,729 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:43,729 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:43,729 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:43,729 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:43,730 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:43,730 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:43,730 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:43,730 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:43,730 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:43,730 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:43,731 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:43,731 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:43,731 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:43,731 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:43,732 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:43,732 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:43,732 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:43,732 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:43,733 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:43,733 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:43,735 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:43,735 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:43,735 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:43,736 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:43,736 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:43,736 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:43,737 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:43,738 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:43,754 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:43,766 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-18 08:34:43,766 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-18 08:34:43,766 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:43,767 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-18 08:34:43,767 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:43,767 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-18 08:34:43,789 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-18 08:34:43,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:43,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:43,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:43,837 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 08:34:43,837 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 08:34:43,856 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 33 states and 38 transitions. Complement of second has 5 states. [2018-11-18 08:34:43,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 08:34:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 08:34:43,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-18 08:34:43,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:43,857 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 08:34:43,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:43,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:43,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:43,879 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 08:34:43,879 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 08:34:43,904 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 33 states and 38 transitions. Complement of second has 5 states. [2018-11-18 08:34:43,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 08:34:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 08:34:43,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-18 08:34:43,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:43,905 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 08:34:43,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:43,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:43,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:43,922 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 08:34:43,922 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 08:34:43,940 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 34 states and 40 transitions. Complement of second has 4 states. [2018-11-18 08:34:43,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:43,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 08:34:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-11-18 08:34:43,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-18 08:34:43,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:43,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 15 letters. Loop has 2 letters. [2018-11-18 08:34:43,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:43,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-18 08:34:43,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:43,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 40 transitions. [2018-11-18 08:34:43,943 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 08:34:43,943 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 0 states and 0 transitions. [2018-11-18 08:34:43,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 08:34:43,944 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 08:34:43,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 08:34:43,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 08:34:43,944 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:34:43,944 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:34:43,944 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:34:43,944 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 08:34:43,944 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 08:34:43,944 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 08:34:43,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 08:34:43,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 08:34:43 BoogieIcfgContainer [2018-11-18 08:34:43,949 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 08:34:43,949 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:34:43,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:34:43,949 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:34:43,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:29" (3/4) ... [2018-11-18 08:34:43,952 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 08:34:43,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:34:43,953 INFO L168 Benchmark]: Toolchain (without parser) took 14663.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 196.1 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:43,953 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:43,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.20 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:43,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.44 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 939.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:43,955 INFO L168 Benchmark]: Boogie Preprocessor took 10.29 ms. Allocated memory is still 1.0 GB. Free memory is still 939.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:43,955 INFO L168 Benchmark]: RCFGBuilder took 146.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:43,955 INFO L168 Benchmark]: BuchiAutomizer took 14318.01 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -27.1 MB). Peak memory consumption was 36.3 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:43,956 INFO L168 Benchmark]: Witness Printer took 2.95 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. [2018-11-18 08:34:43,958 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 162.20 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.44 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 939.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.29 ms. Allocated memory is still 1.0 GB. Free memory is still 939.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 146.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 14318.01 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -27.1 MB). Peak memory consumption was 36.3 MB. Max. memory is 11.5 GB. * Witness Printer took 2.95 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 (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function x + -1 * y and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.2s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 13.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 5. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 59 SDtfs, 48 SDslu, 38 SDs, 0 SdLazy, 85 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax165 hnf98 lsp59 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf92 smp100 dnf100 smp100 tf102 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 12.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...