./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/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 e334a37fa3ef1f2b757af8cdc97575f5cde09f8b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 22:31:49,704 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 22:31:49,705 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 22:31:49,711 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 22:31:49,711 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 22:31:49,712 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 22:31:49,712 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 22:31:49,713 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 22:31:49,714 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 22:31:49,715 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 22:31:49,715 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 22:31:49,715 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 22:31:49,716 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 22:31:49,716 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 22:31:49,717 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 22:31:49,717 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 22:31:49,718 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 22:31:49,719 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 22:31:49,720 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 22:31:49,721 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 22:31:49,721 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 22:31:49,722 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 22:31:49,723 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 22:31:49,723 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 22:31:49,724 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 22:31:49,724 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 22:31:49,725 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 22:31:49,725 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 22:31:49,726 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 22:31:49,726 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 22:31:49,726 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 22:31:49,727 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 22:31:49,727 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 22:31:49,727 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 22:31:49,728 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 22:31:49,728 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 22:31:49,728 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-08 22:31:49,736 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 22:31:49,736 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 22:31:49,737 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 22:31:49,737 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 22:31:49,737 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 22:31:49,737 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 22:31:49,738 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 22:31:49,738 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 22:31:49,738 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 22:31:49,738 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 22:31:49,738 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 22:31:49,738 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 22:31:49,738 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 22:31:49,738 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 22:31:49,739 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 22:31:49,739 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 22:31:49,739 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 22:31:49,739 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 22:31:49,739 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 22:31:49,739 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 22:31:49,739 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 22:31:49,739 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 22:31:49,740 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 22:31:49,740 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 22:31:49,740 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 22:31:49,740 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 22:31:49,740 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 22:31:49,740 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 22:31:49,741 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 22:31:49,741 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_37078fb7-a603-4570-86be-5495410be8d8/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 -> e334a37fa3ef1f2b757af8cdc97575f5cde09f8b [2018-12-08 22:31:49,759 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 22:31:49,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 22:31:49,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 22:31:49,771 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 22:31:49,771 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 22:31:49,771 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-12-08 22:31:49,812 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/data/3822503cd/a9af06928c964a82aa8efa860689defc/FLAGfeee92d65 [2018-12-08 22:31:50,213 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 22:31:50,214 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-12-08 22:31:50,217 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/data/3822503cd/a9af06928c964a82aa8efa860689defc/FLAGfeee92d65 [2018-12-08 22:31:50,225 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/data/3822503cd/a9af06928c964a82aa8efa860689defc [2018-12-08 22:31:50,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 22:31:50,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 22:31:50,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 22:31:50,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 22:31:50,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 22:31:50,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:31:50" (1/1) ... [2018-12-08 22:31:50,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42aa496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50, skipping insertion in model container [2018-12-08 22:31:50,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:31:50" (1/1) ... [2018-12-08 22:31:50,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 22:31:50,245 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 22:31:50,325 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 22:31:50,328 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 22:31:50,336 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 22:31:50,344 INFO L195 MainTranslator]: Completed translation [2018-12-08 22:31:50,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50 WrapperNode [2018-12-08 22:31:50,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 22:31:50,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 22:31:50,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 22:31:50,345 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 22:31:50,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50" (1/1) ... [2018-12-08 22:31:50,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50" (1/1) ... [2018-12-08 22:31:50,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 22:31:50,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 22:31:50,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 22:31:50,363 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 22:31:50,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50" (1/1) ... [2018-12-08 22:31:50,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50" (1/1) ... [2018-12-08 22:31:50,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50" (1/1) ... [2018-12-08 22:31:50,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50" (1/1) ... [2018-12-08 22:31:50,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50" (1/1) ... [2018-12-08 22:31:50,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50" (1/1) ... [2018-12-08 22:31:50,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50" (1/1) ... [2018-12-08 22:31:50,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 22:31:50,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 22:31:50,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 22:31:50,375 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 22:31:50,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 22:31:50,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 22:31:50,507 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 22:31:50,507 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-08 22:31:50,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:31:50 BoogieIcfgContainer [2018-12-08 22:31:50,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 22:31:50,508 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 22:31:50,508 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 22:31:50,510 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 22:31:50,511 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 22:31:50,511 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 10:31:50" (1/3) ... [2018-12-08 22:31:50,512 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c452592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 10:31:50, skipping insertion in model container [2018-12-08 22:31:50,512 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 22:31:50,512 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:31:50" (2/3) ... [2018-12-08 22:31:50,512 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c452592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 10:31:50, skipping insertion in model container [2018-12-08 22:31:50,512 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 22:31:50,512 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:31:50" (3/3) ... [2018-12-08 22:31:50,513 INFO L375 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-12-08 22:31:50,547 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 22:31:50,547 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 22:31:50,548 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 22:31:50,548 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 22:31:50,548 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 22:31:50,548 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 22:31:50,548 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 22:31:50,548 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 22:31:50,548 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 22:31:50,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-12-08 22:31:50,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 22:31:50,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 22:31:50,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 22:31:50,573 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 22:31:50,573 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 22:31:50,574 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 22:31:50,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-12-08 22:31:50,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 22:31:50,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 22:31:50,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 22:31:50,575 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 22:31:50,575 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 22:31:50,579 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 5#L18-2true [2018-12-08 22:31:50,580 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 11#L19true assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 7#L19-2true main_~y~0 := main_~y~0 - 1; 5#L18-2true [2018-12-08 22:31:50,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:50,583 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-08 22:31:50,584 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:50,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:50,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:50,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:31:50,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:50,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:50,643 INFO L82 PathProgramCache]: Analyzing trace with hash 40299, now seen corresponding path program 1 times [2018-12-08 22:31:50,644 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:50,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:50,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:50,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:31:50,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:50,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:50,651 INFO L82 PathProgramCache]: Analyzing trace with hash 963820, now seen corresponding path program 1 times [2018-12-08 22:31:50,651 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:50,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:50,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:50,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:31:50,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:50,690 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:50,691 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:50,691 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:50,691 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:50,691 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 22:31:50,691 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:50,691 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:50,691 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:50,691 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-08 22:31:50,691 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:50,692 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:50,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:50,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:50,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:50,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:50,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:50,770 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:50,771 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:50,774 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:50,774 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:50,793 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:50,793 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:50,796 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:50,796 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:50,810 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:50,810 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:50,813 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:50,813 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:50,827 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:50,827 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:50,830 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:50,830 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:50,832 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:50,832 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:50,856 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:50,856 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:50,872 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 22:31:50,872 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:50,889 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 22:31:50,890 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:50,890 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:50,890 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:50,890 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:50,890 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 22:31:50,890 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:50,890 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:50,890 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:50,890 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-08 22:31:50,890 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:50,890 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:50,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:50,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:50,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:50,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:50,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:50,939 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:50,942 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 22:31:50,943 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:50,944 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:50,945 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:50,945 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:50,945 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:50,947 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 22:31:50,947 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 22:31:50,951 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 22:31:50,951 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:50,952 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:50,952 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:50,952 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:50,952 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:50,953 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 22:31:50,953 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 22:31:50,957 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 22:31:50,958 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:50,958 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:50,958 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:50,958 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:50,959 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:50,959 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:50,959 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 22:31:50,959 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:50,960 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 22:31:50,960 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:50,960 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:50,961 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:50,961 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:50,961 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:50,961 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:50,961 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 22:31:50,961 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:50,962 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 22:31:50,962 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:50,963 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:50,963 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:50,963 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:50,963 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:50,963 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:50,963 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 22:31:50,964 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:50,966 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 22:31:50,968 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 22:31:50,969 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 22:31:50,970 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 22:31:50,970 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 22:31:50,970 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 22:31:50,970 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-12-08 22:31:50,971 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 22:31:50,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:50,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:51,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:51,028 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 [2018-12-08 22:31:51,028 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2018-12-08 22:31:51,065 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 37 states and 54 transitions. Complement of second has 8 states. [2018-12-08 22:31:51,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 22:31:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 22:31:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2018-12-08 22:31:51,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 3 letters. [2018-12-08 22:31:51,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:51,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 4 letters. Loop has 3 letters. [2018-12-08 22:31:51,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:51,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 6 letters. [2018-12-08 22:31:51,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:51,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 54 transitions. [2018-12-08 22:31:51,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 22:31:51,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 14 states and 20 transitions. [2018-12-08 22:31:51,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-12-08 22:31:51,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-12-08 22:31:51,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2018-12-08 22:31:51,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 22:31:51,075 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-12-08 22:31:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2018-12-08 22:31:51,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-08 22:31:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-08 22:31:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2018-12-08 22:31:51,091 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-12-08 22:31:51,091 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-12-08 22:31:51,091 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 22:31:51,091 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2018-12-08 22:31:51,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 22:31:51,091 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 22:31:51,091 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 22:31:51,092 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-08 22:31:51,092 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-08 22:31:51,092 INFO L794 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 93#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 91#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 98#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2018-12-08 22:31:51,092 INFO L796 eck$LassoCheckResult]: Loop: 99#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2018-12-08 22:31:51,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:51,092 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2018-12-08 22:31:51,092 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:51,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:51,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:31:51,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:51,099 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2018-12-08 22:31:51,099 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:51,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:51,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:31:51,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash 29863779, now seen corresponding path program 2 times [2018-12-08 22:31:51,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:51,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:51,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:31:51,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,125 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:51,125 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:51,125 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:51,125 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:51,125 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 22:31:51,125 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,126 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:51,126 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:51,126 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 22:31:51,126 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:51,126 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:51,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,158 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:51,158 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,159 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:51,159 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:51,174 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:51,174 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,176 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:51,177 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:51,191 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:51,191 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,194 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:51,194 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:51,201 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:51,201 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,216 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:51,216 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,233 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 22:31:51,233 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:51,337 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 22:31:51,338 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:51,339 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:51,339 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:51,339 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:51,339 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 22:31:51,339 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,339 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:51,339 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:51,339 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 22:31:51,339 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:51,339 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:51,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,384 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:51,384 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 22:31:51,384 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:51,385 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:51,385 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:51,385 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:51,386 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:51,387 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 22:31:51,387 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 22:31:51,390 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 22:31:51,391 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:51,391 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:51,391 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:51,391 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:51,391 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:51,393 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 22:31:51,393 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 22:31:51,397 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 22:31:51,397 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:51,397 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:51,398 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:51,398 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:51,398 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-08 22:31:51,398 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:51,399 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-08 22:31:51,399 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:51,402 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 22:31:51,403 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:51,403 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:51,403 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:51,403 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:51,404 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:51,404 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:51,404 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 22:31:51,404 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:51,407 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 22:31:51,410 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 22:31:51,410 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 22:31:51,410 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 22:31:51,411 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 22:31:51,411 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 22:31:51,411 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-12-08 22:31:51,411 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 22:31:51,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:51,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:51,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:51,430 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-08 22:31:51,430 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 2 states. [2018-12-08 22:31:51,447 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 2 states. Result 25 states and 39 transitions. Complement of second has 6 states. [2018-12-08 22:31:51,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 22:31:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-08 22:31:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-12-08 22:31:51,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 1 letters. [2018-12-08 22:31:51,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:51,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 1 letters. [2018-12-08 22:31:51,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:51,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-08 22:31:51,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:51,449 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 39 transitions. [2018-12-08 22:31:51,450 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 22:31:51,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 26 transitions. [2018-12-08 22:31:51,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-08 22:31:51,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-08 22:31:51,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2018-12-08 22:31:51,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 22:31:51,451 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-12-08 22:31:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2018-12-08 22:31:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-12-08 22:31:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-08 22:31:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2018-12-08 22:31:51,452 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2018-12-08 22:31:51,452 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2018-12-08 22:31:51,452 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 22:31:51,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 24 transitions. [2018-12-08 22:31:51,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 22:31:51,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 22:31:51,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 22:31:51,454 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-12-08 22:31:51,454 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-12-08 22:31:51,454 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 163#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 168#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 177#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 176#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2018-12-08 22:31:51,454 INFO L796 eck$LassoCheckResult]: Loop: 169#L20-3 main_~x~0 := main_~x~0 - 1; 170#L19-2 main_~y~0 := main_~y~0 - 1; 164#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 165#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 173#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2018-12-08 22:31:51,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:51,455 INFO L82 PathProgramCache]: Analyzing trace with hash 29863777, now seen corresponding path program 1 times [2018-12-08 22:31:51,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:51,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:51,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,456 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:51,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:51,462 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 1 times [2018-12-08 22:31:51,462 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:51,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:51,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:31:51,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:51,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267692, now seen corresponding path program 1 times [2018-12-08 22:31:51,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:51,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:51,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:31:51,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,517 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:51,518 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:51,518 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:51,518 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:51,518 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 22:31:51,518 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,518 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:51,518 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:51,518 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 22:31:51,518 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:51,518 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:51,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,581 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:51,581 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,584 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:51,584 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,600 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 22:31:51,600 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:51,680 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 22:31:51,681 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:51,681 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:51,681 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:51,681 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:51,681 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 22:31:51,682 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,682 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:51,682 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:51,682 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 22:31:51,682 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:51,682 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:51,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,756 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:51,756 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 22:31:51,756 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:51,757 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:51,757 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:51,757 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:51,757 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-08 22:31:51,757 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:51,758 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-08 22:31:51,758 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:51,761 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 22:31:51,763 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 22:31:51,763 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 22:31:51,763 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 22:31:51,763 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 22:31:51,763 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 22:31:51,763 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-08 22:31:51,764 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 22:31:51,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:51,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:51,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:51,799 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-08 22:31:51,799 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11 Second operand 5 states. [2018-12-08 22:31:51,812 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 46 states and 68 transitions. Complement of second has 8 states. [2018-12-08 22:31:51,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 22:31:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-08 22:31:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2018-12-08 22:31:51,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 5 letters. [2018-12-08 22:31:51,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:51,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 5 letters. [2018-12-08 22:31:51,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:51,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 10 letters. [2018-12-08 22:31:51,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:51,814 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2018-12-08 22:31:51,815 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 22:31:51,815 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 32 states and 46 transitions. [2018-12-08 22:31:51,815 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-12-08 22:31:51,815 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-12-08 22:31:51,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 46 transitions. [2018-12-08 22:31:51,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 22:31:51,816 INFO L705 BuchiCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-12-08 22:31:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 46 transitions. [2018-12-08 22:31:51,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-12-08 22:31:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-08 22:31:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2018-12-08 22:31:51,818 INFO L728 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2018-12-08 22:31:51,818 INFO L608 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2018-12-08 22:31:51,818 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 22:31:51,818 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2018-12-08 22:31:51,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 22:31:51,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 22:31:51,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 22:31:51,819 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2018-12-08 22:31:51,819 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-12-08 22:31:51,819 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 280#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 281#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 295#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 288#L20-3 main_~x~0 := main_~x~0 - 1; 289#L19-2 main_~y~0 := main_~y~0 - 1; 292#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 305#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 304#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 302#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2018-12-08 22:31:51,819 INFO L796 eck$LassoCheckResult]: Loop: 298#L20-3 main_~x~0 := main_~x~0 - 1; 290#L19-2 main_~y~0 := main_~y~0 - 1; 291#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 299#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 294#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2018-12-08 22:31:51,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:51,819 INFO L82 PathProgramCache]: Analyzing trace with hash -363863338, now seen corresponding path program 2 times [2018-12-08 22:31:51,819 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:51,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:51,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:31:51,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 22:31:51,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 22:31:51,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 22:31:51,845 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-08 22:31:51,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:51,845 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 2 times [2018-12-08 22:31:51,845 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:51,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:51,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:51,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:51,873 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:51,873 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:51,873 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:51,873 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:51,873 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 22:31:51,874 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,874 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:51,874 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:51,874 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-08 22:31:51,874 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:51,874 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:51,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:51,933 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:51,933 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,935 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:51,935 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:51,938 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:51,938 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=7} Honda state: {ULTIMATE.start_main_#t~nondet1=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,956 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:51,956 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:51,972 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 22:31:51,972 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:52,002 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 22:31:52,003 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:52,003 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:52,004 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:52,004 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:52,004 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 22:31:52,004 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,004 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:52,004 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:52,004 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-08 22:31:52,004 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:52,004 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:52,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,067 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:52,068 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 22:31:52,068 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:52,068 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:52,068 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:52,069 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:52,069 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-08 22:31:52,069 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:52,069 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-08 22:31:52,069 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:52,070 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 22:31:52,071 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:52,071 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:52,071 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:52,071 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:52,071 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:52,071 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:52,072 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 22:31:52,072 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:52,073 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 22:31:52,074 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 22:31:52,074 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 22:31:52,074 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 22:31:52,074 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 22:31:52,074 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 22:31:52,074 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-08 22:31:52,074 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 22:31:52,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:52,107 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-08 22:31:52,107 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20 Second operand 4 states. [2018-12-08 22:31:52,121 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 80 states and 118 transitions. Complement of second has 7 states. [2018-12-08 22:31:52,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 22:31:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 22:31:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2018-12-08 22:31:52,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 5 letters. [2018-12-08 22:31:52,123 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:52,123 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 15 letters. Loop has 5 letters. [2018-12-08 22:31:52,123 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:52,123 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 10 letters. [2018-12-08 22:31:52,123 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:52,123 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 118 transitions. [2018-12-08 22:31:52,125 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-12-08 22:31:52,126 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 54 states and 78 transitions. [2018-12-08 22:31:52,126 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-12-08 22:31:52,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-12-08 22:31:52,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 78 transitions. [2018-12-08 22:31:52,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 22:31:52,126 INFO L705 BuchiCegarLoop]: Abstraction has 54 states and 78 transitions. [2018-12-08 22:31:52,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 78 transitions. [2018-12-08 22:31:52,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2018-12-08 22:31:52,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 22:31:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2018-12-08 22:31:52,129 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2018-12-08 22:31:52,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 22:31:52,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 22:31:52,132 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand 4 states. [2018-12-08 22:31:52,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 22:31:52,144 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2018-12-08 22:31:52,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 22:31:52,145 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 53 transitions. [2018-12-08 22:31:52,145 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-12-08 22:31:52,146 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 31 states and 46 transitions. [2018-12-08 22:31:52,146 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-12-08 22:31:52,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-12-08 22:31:52,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 46 transitions. [2018-12-08 22:31:52,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 22:31:52,146 INFO L705 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2018-12-08 22:31:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 46 transitions. [2018-12-08 22:31:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-12-08 22:31:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-08 22:31:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2018-12-08 22:31:52,148 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2018-12-08 22:31:52,148 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2018-12-08 22:31:52,148 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 22:31:52,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 46 transitions. [2018-12-08 22:31:52,149 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-12-08 22:31:52,149 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 22:31:52,149 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 22:31:52,150 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-12-08 22:31:52,150 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-08 22:31:52,150 INFO L794 eck$LassoCheckResult]: Stem: 542#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 538#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 539#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 551#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 559#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 546#L20-3 main_~x~0 := main_~x~0 - 1; 547#L19-2 main_~y~0 := main_~y~0 - 1; 567#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 565#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 549#L20-2 [2018-12-08 22:31:52,150 INFO L796 eck$LassoCheckResult]: Loop: 549#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 549#L20-2 [2018-12-08 22:31:52,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1840994920, now seen corresponding path program 3 times [2018-12-08 22:31:52,150 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:52,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:52,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,151 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:52,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,158 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2018-12-08 22:31:52,158 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:52,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:52,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,159 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:52,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267694, now seen corresponding path program 4 times [2018-12-08 22:31:52,162 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:52,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:52,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:52,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,193 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:52,193 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:52,193 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:52,193 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:52,193 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 22:31:52,193 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,193 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:52,193 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:52,193 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-08 22:31:52,193 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:52,193 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:52,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,224 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:52,224 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,237 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:52,237 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,253 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 22:31:52,253 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:52,349 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 22:31:52,350 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:52,350 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:52,350 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:52,350 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:52,350 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 22:31:52,350 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,350 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:52,350 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:52,350 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-08 22:31:52,350 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:52,350 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:52,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,386 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:52,386 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 22:31:52,387 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:52,387 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:52,387 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:52,387 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:52,387 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:52,387 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:52,387 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 22:31:52,387 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:52,389 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 22:31:52,390 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 22:31:52,390 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 22:31:52,390 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 22:31:52,390 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 22:31:52,390 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 22:31:52,390 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-12-08 22:31:52,390 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 22:31:52,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:52,407 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-08 22:31:52,408 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2018-12-08 22:31:52,413 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2018-12-08 22:31:52,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 22:31:52,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-08 22:31:52,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-08 22:31:52,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2018-12-08 22:31:52,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:52,414 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 22:31:52,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:52,431 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-08 22:31:52,431 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2018-12-08 22:31:52,436 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2018-12-08 22:31:52,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 22:31:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-08 22:31:52,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-08 22:31:52,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2018-12-08 22:31:52,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:52,436 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 22:31:52,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:52,451 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-08 22:31:52,451 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2018-12-08 22:31:52,456 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 38 states and 54 transitions. Complement of second has 4 states. [2018-12-08 22:31:52,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 22:31:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-08 22:31:52,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-12-08 22:31:52,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 1 letters. [2018-12-08 22:31:52,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:52,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2018-12-08 22:31:52,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:52,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2018-12-08 22:31:52,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:52,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 54 transitions. [2018-12-08 22:31:52,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 22:31:52,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 27 states and 37 transitions. [2018-12-08 22:31:52,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-08 22:31:52,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 22:31:52,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2018-12-08 22:31:52,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 22:31:52,458 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 37 transitions. [2018-12-08 22:31:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2018-12-08 22:31:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2018-12-08 22:31:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-08 22:31:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2018-12-08 22:31:52,459 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2018-12-08 22:31:52,459 INFO L608 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2018-12-08 22:31:52,459 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-08 22:31:52,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2018-12-08 22:31:52,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 22:31:52,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 22:31:52,460 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 22:31:52,460 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1] [2018-12-08 22:31:52,460 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 22:31:52,460 INFO L794 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 799#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 806#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 803#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 804#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 802#L20-3 main_~x~0 := main_~x~0 - 1; 801#L19-2 main_~y~0 := main_~y~0 - 1; 796#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 797#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 807#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 810#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 813#L20-3 main_~x~0 := main_~x~0 - 1; 812#L19-2 main_~y~0 := main_~y~0 - 1; 811#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 808#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2018-12-08 22:31:52,460 INFO L796 eck$LassoCheckResult]: Loop: 800#L19-2 main_~y~0 := main_~y~0 - 1; 794#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 795#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2018-12-08 22:31:52,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1970756676, now seen corresponding path program 1 times [2018-12-08 22:31:52,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:52,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:52,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:52,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,467 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 2 times [2018-12-08 22:31:52,467 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:52,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:52,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:31:52,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1390830772, now seen corresponding path program 2 times [2018-12-08 22:31:52,470 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:52,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:52,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,470 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:52,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-08 22:31:52,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 22:31:52,487 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 22:31:52,495 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 22:31:52,501 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 22:31:52,501 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 22:31:52,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-08 22:31:52,520 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 22:31:52,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-12-08 22:31:52,545 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:52,545 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:52,545 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:52,545 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:52,545 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 22:31:52,545 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,546 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:52,546 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:52,546 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-08 22:31:52,546 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:52,546 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:52,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,588 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:52,588 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,590 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:52,590 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:52,605 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:52,605 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,608 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:52,608 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:52,622 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:52,622 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,625 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:52,625 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:52,627 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:52,627 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,642 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:52,642 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,658 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 22:31:52,658 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:52,687 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 22:31:52,689 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:52,689 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:52,689 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:52,689 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:52,689 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 22:31:52,689 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,689 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:52,689 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:52,689 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-08 22:31:52,690 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:52,690 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:52,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,732 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:52,732 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 22:31:52,732 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:52,733 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:52,733 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:52,733 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:52,733 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:52,733 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 22:31:52,734 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 22:31:52,735 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 22:31:52,735 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:52,735 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:52,735 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:52,736 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:52,736 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:52,736 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:52,736 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 22:31:52,736 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:52,736 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 22:31:52,736 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:52,737 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:52,737 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:52,737 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:52,737 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:52,737 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:52,737 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 22:31:52,737 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:52,738 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 22:31:52,739 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 22:31:52,739 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 22:31:52,739 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 22:31:52,739 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 22:31:52,739 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 22:31:52,739 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-08 22:31:52,739 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 22:31:52,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:52,777 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-08 22:31:52,777 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-12-08 22:31:52,786 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 63 states and 85 transitions. Complement of second has 7 states. [2018-12-08 22:31:52,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 22:31:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 22:31:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-08 22:31:52,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2018-12-08 22:31:52,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:52,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 18 letters. Loop has 3 letters. [2018-12-08 22:31:52,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:52,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 6 letters. [2018-12-08 22:31:52,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:52,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2018-12-08 22:31:52,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 22:31:52,788 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 44 states and 59 transitions. [2018-12-08 22:31:52,788 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-08 22:31:52,789 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 22:31:52,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 59 transitions. [2018-12-08 22:31:52,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 22:31:52,789 INFO L705 BuchiCegarLoop]: Abstraction has 44 states and 59 transitions. [2018-12-08 22:31:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 59 transitions. [2018-12-08 22:31:52,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2018-12-08 22:31:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-08 22:31:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2018-12-08 22:31:52,790 INFO L728 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2018-12-08 22:31:52,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 22:31:52,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-08 22:31:52,790 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 5 states. [2018-12-08 22:31:52,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 22:31:52,802 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2018-12-08 22:31:52,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 22:31:52,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 68 transitions. [2018-12-08 22:31:52,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 22:31:52,803 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 45 states and 58 transitions. [2018-12-08 22:31:52,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-08 22:31:52,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 22:31:52,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 58 transitions. [2018-12-08 22:31:52,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 22:31:52,804 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 58 transitions. [2018-12-08 22:31:52,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 58 transitions. [2018-12-08 22:31:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2018-12-08 22:31:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 22:31:52,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2018-12-08 22:31:52,806 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2018-12-08 22:31:52,806 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2018-12-08 22:31:52,806 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-08 22:31:52,806 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 53 transitions. [2018-12-08 22:31:52,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 22:31:52,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 22:31:52,807 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 22:31:52,807 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1] [2018-12-08 22:31:52,807 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 22:31:52,808 INFO L794 eck$LassoCheckResult]: Stem: 1103#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1104#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1112#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1108#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1109#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1133#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1107#L20-3 main_~x~0 := main_~x~0 - 1; 1106#L19-2 main_~y~0 := main_~y~0 - 1; 1101#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1102#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1124#L19-2 main_~y~0 := main_~y~0 - 1; 1127#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1123#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1121#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1117#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1120#L20-3 main_~x~0 := main_~x~0 - 1; 1119#L19-2 main_~y~0 := main_~y~0 - 1; 1118#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1115#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2018-12-08 22:31:52,808 INFO L796 eck$LassoCheckResult]: Loop: 1105#L19-2 main_~y~0 := main_~y~0 - 1; 1099#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1100#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2018-12-08 22:31:52,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,808 INFO L82 PathProgramCache]: Analyzing trace with hash 715204654, now seen corresponding path program 3 times [2018-12-08 22:31:52,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:52,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:52,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:52,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,819 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 3 times [2018-12-08 22:31:52,819 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:52,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:52,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,820 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:52,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:52,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:52,822 INFO L82 PathProgramCache]: Analyzing trace with hash -670878974, now seen corresponding path program 4 times [2018-12-08 22:31:52,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:52,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:52,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:52,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-08 22:31:52,857 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 22:31:52,857 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 22:31:52,864 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 22:31:52,869 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 22:31:52,869 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 22:31:52,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-08 22:31:52,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 22:31:52,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-08 22:31:52,898 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:52,898 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:52,899 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:52,899 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:52,899 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 22:31:52,899 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,899 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:52,899 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:52,899 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-12-08 22:31:52,899 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:52,899 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:52,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:52,936 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:52,936 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,937 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:52,938 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:52,952 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:52,952 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,955 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:52,956 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:52,972 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 22:31:52,972 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:53,000 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 22:31:53,002 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:53,002 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:53,002 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:53,002 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:53,002 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 22:31:53,002 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:53,002 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:53,002 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:53,002 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-12-08 22:31:53,002 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:53,002 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:53,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,031 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:53,031 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 22:31:53,032 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 [2018-12-08 22:31:53,032 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:53,032 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:53,032 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:53,032 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:53,032 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:53,032 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 22:31:53,032 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:53,033 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 22:31:53,034 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 22:31:53,034 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 22:31:53,034 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 22:31:53,034 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 22:31:53,034 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 22:31:53,034 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-08 22:31:53,034 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 22:31:53,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:53,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:53,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:53,065 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-08 22:31:53,065 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2018-12-08 22:31:53,076 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 46 states and 61 transitions. Complement of second has 7 states. [2018-12-08 22:31:53,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 22:31:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 22:31:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-08 22:31:53,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 3 letters. [2018-12-08 22:31:53,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:53,077 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 22:31:53,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:53,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:53,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:53,100 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-08 22:31:53,100 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2018-12-08 22:31:53,116 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 74 states and 97 transitions. Complement of second has 9 states. [2018-12-08 22:31:53,116 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 [2018-12-08 22:31:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 22:31:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-12-08 22:31:53,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 3 letters. [2018-12-08 22:31:53,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:53,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 22 letters. Loop has 3 letters. [2018-12-08 22:31:53,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:53,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 6 letters. [2018-12-08 22:31:53,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:53,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 97 transitions. [2018-12-08 22:31:53,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 22:31:53,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 68 states and 89 transitions. [2018-12-08 22:31:53,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-08 22:31:53,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 22:31:53,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 89 transitions. [2018-12-08 22:31:53,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 22:31:53,118 INFO L705 BuchiCegarLoop]: Abstraction has 68 states and 89 transitions. [2018-12-08 22:31:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 89 transitions. [2018-12-08 22:31:53,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2018-12-08 22:31:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-08 22:31:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2018-12-08 22:31:53,120 INFO L728 BuchiCegarLoop]: Abstraction has 60 states and 80 transitions. [2018-12-08 22:31:53,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 22:31:53,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-08 22:31:53,121 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2018-12-08 22:31:53,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 22:31:53,138 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2018-12-08 22:31:53,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 22:31:53,138 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 149 states and 188 transitions. [2018-12-08 22:31:53,139 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 22:31:53,140 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 149 states to 107 states and 137 transitions. [2018-12-08 22:31:53,140 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-08 22:31:53,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 22:31:53,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 137 transitions. [2018-12-08 22:31:53,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 22:31:53,140 INFO L705 BuchiCegarLoop]: Abstraction has 107 states and 137 transitions. [2018-12-08 22:31:53,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 137 transitions. [2018-12-08 22:31:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 83. [2018-12-08 22:31:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-12-08 22:31:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2018-12-08 22:31:53,143 INFO L728 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2018-12-08 22:31:53,144 INFO L608 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2018-12-08 22:31:53,144 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-12-08 22:31:53,144 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 111 transitions. [2018-12-08 22:31:53,144 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 22:31:53,144 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 22:31:53,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 22:31:53,144 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1] [2018-12-08 22:31:53,145 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 22:31:53,145 INFO L794 eck$LassoCheckResult]: Stem: 1705#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1706#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1719#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1715#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1716#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1754#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1753#L20-3 main_~x~0 := main_~x~0 - 1; 1752#L19-2 main_~y~0 := main_~y~0 - 1; 1750#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1751#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1742#L19-2 main_~y~0 := main_~y~0 - 1; 1741#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1738#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1735#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1732#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1734#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1724#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1727#L20-3 main_~x~0 := main_~x~0 - 1; 1726#L19-2 main_~y~0 := main_~y~0 - 1; 1725#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1722#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2018-12-08 22:31:53,145 INFO L796 eck$LassoCheckResult]: Loop: 1713#L19-2 main_~y~0 := main_~y~0 - 1; 1707#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1708#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2018-12-08 22:31:53,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:53,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1768639598, now seen corresponding path program 5 times [2018-12-08 22:31:53,145 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:53,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:53,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:53,146 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:53,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:53,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:53,153 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 4 times [2018-12-08 22:31:53,153 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:53,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:53,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:53,154 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:53,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:53,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:53,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1116494142, now seen corresponding path program 6 times [2018-12-08 22:31:53,156 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 22:31:53,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 22:31:53,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:53,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 22:31:53,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:31:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 22:31:53,176 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:53,177 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:53,177 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:53,177 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:53,177 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 22:31:53,177 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:53,177 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:53,177 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:53,177 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration8_Loop [2018-12-08 22:31:53,177 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:53,177 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:53,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,206 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:53,206 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:53,207 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:53,207 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:53,222 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 22:31:53,222 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:53,225 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 22:31:53,225 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_37078fb7-a603-4570-86be-5495410be8d8/bin-2019/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:53,241 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 22:31:53,241 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 22:31:53,270 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 22:31:53,271 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 22:31:53,271 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 22:31:53,271 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 22:31:53,271 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 22:31:53,271 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 22:31:53,271 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 22:31:53,271 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 22:31:53,271 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 22:31:53,271 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration8_Loop [2018-12-08 22:31:53,271 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 22:31:53,272 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 22:31:53,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 22:31:53,301 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 22:31:53,301 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 22:31:53,302 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:53,302 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:53,302 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:53,302 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:53,302 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:53,303 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 22:31:53,303 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 22:31:53,305 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 22:31:53,305 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 22:31:53,306 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 22:31:53,306 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 22:31:53,306 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 22:31:53,306 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 22:31:53,306 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 22:31:53,306 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 22:31:53,307 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 22:31:53,308 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 22:31:53,309 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 22:31:53,309 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 22:31:53,309 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 22:31:53,309 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 22:31:53,309 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 22:31:53,309 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-08 22:31:53,310 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 22:31:53,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:53,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:53,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:53,349 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-08 22:31:53,349 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2018-12-08 22:31:53,359 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 101 states and 134 transitions. Complement of second has 7 states. [2018-12-08 22:31:53,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 22:31:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 22:31:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-08 22:31:53,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 21 letters. Loop has 3 letters. [2018-12-08 22:31:53,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:53,360 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 22:31:53,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:53,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:53,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:53,388 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-08 22:31:53,388 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2018-12-08 22:31:53,407 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 128 states and 166 transitions. Complement of second has 9 states. [2018-12-08 22:31:53,408 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 [2018-12-08 22:31:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 22:31:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-12-08 22:31:53,408 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 21 letters. Loop has 3 letters. [2018-12-08 22:31:53,408 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:53,408 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 22:31:53,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:31:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:53,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:31:53,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:31:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:31:53,435 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 3 loop predicates [2018-12-08 22:31:53,435 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2018-12-08 22:31:53,447 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 139 states and 187 transitions. Complement of second has 8 states. [2018-12-08 22:31:53,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 22:31:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 22:31:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-12-08 22:31:53,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 3 letters. [2018-12-08 22:31:53,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:53,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 24 letters. Loop has 3 letters. [2018-12-08 22:31:53,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:53,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 6 letters. [2018-12-08 22:31:53,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 22:31:53,449 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 187 transitions. [2018-12-08 22:31:53,449 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 22:31:53,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 0 states and 0 transitions. [2018-12-08 22:31:53,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 22:31:53,449 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 22:31:53,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 22:31:53,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 22:31:53,450 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 22:31:53,450 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 22:31:53,450 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 22:31:53,450 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-12-08 22:31:53,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 22:31:53,450 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 22:31:53,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 22:31:53,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 10:31:53 BoogieIcfgContainer [2018-12-08 22:31:53,454 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 22:31:53,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 22:31:53,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 22:31:53,455 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 22:31:53,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:31:50" (3/4) ... [2018-12-08 22:31:53,457 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 22:31:53,457 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 22:31:53,458 INFO L168 Benchmark]: Toolchain (without parser) took 3230.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 958.7 MB in the beginning and 884.8 MB in the end (delta: 73.9 MB). Peak memory consumption was 271.0 MB. Max. memory is 11.5 GB. [2018-12-08 22:31:53,459 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 22:31:53,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.06 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 22:31:53,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.09 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 22:31:53,460 INFO L168 Benchmark]: Boogie Preprocessor took 11.40 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 945.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 22:31:53,460 INFO L168 Benchmark]: RCFGBuilder took 132.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -137.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-08 22:31:53,460 INFO L168 Benchmark]: BuchiAutomizer took 2946.38 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 97.0 MB). Free memory was 1.1 GB in the beginning and 884.8 MB in the end (delta: 198.1 MB). Peak memory consumption was 295.1 MB. Max. memory is 11.5 GB. [2018-12-08 22:31:53,460 INFO L168 Benchmark]: Witness Printer took 3.11 ms. Allocated memory is still 1.2 GB. Free memory is still 884.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 22:31:53,462 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 116.06 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.09 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.40 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 945.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 132.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -137.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2946.38 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 97.0 MB). Free memory was 1.1 GB in the beginning and 884.8 MB in the end (delta: 198.1 MB). Peak memory consumption was 295.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.11 ms. Allocated memory is still 1.2 GB. Free memory is still 884.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (3 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 71 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 83 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 137 SDtfs, 155 SDslu, 81 SDs, 0 SdLazy, 157 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax168 hnf99 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf94 smp100 dnf112 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...