./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c0afa1d46bded0eb2bd485bf4790c0d11468ed7a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 01:40:00,936 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 01:40:00,937 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 01:40:00,944 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 01:40:00,944 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 01:40:00,945 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 01:40:00,945 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 01:40:00,946 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 01:40:00,947 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 01:40:00,948 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 01:40:00,949 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 01:40:00,949 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 01:40:00,949 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 01:40:00,950 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 01:40:00,951 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 01:40:00,951 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 01:40:00,952 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 01:40:00,953 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 01:40:00,954 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 01:40:00,956 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 01:40:00,956 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 01:40:00,957 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 01:40:00,959 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 01:40:00,959 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 01:40:00,959 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 01:40:00,959 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 01:40:00,960 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 01:40:00,961 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 01:40:00,961 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 01:40:00,962 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 01:40:00,962 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 01:40:00,963 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 01:40:00,963 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 01:40:00,963 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 01:40:00,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 01:40:00,964 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 01:40:00,964 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 01:40:00,975 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 01:40:00,975 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 01:40:00,976 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 01:40:00,976 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 01:40:00,976 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 01:40:00,977 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 01:40:00,977 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 01:40:00,977 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 01:40:00,977 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 01:40:00,977 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 01:40:00,977 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 01:40:00,977 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 01:40:00,978 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 01:40:00,978 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 01:40:00,978 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 01:40:00,978 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 01:40:00,978 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 01:40:00,978 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 01:40:00,978 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 01:40:00,979 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 01:40:00,979 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 01:40:00,979 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 01:40:00,979 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 01:40:00,979 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 01:40:00,979 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 01:40:00,979 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 01:40:00,979 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 01:40:00,980 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 01:40:00,980 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 01:40:00,980 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0afa1d46bded0eb2bd485bf4790c0d11468ed7a [2018-11-23 01:40:01,002 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 01:40:01,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 01:40:01,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 01:40:01,013 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 01:40:01,013 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 01:40:01,014 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c [2018-11-23 01:40:01,049 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/data/e34f62afe/79e8b6f843294ef4931ca4357156406e/FLAGd42be74a5 [2018-11-23 01:40:01,388 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 01:40:01,388 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c [2018-11-23 01:40:01,393 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/data/e34f62afe/79e8b6f843294ef4931ca4357156406e/FLAGd42be74a5 [2018-11-23 01:40:01,809 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/data/e34f62afe/79e8b6f843294ef4931ca4357156406e [2018-11-23 01:40:01,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 01:40:01,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 01:40:01,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 01:40:01,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 01:40:01,814 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 01:40:01,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:40:01" (1/1) ... [2018-11-23 01:40:01,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d4648b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01, skipping insertion in model container [2018-11-23 01:40:01,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:40:01" (1/1) ... [2018-11-23 01:40:01,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 01:40:01,833 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 01:40:01,949 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:40:01,951 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 01:40:01,960 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:40:01,969 INFO L195 MainTranslator]: Completed translation [2018-11-23 01:40:01,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01 WrapperNode [2018-11-23 01:40:01,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 01:40:01,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 01:40:01,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 01:40:01,970 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 01:40:01,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01" (1/1) ... [2018-11-23 01:40:01,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01" (1/1) ... [2018-11-23 01:40:01,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 01:40:01,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 01:40:01,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 01:40:01,987 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 01:40:01,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01" (1/1) ... [2018-11-23 01:40:01,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01" (1/1) ... [2018-11-23 01:40:01,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01" (1/1) ... [2018-11-23 01:40:01,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01" (1/1) ... [2018-11-23 01:40:01,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01" (1/1) ... [2018-11-23 01:40:01,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01" (1/1) ... [2018-11-23 01:40:01,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01" (1/1) ... [2018-11-23 01:40:01,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 01:40:01,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 01:40:01,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 01:40:01,998 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 01:40:01,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 01:40:02,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 01:40:02,155 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 01:40:02,155 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 01:40:02,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:02 BoogieIcfgContainer [2018-11-23 01:40:02,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 01:40:02,156 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 01:40:02,156 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 01:40:02,158 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 01:40:02,159 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 01:40:02,159 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:40:01" (1/3) ... [2018-11-23 01:40:02,159 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f904dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:40:02, skipping insertion in model container [2018-11-23 01:40:02,159 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 01:40:02,159 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:01" (2/3) ... [2018-11-23 01:40:02,160 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f904dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:40:02, skipping insertion in model container [2018-11-23 01:40:02,160 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 01:40:02,160 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:02" (3/3) ... [2018-11-23 01:40:02,161 INFO L375 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c [2018-11-23 01:40:02,192 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 01:40:02,192 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 01:40:02,192 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 01:40:02,192 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 01:40:02,192 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 01:40:02,193 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 01:40:02,193 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 01:40:02,193 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 01:40:02,193 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 01:40:02,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-23 01:40:02,212 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 01:40:02,212 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 01:40:02,212 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 01:40:02,216 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 01:40:02,216 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 01:40:02,216 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 01:40:02,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-23 01:40:02,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 01:40:02,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 01:40:02,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 01:40:02,217 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 01:40:02,217 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 01:40:02,224 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 10#L22-2true [2018-11-23 01:40:02,224 INFO L796 eck$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 [2018-11-23 01:40:02,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:02,229 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-11-23 01:40:02,230 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:02,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:02,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:02,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:40:02,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:02,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:02,295 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2018-11-23 01:40:02,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:02,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:02,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:02,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:40:02,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:02,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:02,305 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2018-11-23 01:40:02,305 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:02,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:02,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:02,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:40:02,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:02,351 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:02,352 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:02,352 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:02,352 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:02,352 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 01:40:02,352 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:02,352 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:02,352 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:02,353 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 01:40:02,353 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:02,353 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:02,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:02,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:02,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:02,475 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:02,476 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:02,483 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:02,483 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:02,502 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 01:40:02,502 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:02,505 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:02,505 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:02,520 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 01:40:02,520 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:02,523 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:02,523 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:02,540 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 01:40:02,540 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:04,207 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 01:40:04,208 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:04,208 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:04,208 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:04,208 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:04,208 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 01:40:04,209 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:04,209 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:04,209 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:04,209 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 01:40:04,209 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:04,209 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:04,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:04,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:04,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:04,291 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:04,295 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 01:40:04,296 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:04,298 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:04,299 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:04,299 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:04,299 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:04,302 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 01:40:04,302 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 01:40:04,308 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:04,309 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:04,309 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:04,309 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:04,309 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:04,309 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:04,311 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 01:40:04,311 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 01:40:04,317 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:04,318 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:04,318 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:04,319 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 01:40:04,319 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:04,319 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:04,319 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:04,320 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 01:40:04,320 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 01:40:04,327 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:04,327 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-23 01:40:04,328 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:04,328 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:04,329 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:04,329 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:04,329 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 01:40:04,331 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-11-23 01:40:04,331 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-11-23 01:40:04,335 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:04,335 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:04,336 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:04,336 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:04,336 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:04,336 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 01:40:04,339 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-11-23 01:40:04,340 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-11-23 01:40:04,347 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:04,347 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:04,348 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:04,348 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 01:40:04,348 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:04,348 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:04,348 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 01:40:04,349 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 01:40:04,349 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 01:40:04,358 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 01:40:04,374 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2018-11-23 01:40:04,374 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-23 01:40:04,376 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 01:40:04,376 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 01:40:04,376 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 01:40:04,376 INFO L520 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 [] [2018-11-23 01:40:04,378 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 01:40:04,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:04,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:04,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:04,464 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 01:40:04,465 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2018-11-23 01:40:04,530 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. [2018-11-23 01:40:04,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 01:40:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 01:40:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2018-11-23 01:40:04,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-23 01:40:04,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:04,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-23 01:40:04,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:04,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-23 01:40:04,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:04,536 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2018-11-23 01:40:04,538 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 01:40:04,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 14 transitions. [2018-11-23 01:40:04,543 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-23 01:40:04,543 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 01:40:04,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2018-11-23 01:40:04,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 01:40:04,544 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-11-23 01:40:04,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2018-11-23 01:40:04,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-11-23 01:40:04,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-23 01:40:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2018-11-23 01:40:04,565 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-11-23 01:40:04,565 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-11-23 01:40:04,566 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 01:40:04,566 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 14 transitions. [2018-11-23 01:40:04,566 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 01:40:04,566 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 01:40:04,566 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 01:40:04,566 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-23 01:40:04,566 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 01:40:04,566 INFO L794 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 93#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 94#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 96#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2018-11-23 01:40:04,567 INFO L796 eck$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 [2018-11-23 01:40:04,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:04,567 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2018-11-23 01:40:04,567 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:04,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:04,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:04,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:40:04,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:04,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:04,574 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2018-11-23 01:40:04,574 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:04,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:04,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:04,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:40:04,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:04,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash 29685033, now seen corresponding path program 2 times [2018-11-23 01:40:04,579 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:04,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:04,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:04,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:40:04,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:04,610 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:04,610 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:04,610 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:04,611 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:04,611 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 01:40:04,611 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:04,611 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:04,611 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:04,611 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 01:40:04,611 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:04,611 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:04,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:04,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:04,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:04,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:04,652 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:04,652 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:04,656 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:04,656 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:04,671 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 01:40:04,671 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:04,675 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:04,675 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:04,691 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 01:40:04,691 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:04,700 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 01:40:04,700 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 1, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:04,723 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:04,723 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:04,738 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 01:40:04,738 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:04,746 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:04,746 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:04,763 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 01:40:04,763 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:04,888 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 01:40:04,890 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:04,890 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:04,890 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:04,890 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:04,891 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 01:40:04,891 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:04,891 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:04,891 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:04,891 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 01:40:04,891 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:04,891 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:04,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:04,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:04,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:04,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:04,949 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:04,949 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 01:40:04,949 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:04,950 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:04,950 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:04,950 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:04,950 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:04,952 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 01:40:04,952 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 01:40:04,954 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:04,955 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:04,955 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:04,955 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 01:40:04,955 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:04,955 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:04,956 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:04,956 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 01:40:04,956 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 01:40:04,958 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:04,958 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:04,959 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:04,959 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 01:40:04,959 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:04,959 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:04,959 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:04,960 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 01:40:04,960 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 01:40:04,963 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 01:40:04,965 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-23 01:40:04,966 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 01:40:04,966 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 01:40:04,966 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 01:40:04,966 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 01:40:04,967 INFO L520 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 [] [2018-11-23 01:40:04,967 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 01:40:04,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:05,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:05,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:05,004 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 01:40:05,004 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6 Second operand 2 states. [2018-11-23 01:40:05,019 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. [2018-11-23 01:40:05,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 01:40:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 01:40:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-23 01:40:05,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 1 letters. [2018-11-23 01:40:05,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:05,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 1 letters. [2018-11-23 01:40:05,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:05,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 01:40:05,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:05,023 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 28 transitions. [2018-11-23 01:40:05,024 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 01:40:05,024 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 19 transitions. [2018-11-23 01:40:05,024 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-23 01:40:05,025 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-23 01:40:05,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-11-23 01:40:05,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 01:40:05,025 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-11-23 01:40:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-11-23 01:40:05,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-11-23 01:40:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 01:40:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2018-11-23 01:40:05,026 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-11-23 01:40:05,026 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-11-23 01:40:05,027 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 01:40:05,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2018-11-23 01:40:05,027 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 01:40:05,027 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 01:40:05,027 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 01:40:05,029 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-23 01:40:05,029 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 01:40:05,029 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 156#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 157#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 161#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 163#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2018-11-23 01:40:05,029 INFO L796 eck$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 [2018-11-23 01:40:05,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:05,029 INFO L82 PathProgramCache]: Analyzing trace with hash 29685031, now seen corresponding path program 1 times [2018-11-23 01:40:05,030 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:05,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:05,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:05,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:40:05,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:05,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:05,039 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 2 times [2018-11-23 01:40:05,039 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:05,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:05,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:05,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:40:05,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:05,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:05,044 INFO L82 PathProgramCache]: Analyzing trace with hash -416479046, now seen corresponding path program 1 times [2018-11-23 01:40:05,044 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:05,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:05,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:05,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:40:05,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:05,063 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:05,063 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:05,063 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:05,063 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:05,063 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 01:40:05,064 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:05,064 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:05,064 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:05,064 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 01:40:05,064 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:05,064 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:05,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:05,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:05,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:05,105 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:05,105 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:05,107 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:05,107 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:05,124 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 01:40:05,124 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:07,248 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 01:40:07,250 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:07,250 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:07,250 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:07,250 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:07,250 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 01:40:07,251 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:07,251 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:07,251 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:07,251 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 01:40:07,251 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:07,251 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:07,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:07,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:07,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:07,291 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:07,291 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 01:40:07,291 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:07,292 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:07,292 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 01:40:07,292 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:07,292 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:07,292 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:07,293 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 01:40:07,293 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 01:40:07,295 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:07,296 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:07,296 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:07,296 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:07,296 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:07,296 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:07,297 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 01:40:07,297 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 01:40:07,300 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:07,300 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:07,301 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:07,301 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:07,301 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:07,301 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:07,302 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 01:40:07,302 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 01:40:07,304 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:07,304 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-23 01:40:07,304 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:07,305 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:07,305 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 01:40:07,305 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:07,305 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:07,305 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 01:40:07,306 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 01:40:07,306 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 01:40:07,309 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 01:40:07,315 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-23 01:40:07,315 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-23 01:40:07,315 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 01:40:07,315 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 01:40:07,316 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 01:40:07,316 INFO L520 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 [] [2018-11-23 01:40:07,316 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 01:40:07,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:07,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:07,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:07,421 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 01:40:07,421 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-23 01:40:07,441 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. [2018-11-23 01:40:07,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 01:40:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 01:40:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2018-11-23 01:40:07,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-23 01:40:07,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:07,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-23 01:40:07,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:07,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2018-11-23 01:40:07,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:07,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 45 transitions. [2018-11-23 01:40:07,445 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 01:40:07,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 22 states and 33 transitions. [2018-11-23 01:40:07,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-23 01:40:07,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-23 01:40:07,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2018-11-23 01:40:07,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 01:40:07,446 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2018-11-23 01:40:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2018-11-23 01:40:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-11-23 01:40:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 01:40:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2018-11-23 01:40:07,448 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-11-23 01:40:07,448 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-11-23 01:40:07,448 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 01:40:07,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2018-11-23 01:40:07,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 01:40:07,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 01:40:07,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 01:40:07,449 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-11-23 01:40:07,449 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 01:40:07,449 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 250#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 251#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 263#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 261#L24-2 assume !(main_~y~0 < main_~z~0); 247#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 248#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 259#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2018-11-23 01:40:07,449 INFO L796 eck$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 [2018-11-23 01:40:07,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:07,449 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 2 times [2018-11-23 01:40:07,449 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:07,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:07,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:40:07,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:07,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:07,457 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2018-11-23 01:40:07,457 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:07,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:07,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:40:07,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:07,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:07,460 INFO L82 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 3 times [2018-11-23 01:40:07,461 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:07,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:07,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:40:07,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:07,479 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:07,479 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:07,479 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:07,479 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:07,479 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 01:40:07,479 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:07,479 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:07,479 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:07,479 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-23 01:40:07,479 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:07,479 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:07,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:07,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:07,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:07,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:07,517 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:07,517 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:07,521 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:07,521 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:07,537 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 01:40:07,537 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:07,546 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 01:40:07,546 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [2, 1, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:07,562 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:07,562 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:07,576 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 01:40:07,576 INFO L448 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_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:07,580 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:07,580 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:07,594 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 01:40:07,594 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:07,597 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:07,597 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:07,616 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 01:40:07,616 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:07,737 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 01:40:07,739 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:07,739 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:07,739 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:07,739 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:07,739 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 01:40:07,739 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:07,740 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:07,740 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:07,740 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-23 01:40:07,740 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:07,740 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:07,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:07,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:07,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:07,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:07,769 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:07,769 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 01:40:07,770 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:07,770 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:07,770 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 01:40:07,770 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:07,770 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:07,770 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:07,771 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 01:40:07,771 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 01:40:07,772 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:07,772 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:07,772 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:07,772 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:07,772 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:07,772 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:07,773 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 01:40:07,773 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 01:40:07,775 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:07,776 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:07,776 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:07,776 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:07,776 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:07,777 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:07,777 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 01:40:07,778 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 01:40:07,779 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:07,779 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:07,780 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:07,780 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 01:40:07,780 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:07,780 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:07,780 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:07,782 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 01:40:07,783 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 01:40:07,784 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 01:40:07,786 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-23 01:40:07,786 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 01:40:07,787 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 01:40:07,787 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 01:40:07,787 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 01:40:07,787 INFO L520 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 [] [2018-11-23 01:40:07,787 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 01:40:07,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:07,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:07,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:07,813 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 01:40:07,813 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2018-11-23 01:40:07,822 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. [2018-11-23 01:40:07,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 01:40:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 01:40:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-23 01:40:07,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-23 01:40:07,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:07,823 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 01:40:07,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:07,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:07,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:07,839 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 01:40:07,839 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2018-11-23 01:40:07,845 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. [2018-11-23 01:40:07,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 01:40:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 01:40:07,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-23 01:40:07,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-23 01:40:07,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:07,846 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 01:40:07,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:07,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:07,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:07,878 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 01:40:07,878 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2018-11-23 01:40:07,888 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. [2018-11-23 01:40:07,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 01:40:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 01:40:07,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-11-23 01:40:07,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-23 01:40:07,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:07,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 1 letters. [2018-11-23 01:40:07,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:07,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-23 01:40:07,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:07,890 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 45 transitions. [2018-11-23 01:40:07,893 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 01:40:07,893 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 31 transitions. [2018-11-23 01:40:07,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-23 01:40:07,894 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-23 01:40:07,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2018-11-23 01:40:07,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 01:40:07,894 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-11-23 01:40:07,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2018-11-23 01:40:07,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-11-23 01:40:07,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 01:40:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2018-11-23 01:40:07,895 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-11-23 01:40:07,895 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-11-23 01:40:07,895 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 01:40:07,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2018-11-23 01:40:07,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 01:40:07,896 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 01:40:07,896 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 01:40:07,896 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-11-23 01:40:07,896 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 01:40:07,896 INFO L794 eck$LassoCheckResult]: Stem: 453#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 451#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 452#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 456#L24-2 assume !(main_~y~0 < main_~z~0); 449#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 450#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 454#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 455#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2018-11-23 01:40:07,896 INFO L796 eck$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 [2018-11-23 01:40:07,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:07,896 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 4 times [2018-11-23 01:40:07,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:07,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:07,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,897 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:40:07,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:07,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:07,903 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 3 times [2018-11-23 01:40:07,903 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:07,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:07,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:40:07,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:07,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:07,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1986148987, now seen corresponding path program 5 times [2018-11-23 01:40:07,907 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:07,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:07,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:40:07,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:07,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:40:07,951 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 01:40:07,960 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 01:40:07,966 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2018-11-23 01:40:07,966 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:40:07,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:07,994 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:40:07,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-23 01:40:08,014 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:08,014 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:08,014 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:08,014 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:08,014 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 01:40:08,014 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:08,014 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:08,014 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:08,014 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-23 01:40:08,014 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:08,014 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:08,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:08,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:08,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:08,053 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:08,053 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:08,055 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:08,055 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:08,075 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 01:40:08,075 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:10,204 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 01:40:10,206 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:10,206 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:10,206 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:10,206 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:10,206 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 01:40:10,206 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:10,206 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:10,206 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:10,206 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-23 01:40:10,206 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:10,206 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:10,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:10,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:10,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:10,234 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:10,234 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 01:40:10,234 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:10,235 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:10,235 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 01:40:10,235 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:10,235 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:10,235 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:10,235 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 01:40:10,235 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 01:40:10,237 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:10,237 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:10,238 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:10,238 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:10,238 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:10,238 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:10,239 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 01:40:10,239 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 01:40:10,240 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:10,240 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:10,241 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:10,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:10,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:10,241 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:10,241 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 01:40:10,242 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 01:40:10,243 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:10,243 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-23 01:40:10,244 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:10,244 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:10,244 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 01:40:10,244 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:10,244 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:10,244 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 01:40:10,245 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 01:40:10,245 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 01:40:10,248 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 01:40:10,253 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-11-23 01:40:10,253 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-23 01:40:10,253 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 01:40:10,253 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 01:40:10,253 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 01:40:10,254 INFO L520 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 [] [2018-11-23 01:40:10,254 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 01:40:10,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:10,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:10,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:10,354 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 01:40:10,355 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-23 01:40:10,370 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. [2018-11-23 01:40:10,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 01:40:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 01:40:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-23 01:40:10,372 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-23 01:40:10,372 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:10,372 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 01:40:10,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:10,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:10,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:10,436 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 01:40:10,437 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-23 01:40:10,452 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. [2018-11-23 01:40:10,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 01:40:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 01:40:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-23 01:40:10,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-23 01:40:10,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:10,453 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 01:40:10,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:10,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:10,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:10,513 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 01:40:10,514 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-23 01:40:10,527 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. [2018-11-23 01:40:10,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 01:40:10,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 01:40:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-23 01:40:10,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-23 01:40:10,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:10,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2018-11-23 01:40:10,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:10,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2018-11-23 01:40:10,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:10,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2018-11-23 01:40:10,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 01:40:10,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 24 states and 34 transitions. [2018-11-23 01:40:10,531 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-23 01:40:10,531 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-23 01:40:10,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 34 transitions. [2018-11-23 01:40:10,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 01:40:10,531 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-11-23 01:40:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 34 transitions. [2018-11-23 01:40:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2018-11-23 01:40:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-23 01:40:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2018-11-23 01:40:10,532 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-23 01:40:10,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 01:40:10,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-23 01:40:10,535 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 8 states. [2018-11-23 01:40:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:40:10,629 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2018-11-23 01:40:10,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 01:40:10,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2018-11-23 01:40:10,630 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 01:40:10,631 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 28 transitions. [2018-11-23 01:40:10,631 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-23 01:40:10,631 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-23 01:40:10,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2018-11-23 01:40:10,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 01:40:10,631 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-11-23 01:40:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2018-11-23 01:40:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2018-11-23 01:40:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 01:40:10,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-11-23 01:40:10,633 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-11-23 01:40:10,633 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-11-23 01:40:10,633 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-23 01:40:10,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2018-11-23 01:40:10,633 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 01:40:10,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 01:40:10,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 01:40:10,634 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-11-23 01:40:10,634 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 01:40:10,634 INFO L794 eck$LassoCheckResult]: Stem: 784#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 782#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 783#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 787#L24-2 assume !(main_~y~0 < main_~z~0); 795#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 794#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 793#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2018-11-23 01:40:10,634 INFO L796 eck$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 [2018-11-23 01:40:10,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:10,634 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 6 times [2018-11-23 01:40:10,634 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:10,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:10,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:10,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:40:10,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:10,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:10,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1711282, now seen corresponding path program 1 times [2018-11-23 01:40:10,644 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:10,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:10,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:10,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:40:10,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:10,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1441076371, now seen corresponding path program 7 times [2018-11-23 01:40:10,648 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:40:10,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:40:10,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:10,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:40:10,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:40:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:40:10,679 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:10,679 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:10,679 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:10,679 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:10,679 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 01:40:10,679 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:10,679 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:10,679 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:10,679 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-23 01:40:10,679 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:10,680 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:10,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:10,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:10,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:10,729 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:10,729 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:10,735 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:10,735 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:10,762 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 01:40:10,762 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:10,766 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:10,767 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:10,791 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 01:40:10,791 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:10,795 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 01:40:10,795 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b08b5af4-2c1f-42c4-8420-8071c6a8168d/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:10,815 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 01:40:10,815 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 01:40:11,436 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 01:40:11,438 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 01:40:11,438 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 01:40:11,438 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 01:40:11,438 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 01:40:11,438 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 01:40:11,438 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 01:40:11,438 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 01:40:11,438 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 01:40:11,438 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-23 01:40:11,438 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 01:40:11,438 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 01:40:11,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:11,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:11,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 01:40:11,481 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 01:40:11,481 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 01:40:11,481 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:11,481 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:11,481 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:11,482 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:11,482 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:11,482 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 01:40:11,482 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 01:40:11,483 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 01:40:11,484 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 01:40:11,484 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 01:40:11,484 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 01:40:11,484 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 01:40:11,484 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 01:40:11,484 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 01:40:11,485 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 01:40:11,485 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 01:40:11,487 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 01:40:11,489 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 01:40:11,489 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 01:40:11,489 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 01:40:11,489 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 01:40:11,490 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 01:40:11,490 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2018-11-23 01:40:11,490 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 01:40:11,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:40:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:11,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:40:11,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:40:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:40:11,529 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 01:40:11,529 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11 Second operand 5 states. [2018-11-23 01:40:11,538 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. [2018-11-23 01:40:11,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 01:40:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 01:40:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-23 01:40:11,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-23 01:40:11,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:11,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-23 01:40:11,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:11,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2018-11-23 01:40:11,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 01:40:11,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2018-11-23 01:40:11,540 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 01:40:11,540 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2018-11-23 01:40:11,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 01:40:11,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 01:40:11,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 01:40:11,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 01:40:11,540 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 01:40:11,540 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 01:40:11,540 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 01:40:11,541 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-23 01:40:11,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 01:40:11,541 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 01:40:11,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 01:40:11,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 01:40:11 BoogieIcfgContainer [2018-11-23 01:40:11,545 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 01:40:11,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 01:40:11,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 01:40:11,545 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 01:40:11,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:02" (3/4) ... [2018-11-23 01:40:11,548 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 01:40:11,548 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 01:40:11,548 INFO L168 Benchmark]: Toolchain (without parser) took 9736.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.0 MB). Free memory was 959.1 MB in the beginning and 978.9 MB in the end (delta: -19.7 MB). Peak memory consumption was 195.2 MB. Max. memory is 11.5 GB. [2018-11-23 01:40:11,549 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:40:11,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.39 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 01:40:11,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.62 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 01:40:11,550 INFO L168 Benchmark]: Boogie Preprocessor took 11.03 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:40:11,550 INFO L168 Benchmark]: RCFGBuilder took 157.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-23 01:40:11,551 INFO L168 Benchmark]: BuchiAutomizer took 9389.10 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 978.9 MB in the end (delta: 155.9 MB). Peak memory consumption was 219.3 MB. Max. memory is 11.5 GB. [2018-11-23 01:40:11,551 INFO L168 Benchmark]: Witness Printer took 2.57 ms. Allocated memory is still 1.2 GB. Free memory is still 978.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:40:11,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.39 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.62 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.03 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 157.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 9389.10 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 978.9 MB in the end (delta: 155.9 MB). Peak memory consumption was 219.3 MB. Max. memory is 11.5 GB. * Witness Printer took 2.57 ms. Allocated memory is still 1.2 GB. Free memory is still 978.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 -1 * y + z 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 y + x) 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 9.3s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 8.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. 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: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 7.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...