./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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 7c08193784b646afd298f73ae6296b7af2e0cac1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:09:46,390 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:09:46,391 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:09:46,400 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:09:46,400 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:09:46,401 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:09:46,402 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:09:46,403 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:09:46,404 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:09:46,405 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:09:46,406 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:09:46,406 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:09:46,406 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:09:46,408 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:09:46,408 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:09:46,409 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:09:46,409 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:09:46,411 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:09:46,412 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:09:46,414 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:09:46,414 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:09:46,416 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:09:46,417 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:09:46,417 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:09:46,418 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:09:46,418 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:09:46,420 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:09:46,420 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:09:46,421 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:09:46,422 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:09:46,422 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:09:46,422 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:09:46,422 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:09:46,422 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:09:46,424 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:09:46,424 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:09:46,425 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:09:46,436 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:09:46,436 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:09:46,437 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:09:46,437 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:09:46,437 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:09:46,438 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:09:46,438 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:09:46,438 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:09:46,438 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:09:46,438 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:09:46,438 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:09:46,438 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:09:46,438 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:09:46,439 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:09:46,439 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:09:46,439 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:09:46,439 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:09:46,439 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:09:46,439 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:09:46,439 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:09:46,440 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:09:46,440 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:09:46,440 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:09:46,440 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:09:46,440 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:09:46,440 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:09:46,440 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:09:46,441 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:09:46,441 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_47331a55-1558-4aaf-b63b-fd7c900991bd/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 -> 7c08193784b646afd298f73ae6296b7af2e0cac1 [2018-10-27 06:09:46,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:09:46,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:09:46,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:09:46,481 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:09:46,481 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:09:46,482 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-10-27 06:09:46,527 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/data/44bc94677/b21673d19e434ef885aed0bf78125d7c/FLAG57eea50b2 [2018-10-27 06:09:46,882 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:09:46,883 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-10-27 06:09:46,890 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/data/44bc94677/b21673d19e434ef885aed0bf78125d7c/FLAG57eea50b2 [2018-10-27 06:09:46,904 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/data/44bc94677/b21673d19e434ef885aed0bf78125d7c [2018-10-27 06:09:46,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:09:46,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:09:46,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:09:46,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:09:46,915 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:09:46,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:09:46" (1/1) ... [2018-10-27 06:09:46,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccde937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:46, skipping insertion in model container [2018-10-27 06:09:46,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:09:46" (1/1) ... [2018-10-27 06:09:46,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:09:46,944 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:09:47,078 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:09:47,081 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:09:47,092 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:09:47,102 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:09:47,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47 WrapperNode [2018-10-27 06:09:47,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:09:47,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:09:47,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:09:47,104 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:09:47,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47" (1/1) ... [2018-10-27 06:09:47,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47" (1/1) ... [2018-10-27 06:09:47,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:09:47,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:09:47,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:09:47,136 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:09:47,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47" (1/1) ... [2018-10-27 06:09:47,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47" (1/1) ... [2018-10-27 06:09:47,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47" (1/1) ... [2018-10-27 06:09:47,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47" (1/1) ... [2018-10-27 06:09:47,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47" (1/1) ... [2018-10-27 06:09:47,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47" (1/1) ... [2018-10-27 06:09:47,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47" (1/1) ... [2018-10-27 06:09:47,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:09:47,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:09:47,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:09:47,161 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:09:47,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:09:47,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:09:47,504 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:09:47,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:47 BoogieIcfgContainer [2018-10-27 06:09:47,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:09:47,506 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:09:47,506 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:09:47,510 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:09:47,511 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:47,512 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:09:46" (1/3) ... [2018-10-27 06:09:47,513 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@301646bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:09:47, skipping insertion in model container [2018-10-27 06:09:47,513 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:47,513 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:47" (2/3) ... [2018-10-27 06:09:47,514 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@301646bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:09:47, skipping insertion in model container [2018-10-27 06:09:47,515 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:47,515 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:47" (3/3) ... [2018-10-27 06:09:47,518 INFO L375 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-10-27 06:09:47,578 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:09:47,578 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:09:47,578 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:09:47,579 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:09:47,579 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:09:47,579 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:09:47,579 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:09:47,579 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:09:47,579 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:09:47,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-10-27 06:09:47,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:09:47,617 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:47,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:47,625 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:09:47,625 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:09:47,625 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:09:47,626 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-10-27 06:09:47,627 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:09:47,627 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:47,627 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:47,627 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:09:47,628 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:09:47,636 INFO L793 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 7#L19-3true [2018-10-27 06:09:47,637 INFO L795 eck$LassoCheckResult]: Loop: 7#L19-3true assume true; 10#L19-1true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 11#L21-3true assume !true; 8#L21-4true main_~i~0 := main_~i~0 + 1; 7#L19-3true [2018-10-27 06:09:47,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:47,643 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:09:47,645 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:47,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:47,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:47,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:47,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:47,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:47,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2018-10-27 06:09:47,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:47,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:47,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:47,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:47,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:47,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:47,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:09:47,784 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:09:47,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 06:09:47,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 06:09:47,801 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-10-27 06:09:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:09:47,807 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-27 06:09:47,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:09:47,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-10-27 06:09:47,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:09:47,814 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-10-27 06:09:47,815 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-10-27 06:09:47,815 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-10-27 06:09:47,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-10-27 06:09:47,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:09:47,816 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-10-27 06:09:47,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-10-27 06:09:47,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-27 06:09:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-27 06:09:47,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-10-27 06:09:47,844 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-10-27 06:09:47,844 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-10-27 06:09:47,844 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:09:47,844 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-10-27 06:09:47,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:09:47,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:47,845 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:47,845 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:09:47,845 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:09:47,846 INFO L793 eck$LassoCheckResult]: Stem: 32#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_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 31#L19-3 [2018-10-27 06:09:47,846 INFO L795 eck$LassoCheckResult]: Loop: 31#L19-3 assume true; 33#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 35#L21-3 assume true; 36#L21-1 assume !(main_~j~0 <= main_~i~0); 34#L21-4 main_~i~0 := main_~i~0 + 1; 31#L19-3 [2018-10-27 06:09:47,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:47,846 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-10-27 06:09:47,846 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:47,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:47,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:47,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:47,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:47,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:47,854 INFO L82 PathProgramCache]: Analyzing trace with hash 34543791, now seen corresponding path program 1 times [2018-10-27 06:09:47,854 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:47,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:47,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:47,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:47,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:47,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:47,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1805983277, now seen corresponding path program 1 times [2018-10-27 06:09:47,867 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:47,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:47,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:47,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:47,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:48,061 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 06:09:48,087 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:48,088 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:48,088 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:48,088 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:48,089 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:48,089 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:48,089 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:48,089 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:48,089 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:09:48,089 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:48,090 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:48,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:48,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:48,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:48,370 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:48,371 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:48,382 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:48,382 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:48,415 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:48,416 INFO L446 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_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:48,421 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:48,422 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:48,444 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:48,444 INFO L446 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_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:48,449 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:48,449 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:48,485 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:48,486 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:48,649 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:48,650 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:48,650 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:48,651 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:48,651 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:48,651 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:48,651 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:48,651 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:48,651 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:48,651 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:09:48,651 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:48,652 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:48,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:48,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:48,805 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 06:09:48,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:48,989 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:48,994 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:48,995 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 [2018-10-27 06:09:48,997 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:48,997 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:48,997 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:48,997 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:49,001 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:09:49,001 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:09:49,011 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:09:49,011 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 [2018-10-27 06:09:49,012 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:49,012 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:49,013 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:49,013 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:49,013 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:49,014 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:49,014 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:49,025 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:49,035 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-10-27 06:09:49,035 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-10-27 06:09:49,037 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:49,038 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:49,038 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:49,038 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-10-27 06:09:49,039 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:49,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:49,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:49,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:49,245 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:09:49,245 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 5 states. [2018-10-27 06:09:49,316 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 21 states and 26 transitions. Complement of second has 8 states. [2018-10-27 06:09:49,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-10-27 06:09:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:09:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2018-10-27 06:09:49,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 5 letters. [2018-10-27 06:09:49,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:49,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 7 letters. Loop has 5 letters. [2018-10-27 06:09:49,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:49,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 10 letters. [2018-10-27 06:09:49,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:49,324 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2018-10-27 06:09:49,325 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-10-27 06:09:49,326 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 25 transitions. [2018-10-27 06:09:49,326 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-10-27 06:09:49,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-10-27 06:09:49,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 25 transitions. [2018-10-27 06:09:49,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:49,327 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2018-10-27 06:09:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 25 transitions. [2018-10-27 06:09:49,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-10-27 06:09:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-27 06:09:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2018-10-27 06:09:49,330 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2018-10-27 06:09:49,330 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2018-10-27 06:09:49,330 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:09:49,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 24 transitions. [2018-10-27 06:09:49,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-10-27 06:09:49,334 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:49,334 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:49,335 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:09:49,335 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2018-10-27 06:09:49,335 INFO L793 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 107#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 108#L19-3 assume true; 110#L19-1 [2018-10-27 06:09:49,335 INFO L795 eck$LassoCheckResult]: Loop: 110#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 116#L21-3 assume true; 117#L21-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + 1; 121#L21-3 assume true; 122#L21-1 assume !(main_~j~0 <= main_~i~0); 114#L21-4 main_~i~0 := main_~i~0 + 1; 109#L19-3 assume true; 110#L19-1 [2018-10-27 06:09:49,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:49,336 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-10-27 06:09:49,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:49,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:49,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:49,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:49,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:49,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:49,344 INFO L82 PathProgramCache]: Analyzing trace with hash -13166815, now seen corresponding path program 1 times [2018-10-27 06:09:49,344 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:49,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:49,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:49,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:49,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:49,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:49,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1005942721, now seen corresponding path program 1 times [2018-10-27 06:09:49,357 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:49,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:49,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:49,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:49,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:49,440 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:49,440 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:49,441 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:49,441 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:49,441 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:49,441 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:49,441 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:49,441 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:49,441 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:09:49,442 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:49,442 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:49,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:49,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:49,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:49,635 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-10-27 06:09:49,984 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 06:09:49,985 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:49,986 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:49,989 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:49,989 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:50,008 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:50,008 INFO L446 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_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:50,012 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:50,012 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:50,029 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:50,029 INFO L446 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_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:50,033 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:50,033 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:50,056 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:50,057 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:50,119 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:50,121 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:50,121 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:50,121 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:50,121 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:50,121 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:50,121 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:50,122 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:50,122 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:50,122 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:09:50,122 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:50,122 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:50,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:50,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:50,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:50,214 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:50,214 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:50,215 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 [2018-10-27 06:09:50,215 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:50,216 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:50,216 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:50,216 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:50,217 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:09:50,218 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:09:50,223 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:09:50,224 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 [2018-10-27 06:09:50,224 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:50,224 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:50,224 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:50,224 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:50,226 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:09:50,226 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:09:50,233 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:09:50,233 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 [2018-10-27 06:09:50,234 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:50,234 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:50,234 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:50,234 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:50,234 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:50,237 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:50,237 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:50,242 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:50,246 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:09:50,247 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:09:50,247 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:50,247 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:50,247 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:50,248 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2018-10-27 06:09:50,248 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:50,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:50,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:50,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:50,412 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2018-10-27 06:09:50,412 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 24 transitions. cyclomatic complexity: 7 Second operand 6 states. [2018-10-27 06:09:50,512 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 24 transitions. cyclomatic complexity: 7. Second operand 6 states. Result 53 states and 68 transitions. Complement of second has 12 states. [2018-10-27 06:09:50,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-10-27 06:09:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-27 06:09:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 19 transitions. [2018-10-27 06:09:50,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 19 transitions. Stem has 3 letters. Loop has 7 letters. [2018-10-27 06:09:50,513 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:50,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 19 transitions. Stem has 10 letters. Loop has 7 letters. [2018-10-27 06:09:50,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:50,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 19 transitions. Stem has 3 letters. Loop has 14 letters. [2018-10-27 06:09:50,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:50,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 68 transitions. [2018-10-27 06:09:50,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-10-27 06:09:50,517 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 41 states and 52 transitions. [2018-10-27 06:09:50,517 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-10-27 06:09:50,518 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-10-27 06:09:50,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2018-10-27 06:09:50,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:50,518 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2018-10-27 06:09:50,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2018-10-27 06:09:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2018-10-27 06:09:50,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-27 06:09:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2018-10-27 06:09:50,521 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2018-10-27 06:09:50,521 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2018-10-27 06:09:50,521 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:09:50,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 44 transitions. [2018-10-27 06:09:50,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-10-27 06:09:50,522 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:50,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:50,522 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-10-27 06:09:50,522 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1, 1] [2018-10-27 06:09:50,522 INFO L793 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 246#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 247#L19-3 assume true; 268#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 267#L21-3 [2018-10-27 06:09:50,522 INFO L795 eck$LassoCheckResult]: Loop: 267#L21-3 assume true; 263#L21-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + 1; 256#L21-3 assume true; 257#L21-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + 1; 266#L21-3 assume true; 265#L21-1 assume !(main_~j~0 <= main_~i~0); 253#L21-4 main_~i~0 := main_~i~0 + 1; 248#L19-3 assume true; 249#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 267#L21-3 [2018-10-27 06:09:50,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:50,523 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-10-27 06:09:50,524 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:50,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:50,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:50,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:50,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:50,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:50,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1698463761, now seen corresponding path program 2 times [2018-10-27 06:09:50,529 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:50,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:50,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:50,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:50,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:50,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:50,546 INFO L82 PathProgramCache]: Analyzing trace with hash -2004311769, now seen corresponding path program 2 times [2018-10-27 06:09:50,546 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:50,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:50,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:50,548 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:50,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:50,610 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:50,611 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:50,611 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:50,611 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:50,611 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:50,611 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:50,611 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:50,611 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:50,611 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:09:50,611 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:50,612 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:50,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:50,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:50,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:50,691 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:50,691 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:50,694 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:50,694 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:50,712 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:50,712 INFO L446 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_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:50,715 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:50,715 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:50,736 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:50,736 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:50,889 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:50,890 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:50,890 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:50,891 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:50,891 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:50,891 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:50,891 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:50,891 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:50,891 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:50,891 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:09:50,891 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:50,892 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:50,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:50,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:50,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:51,031 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:51,032 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:51,032 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 [2018-10-27 06:09:51,033 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:51,033 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:51,033 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:51,034 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:51,034 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:51,034 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:51,035 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:51,041 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:51,055 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:09:51,057 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:09:51,058 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:51,058 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:51,058 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:51,059 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-10-27 06:09:51,059 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:51,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:51,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:51,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 06:09:51,123 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 [2018-10-27 06:09:51,123 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 44 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-10-27 06:09:51,148 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 44 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 76 states and 98 transitions. Complement of second has 6 states. [2018-10-27 06:09:51,150 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 [2018-10-27 06:09:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:09:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-10-27 06:09:51,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 9 letters. [2018-10-27 06:09:51,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:51,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 13 letters. Loop has 9 letters. [2018-10-27 06:09:51,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:51,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 18 letters. [2018-10-27 06:09:51,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:51,152 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 98 transitions. [2018-10-27 06:09:51,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:09:51,156 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 53 states and 68 transitions. [2018-10-27 06:09:51,156 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-10-27 06:09:51,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-10-27 06:09:51,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 68 transitions. [2018-10-27 06:09:51,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:51,157 INFO L705 BuchiCegarLoop]: Abstraction has 53 states and 68 transitions. [2018-10-27 06:09:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 68 transitions. [2018-10-27 06:09:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-10-27 06:09:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-27 06:09:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2018-10-27 06:09:51,163 INFO L728 BuchiCegarLoop]: Abstraction has 49 states and 64 transitions. [2018-10-27 06:09:51,163 INFO L608 BuchiCegarLoop]: Abstraction has 49 states and 64 transitions. [2018-10-27 06:09:51,163 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:09:51,164 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 64 transitions. [2018-10-27 06:09:51,167 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:09:51,167 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:51,167 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:51,168 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:09:51,168 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:09:51,168 INFO L793 eck$LassoCheckResult]: Stem: 423#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 418#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 419#L19-3 assume true; 421#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 443#L21-3 assume true; 427#L21-1 [2018-10-27 06:09:51,168 INFO L795 eck$LassoCheckResult]: Loop: 427#L21-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + 1; 426#L21-3 assume true; 427#L21-1 [2018-10-27 06:09:51,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:51,169 INFO L82 PathProgramCache]: Analyzing trace with hash 28694887, now seen corresponding path program 1 times [2018-10-27 06:09:51,169 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:51,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:51,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,170 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:51,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:51,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1659, now seen corresponding path program 1 times [2018-10-27 06:09:51,178 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:51,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:51,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:51,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:51,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1805983329, now seen corresponding path program 1 times [2018-10-27 06:09:51,187 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:51,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:51,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:51,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,220 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:51,220 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:51,221 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:51,221 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:51,221 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:51,221 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:51,221 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:51,221 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:51,221 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-10-27 06:09:51,221 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:51,222 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:51,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:51,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:51,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:51,265 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:51,265 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:51,268 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:51,268 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:51,289 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:51,289 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:51,294 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:51,294 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:51,315 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:51,315 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:51,320 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:51,320 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:51,345 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:51,345 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:51,594 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:51,595 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:51,596 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:51,596 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:51,596 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:51,596 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:51,596 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:51,596 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:51,596 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:51,596 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-10-27 06:09:51,597 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:51,597 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:51,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:51,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:51,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:51,634 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:51,634 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:51,635 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 [2018-10-27 06:09:51,635 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:51,635 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:51,636 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:51,636 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:51,637 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:09:51,637 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:09:51,645 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:09:51,645 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 [2018-10-27 06:09:51,646 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:51,646 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:51,646 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:51,646 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:51,650 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:09:51,650 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:09:51,652 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:09:51,664 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 [2018-10-27 06:09:51,672 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:51,672 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:51,672 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:51,672 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:51,673 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:51,673 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:51,673 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:51,675 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:51,679 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:09:51,680 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:09:51,680 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:51,680 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:51,680 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:51,680 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~j~0 + 2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2018-10-27 06:09:51,686 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:51,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:51,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:51,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:51,732 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 [2018-10-27 06:09:51,732 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 49 states and 64 transitions. cyclomatic complexity: 20 Second operand 3 states. [2018-10-27 06:09:51,743 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 49 states and 64 transitions. cyclomatic complexity: 20. Second operand 3 states. Result 84 states and 104 transitions. Complement of second has 5 states. [2018-10-27 06:09:51,747 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 [2018-10-27 06:09:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:09:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2018-10-27 06:09:51,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 2 letters. [2018-10-27 06:09:51,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:51,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 2 letters. [2018-10-27 06:09:51,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:51,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 4 letters. [2018-10-27 06:09:51,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:51,748 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 104 transitions. [2018-10-27 06:09:51,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:09:51,753 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 74 states and 93 transitions. [2018-10-27 06:09:51,753 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-10-27 06:09:51,753 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-10-27 06:09:51,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 93 transitions. [2018-10-27 06:09:51,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:51,754 INFO L705 BuchiCegarLoop]: Abstraction has 74 states and 93 transitions. [2018-10-27 06:09:51,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states and 93 transitions. [2018-10-27 06:09:51,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2018-10-27 06:09:51,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-27 06:09:51,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2018-10-27 06:09:51,760 INFO L728 BuchiCegarLoop]: Abstraction has 67 states and 86 transitions. [2018-10-27 06:09:51,760 INFO L608 BuchiCegarLoop]: Abstraction has 67 states and 86 transitions. [2018-10-27 06:09:51,760 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-10-27 06:09:51,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 86 transitions. [2018-10-27 06:09:51,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:09:51,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:51,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:51,761 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2018-10-27 06:09:51,762 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:09:51,762 INFO L793 eck$LassoCheckResult]: Stem: 599#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 593#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 594#L19-3 assume true; 595#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 659#L21-3 assume true; 658#L21-1 assume !(main_~j~0 <= main_~i~0); 620#L21-4 main_~i~0 := main_~i~0 + 1; 616#L19-3 assume true; 614#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 611#L21-3 assume true; 609#L21-1 [2018-10-27 06:09:51,762 INFO L795 eck$LassoCheckResult]: Loop: 609#L21-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + 1; 610#L21-3 assume true; 609#L21-1 [2018-10-27 06:09:51,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:51,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1007505731, now seen corresponding path program 2 times [2018-10-27 06:09:51,762 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:51,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:51,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:51,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:51,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1659, now seen corresponding path program 2 times [2018-10-27 06:09:51,773 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:51,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:51,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:51,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:51,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1845365193, now seen corresponding path program 3 times [2018-10-27 06:09:51,783 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:51,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:51,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,784 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:51,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:51,856 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:51,856 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:51,856 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:51,856 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:51,856 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:51,856 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:51,856 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:51,857 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:51,857 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-10-27 06:09:51,857 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:51,857 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:51,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:51,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:51,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:51,931 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:51,932 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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) [2018-10-27 06:09:51,944 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:51,944 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47331a55-1558-4aaf-b63b-fd7c900991bd/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 [2018-10-27 06:09:51,978 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:51,978 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:52,244 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:52,246 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:52,246 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:52,246 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:52,246 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:52,246 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:52,247 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:52,247 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:52,247 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:52,247 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-10-27 06:09:52,247 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:52,247 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:52,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:52,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:52,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:52,307 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:52,307 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:52,307 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 [2018-10-27 06:09:52,308 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:52,308 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:52,308 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:52,308 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:52,309 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:52,309 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:52,309 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:52,316 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:52,318 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:09:52,318 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:09:52,318 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:52,318 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:52,318 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:52,318 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~j~0 + 2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2018-10-27 06:09:52,321 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:52,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:52,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:52,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:52,371 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 [2018-10-27 06:09:52,372 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27 Second operand 3 states. [2018-10-27 06:09:52,393 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27. Second operand 3 states. Result 84 states and 105 transitions. Complement of second has 5 states. [2018-10-27 06:09:52,396 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 [2018-10-27 06:09:52,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:09:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2018-10-27 06:09:52,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 2 letters. [2018-10-27 06:09:52,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:52,397 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:09:52,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:52,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:52,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:52,431 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:09:52,431 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27 Second operand 3 states. [2018-10-27 06:09:52,471 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27. Second operand 3 states. Result 82 states and 102 transitions. Complement of second has 7 states. [2018-10-27 06:09:52,475 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 [2018-10-27 06:09:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:09:52,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-10-27 06:09:52,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2018-10-27 06:09:52,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:52,476 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:09:52,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:52,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:52,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:52,529 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:09:52,529 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27 Second operand 3 states. [2018-10-27 06:09:52,546 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27. Second operand 3 states. Result 90 states and 116 transitions. Complement of second has 6 states. [2018-10-27 06:09:52,547 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 [2018-10-27 06:09:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:09:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-10-27 06:09:52,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2018-10-27 06:09:52,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:52,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2018-10-27 06:09:52,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:52,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2018-10-27 06:09:52,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:52,549 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 116 transitions. [2018-10-27 06:09:52,551 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:09:52,551 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 0 states and 0 transitions. [2018-10-27 06:09:52,551 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:09:52,551 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:09:52,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:09:52,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:09:52,552 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:52,552 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:52,552 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:52,552 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-10-27 06:09:52,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:09:52,552 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:09:52,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:09:52,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:09:52 BoogieIcfgContainer [2018-10-27 06:09:52,562 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:09:52,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:09:52,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:09:52,562 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:09:52,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:47" (3/4) ... [2018-10-27 06:09:52,569 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:09:52,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:09:52,570 INFO L168 Benchmark]: Toolchain (without parser) took 5661.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 953.1 MB in the beginning and 1.1 GB in the end (delta: -137.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:52,571 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:52,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.55 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:52,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.90 ms. Allocated memory is still 1.0 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:52,572 INFO L168 Benchmark]: Boogie Preprocessor took 24.85 ms. Allocated memory is still 1.0 GB. Free memory was 942.3 MB in the beginning and 939.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:52,573 INFO L168 Benchmark]: RCFGBuilder took 344.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 939.6 MB in the beginning and 1.2 GB in the end (delta: -214.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:52,573 INFO L168 Benchmark]: BuchiAutomizer took 5055.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:52,574 INFO L168 Benchmark]: Witness Printer took 7.37 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. [2018-10-27 06:09:52,577 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 192.55 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.90 ms. Allocated memory is still 1.0 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.85 ms. Allocated memory is still 1.0 GB. Free memory was 942.3 MB in the beginning and 939.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 344.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 939.6 MB in the beginning and 1.2 GB in the end (delta: -214.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5055.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 11.5 GB. * Witness Printer took 7.37 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 (1 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 5 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 7 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One deterministic module has affine ranking function -2 * j + 2 * i + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * j + 2 * i + 1 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.0s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 3.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 67 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 6/8 HoareTripleCheckerStatistics: 54 SDtfs, 54 SDslu, 20 SDs, 0 SdLazy, 66 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax184 hnf98 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf93 smp97 dnf100 smp100 tf109 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...