./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 c0afa1d46bded0eb2bd485bf4790c0d11468ed7a .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:59:34,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:59:34,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:59:34,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:59:34,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:59:34,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:59:34,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:59:34,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:59:34,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:59:34,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:59:34,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:59:34,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:59:34,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:59:34,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:59:34,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:59:34,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:59:34,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:59:34,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:59:34,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:59:34,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:59:34,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:59:34,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:59:34,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:59:34,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:59:34,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:59:34,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:59:34,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:59:34,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:59:34,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:59:34,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:59:34,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:59:34,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:59:34,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:59:34,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:59:34,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:59:34,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:59:34,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:59:34,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:59:34,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:59:34,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:59:34,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:59:34,706 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:59:34,732 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:59:34,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:59:34,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:59:34,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:59:34,734 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:59:34,734 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:59:34,734 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:59:34,735 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:59:34,735 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:59:34,735 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:59:34,735 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:59:34,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:59:34,735 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:59:34,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:59:34,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:59:34,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:59:34,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:59:34,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:59:34,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:59:34,736 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:59:34,737 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:59:34,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:59:34,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:59:34,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:59:34,737 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:59:34,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:59:34,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:59:34,738 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:59:34,740 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:59:34,740 INFO L138 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_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 -> c0afa1d46bded0eb2bd485bf4790c0d11468ed7a [2019-10-22 08:59:34,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:59:34,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:59:34,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:59:34,796 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:59:34,796 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:59:34,797 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-10-22 08:59:34,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/data/fdde878aa/b9a9ad42d66247c1ac6cd96f54b8b537/FLAG03333b9f8 [2019-10-22 08:59:35,255 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:59:35,256 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-10-22 08:59:35,262 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/data/fdde878aa/b9a9ad42d66247c1ac6cd96f54b8b537/FLAG03333b9f8 [2019-10-22 08:59:35,275 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/data/fdde878aa/b9a9ad42d66247c1ac6cd96f54b8b537 [2019-10-22 08:59:35,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:59:35,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:59:35,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:35,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:59:35,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:59:35,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:35" (1/1) ... [2019-10-22 08:59:35,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d2d070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35, skipping insertion in model container [2019-10-22 08:59:35,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:35" (1/1) ... [2019-10-22 08:59:35,295 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:59:35,310 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:59:35,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:35,447 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:59:35,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:35,549 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:59:35,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35 WrapperNode [2019-10-22 08:59:35,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:35,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:35,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:59:35,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:59:35,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35" (1/1) ... [2019-10-22 08:59:35,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35" (1/1) ... [2019-10-22 08:59:35,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:35,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:59:35,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:59:35,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:59:35,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35" (1/1) ... [2019-10-22 08:59:35,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35" (1/1) ... [2019-10-22 08:59:35,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35" (1/1) ... [2019-10-22 08:59:35,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35" (1/1) ... [2019-10-22 08:59:35,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35" (1/1) ... [2019-10-22 08:59:35,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35" (1/1) ... [2019-10-22 08:59:35,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35" (1/1) ... [2019-10-22 08:59:35,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:59:35,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:59:35,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:59:35,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:59:35,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:59:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:59:35,877 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:59:35,877 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:59:35,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:35 BoogieIcfgContainer [2019-10-22 08:59:35,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:59:35,880 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:59:35,880 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:59:35,885 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:59:35,886 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:35,886 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:59:35" (1/3) ... [2019-10-22 08:59:35,887 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@735b3152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:59:35, skipping insertion in model container [2019-10-22 08:59:35,888 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:35,888 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:35" (2/3) ... [2019-10-22 08:59:35,889 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@735b3152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:59:35, skipping insertion in model container [2019-10-22 08:59:35,889 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:35,889 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:35" (3/3) ... [2019-10-22 08:59:35,891 INFO L371 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-10-22 08:59:35,973 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:59:35,973 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:59:35,973 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:59:35,974 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:59:35,974 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:59:35,974 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:59:35,974 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:59:35,974 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:59:35,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-10-22 08:59:36,011 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:36,012 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:36,012 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:36,019 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:59:36,019 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:59:36,019 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:59:36,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-10-22 08:59:36,020 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:36,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:36,021 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:36,021 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:59:36,021 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:59:36,029 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 10#L22-2true [2019-10-22 08:59:36,029 INFO L793 eck$LassoCheckResult]: Loop: 10#L22-2true assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 7#L24-2true assume !(main_~y~0 < main_~z~0); 5#L24-3true main_~y~0 := main_~x~0 + main_~y~0; 10#L22-2true [2019-10-22 08:59:36,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,035 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-10-22 08:59:36,044 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:36,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582802568] [2019-10-22 08:59:36,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,146 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:36,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,148 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2019-10-22 08:59:36,148 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:36,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810089074] [2019-10-22 08:59:36,149 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,149 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,163 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:36,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,165 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2019-10-22 08:59:36,165 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:36,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801454995] [2019-10-22 08:59:36,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,167 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,189 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:36,260 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:36,261 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:36,261 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:36,261 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:36,261 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:36,262 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:36,262 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:36,262 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:36,262 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2019-10-22 08:59:36,262 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:36,263 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:36,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,403 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:36,404 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:36,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:36,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:36,417 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:36,417 INFO L440 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_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:36,423 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:36,423 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:36,435 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:36,435 INFO L440 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_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:36,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:36,445 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:36,464 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:36,464 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:38,631 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:38,633 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:38,633 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:38,633 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:38,633 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:38,633 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:38,633 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:38,633 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:38,634 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:38,634 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2019-10-22 08:59:38,634 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:38,634 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:38,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,706 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:38,721 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:38,728 INFO L120 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 [2019-10-22 08:59:38,729 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:38,730 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:38,730 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:38,730 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:38,734 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:38,734 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:38,750 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:38,751 INFO L120 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 [2019-10-22 08:59:38,751 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:38,752 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:38,752 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:38,752 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:38,754 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:38,754 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:38,770 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:38,770 INFO L120 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 [2019-10-22 08:59:38,779 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:38,780 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:38,780 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:38,780 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:38,780 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:38,781 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:38,781 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:38,800 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:38,800 INFO L489 LassoAnalysis]: Using template '2-nested'. [2019-10-22 08:59:38,801 INFO L120 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 [2019-10-22 08:59:38,801 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:38,802 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:38,802 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:38,802 INFO L204 nArgumentSynthesizer]: 3 template conjuncts. [2019-10-22 08:59:38,813 INFO L400 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-10-22 08:59:38,814 INFO L401 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-10-22 08:59:38,828 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:38,828 INFO L120 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 [2019-10-22 08:59:38,829 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:38,829 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:38,830 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:38,830 INFO L204 nArgumentSynthesizer]: 3 template conjuncts. [2019-10-22 08:59:38,833 INFO L400 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-10-22 08:59:38,833 INFO L401 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-10-22 08:59:38,846 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:38,846 INFO L120 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 [2019-10-22 08:59:38,847 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:38,847 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:38,847 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:38,848 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:38,848 INFO L204 nArgumentSynthesizer]: 3 template conjuncts. [2019-10-22 08:59:38,849 INFO L400 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-10-22 08:59:38,849 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:38,865 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:38,889 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-10-22 08:59:38,889 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2019-10-22 08:59:38,891 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:38,892 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:38,892 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:38,892 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-10-22 08:59:38,896 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:38,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:38,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:38,983 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:59:38,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:38,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:38,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:39,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:39,048 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 [2019-10-22 08:59:39,049 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2019-10-22 08:59:39,121 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 34 states and 47 transitions. Complement of second has 8 states. [2019-10-22 08:59:39,122 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 [2019-10-22 08:59:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:59:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2019-10-22 08:59:39,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2019-10-22 08:59:39,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:39,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:59:39,127 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:39,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2019-10-22 08:59:39,127 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:39,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-10-22 08:59:39,131 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:39,134 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 14 transitions. [2019-10-22 08:59:39,136 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 08:59:39,136 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 08:59:39,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2019-10-22 08:59:39,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:39,137 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-10-22 08:59:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2019-10-22 08:59:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 08:59:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 08:59:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-10-22 08:59:39,165 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-10-22 08:59:39,165 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-10-22 08:59:39,166 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:59:39,166 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 14 transitions. [2019-10-22 08:59:39,166 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:39,166 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:39,167 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:39,167 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 08:59:39,167 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:59:39,168 INFO L791 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 93#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 94#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 96#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2019-10-22 08:59:39,168 INFO L793 eck$LassoCheckResult]: Loop: 97#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2019-10-22 08:59:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:39,168 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2019-10-22 08:59:39,168 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:39,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481265777] [2019-10-22 08:59:39,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,185 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:39,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:39,185 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2019-10-22 08:59:39,185 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:39,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398992445] [2019-10-22 08:59:39,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,193 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:39,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:39,194 INFO L82 PathProgramCache]: Analyzing trace with hash 29685033, now seen corresponding path program 2 times [2019-10-22 08:59:39,194 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:39,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369563492] [2019-10-22 08:59:39,194 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,211 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:39,227 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:39,228 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:39,228 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:39,228 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:39,228 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:39,228 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:39,228 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:39,228 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:39,228 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2019-10-22 08:59:39,228 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:39,229 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:39,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:39,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:39,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:39,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:39,294 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:39,294 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:39,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:39,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:39,309 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:39,309 INFO L440 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_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:39,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:39,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:39,325 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:39,326 INFO L440 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_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:39,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:39,334 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:39,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:39,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:39,478 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:39,480 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:39,480 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:39,480 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:39,480 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:39,480 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:39,480 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:39,481 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:39,481 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:39,481 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2019-10-22 08:59:39,481 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:39,481 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:39,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:39,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:39,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:39,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:39,543 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:39,544 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:39,544 INFO L120 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 [2019-10-22 08:59:39,545 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:39,545 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:39,545 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:39,545 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:39,547 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:39,547 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:39,551 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:39,551 INFO L120 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 [2019-10-22 08:59:39,552 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:39,552 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:39,552 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:39,553 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:39,554 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:39,554 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:39,558 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:39,559 INFO L120 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 [2019-10-22 08:59:39,559 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:39,560 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:39,560 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:39,560 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:39,560 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:39,560 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:39,561 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:39,564 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:39,568 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:59:39,569 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:59:39,569 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:39,569 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:39,569 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:39,570 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-10-22 08:59:39,570 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:39,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:39,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:39,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:39,599 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:39,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:39,600 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 [2019-10-22 08:59:39,600 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6 Second operand 2 states. [2019-10-22 08:59:39,614 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6. Second operand 2 states. Result 17 states and 28 transitions. Complement of second has 6 states. [2019-10-22 08:59:39,616 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 [2019-10-22 08:59:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-10-22 08:59:39,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 1 letters. [2019-10-22 08:59:39,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:39,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 1 letters. [2019-10-22 08:59:39,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:39,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2019-10-22 08:59:39,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:39,618 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 28 transitions. [2019-10-22 08:59:39,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:39,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 19 transitions. [2019-10-22 08:59:39,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-10-22 08:59:39,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-10-22 08:59:39,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-10-22 08:59:39,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:39,620 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-10-22 08:59:39,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-10-22 08:59:39,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-10-22 08:59:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 08:59:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-10-22 08:59:39,622 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-10-22 08:59:39,622 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-10-22 08:59:39,622 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:59:39,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-10-22 08:59:39,623 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:39,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:39,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:39,624 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-10-22 08:59:39,625 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:59:39,625 INFO L791 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 156#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 157#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 161#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 163#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2019-10-22 08:59:39,625 INFO L793 eck$LassoCheckResult]: Loop: 152#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 153#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 159#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2019-10-22 08:59:39,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:39,625 INFO L82 PathProgramCache]: Analyzing trace with hash 29685031, now seen corresponding path program 1 times [2019-10-22 08:59:39,626 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:39,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62171634] [2019-10-22 08:59:39,626 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,626 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,637 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:39,638 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 2 times [2019-10-22 08:59:39,638 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:39,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971378813] [2019-10-22 08:59:39,638 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,638 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,649 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:39,650 INFO L82 PathProgramCache]: Analyzing trace with hash -416479046, now seen corresponding path program 1 times [2019-10-22 08:59:39,650 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:39,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534590201] [2019-10-22 08:59:39,650 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,650 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:39,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:39,680 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:39,713 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:39,713 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:39,713 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:39,713 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:39,713 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:39,713 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:39,713 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:39,714 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:39,714 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2019-10-22 08:59:39,714 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:39,714 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:39,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:39,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:39,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:39,782 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:39,782 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:39,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:39,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:39,794 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:39,794 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:39,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:39,801 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:39,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:39,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:41,972 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:41,974 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:41,974 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:41,974 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:41,974 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:41,974 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:41,974 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:41,975 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:41,975 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:41,975 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2019-10-22 08:59:41,975 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:41,975 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:41,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:41,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:41,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:42,035 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:42,035 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:42,035 INFO L120 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 [2019-10-22 08:59:42,036 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:42,036 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:42,036 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:42,037 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:42,037 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:42,037 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:42,037 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:42,042 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:42,043 INFO L120 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 [2019-10-22 08:59:42,043 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:42,044 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:42,044 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:42,044 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:42,045 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:42,045 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:42,058 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:42,058 INFO L120 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 [2019-10-22 08:59:42,059 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:42,059 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:42,060 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:42,060 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:42,061 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:42,061 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:42,064 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:42,064 INFO L489 LassoAnalysis]: Using template '2-nested'. [2019-10-22 08:59:42,064 INFO L120 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 [2019-10-22 08:59:42,065 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:42,065 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:42,066 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:42,066 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:42,066 INFO L204 nArgumentSynthesizer]: 3 template conjuncts. [2019-10-22 08:59:42,067 INFO L400 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-10-22 08:59:42,067 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:42,073 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:42,079 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:59:42,079 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2019-10-22 08:59:42,079 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:42,080 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:42,080 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:42,080 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-10-22 08:59:42,081 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:42,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:42,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:42,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:42,121 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:59:42,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:42,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:42,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:42,178 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:42,180 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:42,242 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 [2019-10-22 08:59:42,242 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-10-22 08:59:42,277 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 30 states and 45 transitions. Complement of second has 8 states. [2019-10-22 08:59:42,278 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 [2019-10-22 08:59:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:59:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-10-22 08:59:42,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:59:42,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:42,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2019-10-22 08:59:42,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:42,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2019-10-22 08:59:42,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:42,280 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 45 transitions. [2019-10-22 08:59:42,282 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:42,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 22 states and 33 transitions. [2019-10-22 08:59:42,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-10-22 08:59:42,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-10-22 08:59:42,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2019-10-22 08:59:42,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:42,284 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-10-22 08:59:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2019-10-22 08:59:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-10-22 08:59:42,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 08:59:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2019-10-22 08:59:42,289 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-10-22 08:59:42,289 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-10-22 08:59:42,289 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:59:42,289 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2019-10-22 08:59:42,290 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:42,290 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:42,290 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:42,291 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-10-22 08:59:42,291 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:59:42,291 INFO L791 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 250#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 251#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 263#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 261#L24-2 assume !(main_~y~0 < main_~z~0); 247#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 248#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 259#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2019-10-22 08:59:42,291 INFO L793 eck$LassoCheckResult]: Loop: 258#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2019-10-22 08:59:42,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:42,292 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 2 times [2019-10-22 08:59:42,292 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:42,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573726507] [2019-10-22 08:59:42,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:42,308 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:42,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:42,308 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2019-10-22 08:59:42,308 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:42,309 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656766411] [2019-10-22 08:59:42,309 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,309 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:42,315 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 3 times [2019-10-22 08:59:42,316 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:42,316 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531415434] [2019-10-22 08:59:42,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:42,332 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:42,346 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:42,346 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:42,347 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:42,347 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:42,347 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:42,347 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:42,347 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:42,347 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:42,347 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2019-10-22 08:59:42,347 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:42,347 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:42,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:42,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:42,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:42,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:42,414 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:42,415 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:42,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:42,429 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:42,435 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:42,435 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:42,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:42,476 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:42,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:42,490 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:42,732 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:42,733 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:42,733 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:42,734 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:42,734 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:42,734 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:42,734 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:42,734 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:42,734 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:42,734 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2019-10-22 08:59:42,734 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:42,734 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:42,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:42,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:42,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:42,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:42,799 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:42,799 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:42,799 INFO L120 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 [2019-10-22 08:59:42,800 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:42,800 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:42,801 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:42,801 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:42,801 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:42,801 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:42,801 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:42,810 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:42,812 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:59:42,817 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:59:42,818 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:42,818 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:42,818 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:42,819 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~z~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-10-22 08:59:42,819 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:42,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:42,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:42,856 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:42,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:42,857 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 [2019-10-22 08:59:42,857 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-10-22 08:59:42,872 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2019-10-22 08:59:42,873 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 [2019-10-22 08:59:42,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-10-22 08:59:42,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-10-22 08:59:42,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:42,874 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:59:42,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:42,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:42,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:42,906 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:42,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:42,907 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 [2019-10-22 08:59:42,907 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-10-22 08:59:42,920 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2019-10-22 08:59:42,924 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 [2019-10-22 08:59:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:42,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-10-22 08:59:42,925 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-10-22 08:59:42,925 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:42,925 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:59:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:42,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:42,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:42,953 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:42,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:42,954 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 [2019-10-22 08:59:42,954 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-10-22 08:59:42,967 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 29 states and 45 transitions. Complement of second has 5 states. [2019-10-22 08:59:42,967 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 [2019-10-22 08:59:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-10-22 08:59:42,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 1 letters. [2019-10-22 08:59:42,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:42,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 1 letters. [2019-10-22 08:59:42,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:42,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 2 letters. [2019-10-22 08:59:42,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:42,969 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 45 transitions. [2019-10-22 08:59:42,971 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-10-22 08:59:42,971 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 31 transitions. [2019-10-22 08:59:42,971 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-10-22 08:59:42,972 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-10-22 08:59:42,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2019-10-22 08:59:42,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:42,972 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2019-10-22 08:59:42,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2019-10-22 08:59:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-10-22 08:59:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 08:59:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2019-10-22 08:59:42,974 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-10-22 08:59:42,974 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-10-22 08:59:42,974 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 08:59:42,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2019-10-22 08:59:42,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:59:42,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:42,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:42,976 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-10-22 08:59:42,976 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:59:42,976 INFO L791 eck$LassoCheckResult]: Stem: 453#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 451#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 452#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 456#L24-2 assume !(main_~y~0 < main_~z~0); 449#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 450#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 454#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 455#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2019-10-22 08:59:42,976 INFO L793 eck$LassoCheckResult]: Loop: 447#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 448#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 459#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2019-10-22 08:59:42,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:42,976 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 4 times [2019-10-22 08:59:42,976 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:42,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293954346] [2019-10-22 08:59:42,977 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,977 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:42,987 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:42,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:42,987 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 3 times [2019-10-22 08:59:42,988 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:42,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027641263] [2019-10-22 08:59:42,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:42,993 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:42,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:42,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1986148987, now seen corresponding path program 5 times [2019-10-22 08:59:42,994 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:42,994 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40090565] [2019-10-22 08:59:42,994 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,994 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:42,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:43,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40090565] [2019-10-22 08:59:43,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242419076] [2019-10-22 08:59:43,075 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:59:43,114 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-10-22 08:59:43,114 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:59:43,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:59:43,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:43,150 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:59:43,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-10-22 08:59:43,150 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612769478] [2019-10-22 08:59:43,177 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:43,178 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:43,178 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:43,178 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:43,178 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:43,178 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:43,178 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:43,178 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:43,178 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2019-10-22 08:59:43,178 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:43,179 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:43,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:43,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:43,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:43,236 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:43,236 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:43,247 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:43,247 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:43,252 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:43,252 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:43,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:43,257 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:43,260 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:43,260 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/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 [2019-10-22 08:59:43,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:43,264 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:43,272 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:43,273 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:45,440 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:45,442 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:45,443 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:45,443 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:45,443 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:45,443 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:45,443 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:45,443 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:45,444 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:45,444 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2019-10-22 08:59:45,444 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:45,444 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:45,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:45,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:45,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:45,507 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:45,507 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:45,508 INFO L120 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 [2019-10-22 08:59:45,508 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:45,509 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:45,509 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:45,509 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:45,510 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:45,510 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:45,512 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:45,512 INFO L120 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 [2019-10-22 08:59:45,513 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:45,513 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:45,513 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:45,513 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:45,514 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:45,514 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:45,517 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:45,518 INFO L120 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 [2019-10-22 08:59:45,518 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:45,518 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:45,518 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:45,518 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:45,518 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:45,519 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:45,519 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:45,522 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:45,522 INFO L489 LassoAnalysis]: Using template '2-nested'. [2019-10-22 08:59:45,522 INFO L120 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 [2019-10-22 08:59:45,523 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:45,523 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:45,523 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:45,523 INFO L204 nArgumentSynthesizer]: 3 template conjuncts. [2019-10-22 08:59:45,525 INFO L400 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-10-22 08:59:45,525 INFO L401 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-10-22 08:59:45,526 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:45,527 INFO L120 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 [2019-10-22 08:59:45,527 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:45,528 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:45,528 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:45,528 INFO L204 nArgumentSynthesizer]: 3 template conjuncts. [2019-10-22 08:59:45,529 INFO L400 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-10-22 08:59:45,529 INFO L401 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-10-22 08:59:45,533 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:45,534 INFO L120 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 [2019-10-22 08:59:45,534 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:45,534 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:45,534 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:45,535 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:45,535 INFO L204 nArgumentSynthesizer]: 3 template conjuncts. [2019-10-22 08:59:45,536 INFO L400 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-10-22 08:59:45,536 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:45,540 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:45,544 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:59:45,544 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2019-10-22 08:59:45,545 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:45,545 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:45,545 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:45,545 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-10-22 08:59:45,546 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:45,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:45,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:45,589 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:59:45,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:45,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:45,681 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 [2019-10-22 08:59:45,681 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-10-22 08:59:45,714 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 26 states and 37 transitions. Complement of second has 7 states. [2019-10-22 08:59:45,716 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 [2019-10-22 08:59:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:59:45,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-10-22 08:59:45,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2019-10-22 08:59:45,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:45,716 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:59:45,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:45,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:45,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:45,745 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:59:45,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:45,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:45,817 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 [2019-10-22 08:59:45,817 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-10-22 08:59:45,844 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 24 states and 32 transitions. Complement of second has 7 states. [2019-10-22 08:59:45,846 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 [2019-10-22 08:59:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:59:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-10-22 08:59:45,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 3 letters. [2019-10-22 08:59:45,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:45,847 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:59:45,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:45,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:45,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:45,867 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:59:45,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:45,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:45,952 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 [2019-10-22 08:59:45,952 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-10-22 08:59:45,983 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 31 states and 43 transitions. Complement of second has 6 states. [2019-10-22 08:59:45,985 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 [2019-10-22 08:59:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:59:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-10-22 08:59:45,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2019-10-22 08:59:45,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:45,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2019-10-22 08:59:45,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:45,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2019-10-22 08:59:45,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:45,986 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2019-10-22 08:59:45,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-10-22 08:59:45,988 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 24 states and 34 transitions. [2019-10-22 08:59:45,988 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-10-22 08:59:45,988 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 08:59:45,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 34 transitions. [2019-10-22 08:59:45,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:45,988 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-10-22 08:59:45,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 34 transitions. [2019-10-22 08:59:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2019-10-22 08:59:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 08:59:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2019-10-22 08:59:45,990 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-10-22 08:59:45,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:45,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:59:45,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:59:45,994 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 8 states. [2019-10-22 08:59:46,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:46,107 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2019-10-22 08:59:46,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:59:46,108 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2019-10-22 08:59:46,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:59:46,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 28 transitions. [2019-10-22 08:59:46,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-10-22 08:59:46,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 08:59:46,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2019-10-22 08:59:46,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:46,110 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2019-10-22 08:59:46,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2019-10-22 08:59:46,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-10-22 08:59:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 08:59:46,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2019-10-22 08:59:46,112 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2019-10-22 08:59:46,112 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2019-10-22 08:59:46,112 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-10-22 08:59:46,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2019-10-22 08:59:46,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:59:46,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:46,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:46,113 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-10-22 08:59:46,113 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:59:46,113 INFO L791 eck$LassoCheckResult]: Stem: 784#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 782#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 783#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 787#L24-2 assume !(main_~y~0 < main_~z~0); 795#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 794#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 793#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2019-10-22 08:59:46,114 INFO L793 eck$LassoCheckResult]: Loop: 778#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 779#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 789#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2019-10-22 08:59:46,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:46,114 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 6 times [2019-10-22 08:59:46,114 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:46,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481166833] [2019-10-22 08:59:46,114 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:46,114 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:46,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:46,130 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:46,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:46,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1711282, now seen corresponding path program 1 times [2019-10-22 08:59:46,136 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:46,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971851245] [2019-10-22 08:59:46,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:46,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:46,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:46,144 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:46,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:46,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1441076371, now seen corresponding path program 7 times [2019-10-22 08:59:46,145 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:46,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491331110] [2019-10-22 08:59:46,146 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:46,146 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:46,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:46,167 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:46,195 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:46,195 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:46,195 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:46,195 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:46,195 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:46,195 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:46,195 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:46,195 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:46,195 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2019-10-22 08:59:46,195 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:46,195 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:46,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:46,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:46,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:46,292 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:46,293 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:46,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:46,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:46,306 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:46,306 INFO L440 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: [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:46,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:46,315 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:46,320 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:46,320 INFO L440 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_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:46,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:46,328 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3d6b5b1-8008-4edd-bee8-a93a2c68b57a/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:46,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:46,342 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:46,898 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:46,899 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:46,899 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:46,900 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:46,900 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:46,900 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:46,900 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:46,900 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:46,900 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:46,900 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2019-10-22 08:59:46,900 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:46,900 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:46,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:46,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:46,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:46,975 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:46,975 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:46,975 INFO L120 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 [2019-10-22 08:59:46,976 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:46,976 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:46,976 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:46,976 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:46,977 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:46,977 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:46,980 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:46,980 INFO L120 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 [2019-10-22 08:59:46,981 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:46,981 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:46,981 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:46,981 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:46,982 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:46,982 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:46,984 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:46,984 INFO L120 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 [2019-10-22 08:59:46,985 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:46,985 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:46,985 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:46,985 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:46,985 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:46,986 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:46,986 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:46,989 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:46,991 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:59:46,991 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:59:46,992 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:46,992 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:46,992 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:46,992 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-10-22 08:59:46,993 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:47,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:47,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:47,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:59:47,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:47,050 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 [2019-10-22 08:59:47,050 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-10-22 08:59:47,074 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 35 states and 50 transitions. Complement of second has 6 states. [2019-10-22 08:59:47,076 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 [2019-10-22 08:59:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 08:59:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-10-22 08:59:47,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2019-10-22 08:59:47,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:47,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2019-10-22 08:59:47,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:47,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2019-10-22 08:59:47,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:47,090 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2019-10-22 08:59:47,091 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:59:47,091 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2019-10-22 08:59:47,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:59:47,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:59:47,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:59:47,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:59:47,092 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:47,092 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:47,093 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:47,093 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-10-22 08:59:47,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:59:47,093 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:59:47,093 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:59:47,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:59:47 BoogieIcfgContainer [2019-10-22 08:59:47,097 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:59:47,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:59:47,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:59:47,098 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:59:47,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:35" (3/4) ... [2019-10-22 08:59:47,101 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:59:47,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:59:47,103 INFO L168 Benchmark]: Toolchain (without parser) took 11823.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 941.8 MB in the beginning and 1.2 GB in the end (delta: -224.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:47,103 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:47,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 941.8 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:47,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:47,104 INFO L168 Benchmark]: Boogie Preprocessor took 20.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:47,105 INFO L168 Benchmark]: RCFGBuilder took 276.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:47,105 INFO L168 Benchmark]: BuchiAutomizer took 11217.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 36.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -53.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:47,105 INFO L168 Benchmark]: Witness Printer took 3.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:47,108 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 941.8 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 276.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 11217.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 36.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -53.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 3.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 5 locations. One deterministic module has affine ranking function -1 * y + z and consists of 4 locations. One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 5 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function z + -1 * y and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else x + y) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.1s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 9.7s. Construction of modules took 0.1s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 66 SDtfs, 68 SDslu, 8 SDs, 0 SdLazy, 143 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf97 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp97 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 7.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...