./Ultimate.py --spec ../../sv-benchmarks/c/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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/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_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/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 0.1.23-5842f4b [2018-11-18 10:59:04,101 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:59:04,102 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:59:04,110 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:59:04,110 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:59:04,111 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:59:04,112 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:59:04,113 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:59:04,114 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:59:04,115 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:59:04,115 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:59:04,115 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:59:04,116 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:59:04,117 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:59:04,117 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:59:04,118 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:59:04,119 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:59:04,120 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:59:04,121 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:59:04,122 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:59:04,123 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:59:04,124 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:59:04,125 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:59:04,125 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:59:04,126 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:59:04,126 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:59:04,127 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:59:04,128 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:59:04,128 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:59:04,129 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:59:04,129 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:59:04,130 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:59:04,130 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:59:04,130 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:59:04,131 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:59:04,131 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:59:04,131 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 10:59:04,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:59:04,142 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:59:04,143 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:59:04,143 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:59:04,143 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:59:04,143 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 10:59:04,143 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 10:59:04,143 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 10:59:04,143 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 10:59:04,144 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 10:59:04,144 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 10:59:04,144 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:59:04,144 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 10:59:04,144 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:59:04,144 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:59:04,144 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 10:59:04,144 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 10:59:04,145 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 10:59:04,145 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:59:04,145 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 10:59:04,145 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:59:04,145 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 10:59:04,145 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:59:04,145 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:59:04,145 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 10:59:04,145 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:59:04,146 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:59:04,146 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 10:59:04,146 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 10:59:04,146 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_26e9ba19-af85-4551-ac17-3eb48810f8ab/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 [2018-11-18 10:59:04,172 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:59:04,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:59:04,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:59:04,184 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:59:04,185 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:59:04,185 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c [2018-11-18 10:59:04,224 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/data/7c35cba0b/2b0e0a0ee704448097677904c0f2330d/FLAGd7c3585b7 [2018-11-18 10:59:04,621 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:59:04,622 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c [2018-11-18 10:59:04,626 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/data/7c35cba0b/2b0e0a0ee704448097677904c0f2330d/FLAGd7c3585b7 [2018-11-18 10:59:04,638 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/data/7c35cba0b/2b0e0a0ee704448097677904c0f2330d [2018-11-18 10:59:04,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:59:04,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 10:59:04,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:59:04,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:59:04,646 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:59:04,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:59:04" (1/1) ... [2018-11-18 10:59:04,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6fa06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04, skipping insertion in model container [2018-11-18 10:59:04,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:59:04" (1/1) ... [2018-11-18 10:59:04,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:59:04,672 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:59:04,776 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:59:04,778 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:59:04,788 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:59:04,797 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:59:04,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04 WrapperNode [2018-11-18 10:59:04,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:59:04,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 10:59:04,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 10:59:04,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 10:59:04,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04" (1/1) ... [2018-11-18 10:59:04,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04" (1/1) ... [2018-11-18 10:59:04,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 10:59:04,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:59:04,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:59:04,816 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:59:04,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04" (1/1) ... [2018-11-18 10:59:04,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04" (1/1) ... [2018-11-18 10:59:04,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04" (1/1) ... [2018-11-18 10:59:04,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04" (1/1) ... [2018-11-18 10:59:04,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04" (1/1) ... [2018-11-18 10:59:04,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04" (1/1) ... [2018-11-18 10:59:04,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04" (1/1) ... [2018-11-18 10:59:04,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:59:04,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:59:04,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:59:04,827 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:59:04,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:04,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:59:04,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:59:04,990 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:59:04,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:59:04 BoogieIcfgContainer [2018-11-18 10:59:04,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:59:04,991 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 10:59:04,991 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 10:59:04,993 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 10:59:04,994 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 10:59:04,994 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 10:59:04" (1/3) ... [2018-11-18 10:59:04,995 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@115307b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 10:59:04, skipping insertion in model container [2018-11-18 10:59:04,995 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 10:59:04,995 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:04" (2/3) ... [2018-11-18 10:59:04,995 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@115307b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 10:59:04, skipping insertion in model container [2018-11-18 10:59:04,996 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 10:59:04,996 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:59:04" (3/3) ... [2018-11-18 10:59:04,997 INFO L375 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c [2018-11-18 10:59:05,044 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:59:05,044 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 10:59:05,044 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 10:59:05,044 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 10:59:05,045 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:59:05,045 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:59:05,045 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 10:59:05,045 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:59:05,045 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 10:59:05,056 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-18 10:59:05,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 10:59:05,071 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:59:05,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:59:05,075 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 10:59:05,075 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 10:59:05,075 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 10:59:05,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-18 10:59:05,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 10:59:05,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:59:05,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:59:05,076 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 10:59:05,077 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 10:59:05,081 INFO L794 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 11#L22-3true [2018-11-18 10:59:05,081 INFO L796 eck$LassoCheckResult]: Loop: 11#L22-3true assume true; 6#L22-1true assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 7#L24-3true assume !true; 14#L24-4true main_~y~0 := main_~x~0 + main_~y~0; 11#L22-3true [2018-11-18 10:59:05,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:05,085 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2018-11-18 10:59:05,086 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:05,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:05,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:05,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:05,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:05,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:05,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1206921, now seen corresponding path program 1 times [2018-11-18 10:59:05,157 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:05,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:05,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:05,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:05,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:05,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:05,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:59:05,182 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 10:59:05,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 10:59:05,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:59:05,193 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2018-11-18 10:59:05,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:05,197 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2018-11-18 10:59:05,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 10:59:05,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2018-11-18 10:59:05,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 10:59:05,202 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2018-11-18 10:59:05,203 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-18 10:59:05,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-18 10:59:05,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2018-11-18 10:59:05,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 10:59:05,204 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-11-18 10:59:05,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2018-11-18 10:59:05,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-11-18 10:59:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-18 10:59:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-11-18 10:59:05,225 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-11-18 10:59:05,225 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-11-18 10:59:05,225 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 10:59:05,226 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2018-11-18 10:59:05,226 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 10:59:05,226 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:59:05,226 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:59:05,226 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 10:59:05,227 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 10:59:05,227 INFO L794 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 32#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~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; 33#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 34#L22-3 [2018-11-18 10:59:05,227 INFO L796 eck$LassoCheckResult]: Loop: 34#L22-3 assume true; 35#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 36#L24-3 assume true; 37#L24-1 assume !(main_~y~0 < main_~z~0); 39#L24-4 main_~y~0 := main_~x~0 + main_~y~0; 34#L22-3 [2018-11-18 10:59:05,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:05,227 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 2 times [2018-11-18 10:59:05,227 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:05,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:05,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:05,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:05,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:05,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:05,234 INFO L82 PathProgramCache]: Analyzing trace with hash 37406706, now seen corresponding path program 1 times [2018-11-18 10:59:05,235 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:05,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:05,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:05,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:59:05,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:05,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:05,243 INFO L82 PathProgramCache]: Analyzing trace with hash 119476209, now seen corresponding path program 1 times [2018-11-18 10:59:05,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:05,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:05,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:05,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:05,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:05,290 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:05,291 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:05,291 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:05,291 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:05,291 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:59:05,291 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:05,291 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:05,292 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:05,292 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 10:59:05,292 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:05,292 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:05,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:05,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:05,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:05,390 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:05,391 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:05,394 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:05,394 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:05,413 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:59:05,413 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_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:05,415 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:05,415 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:05,431 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:59:05,431 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_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:05,433 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:05,433 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:05,451 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:59:05,451 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:07,114 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:59:07,115 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:07,115 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:07,116 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:07,116 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:07,116 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:59:07,116 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:07,116 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:07,116 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:07,116 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 10:59:07,116 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:07,116 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:07,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,191 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:07,195 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:59:07,197 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:07,198 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:07,198 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:07,199 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:07,199 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:07,202 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:59:07,202 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:59:07,212 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:07,212 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:07,213 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:07,213 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:07,213 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:07,213 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:07,215 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:59:07,215 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:59:07,221 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:07,222 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:07,222 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:07,222 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:59:07,223 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:07,223 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:07,223 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:07,224 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:59:07,225 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:59:07,232 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:07,232 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-18 10:59:07,232 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:07,233 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:07,233 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:07,234 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:07,234 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-18 10:59:07,236 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-11-18 10:59:07,236 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-11-18 10:59:07,240 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:07,240 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 [2018-11-18 10:59:07,241 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:07,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:07,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:07,241 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-18 10:59:07,244 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-11-18 10:59:07,244 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-11-18 10:59:07,251 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:07,251 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:07,252 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:07,252 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:59:07,252 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:07,252 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:07,252 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-18 10:59:07,255 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-18 10:59:07,255 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:59:07,264 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:59:07,278 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2018-11-18 10:59:07,279 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-18 10:59:07,281 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:59:07,281 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:59:07,281 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:59:07,281 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 [] [2018-11-18 10:59:07,283 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:59:07,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:07,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:07,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:07,374 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 10:59:07,375 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 10:59:07,411 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 18 states and 21 transitions. Complement of second has 7 states. [2018-11-18 10:59:07,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:59:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:59:07,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 10:59:07,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 5 letters. [2018-11-18 10:59:07,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:07,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 5 letters. [2018-11-18 10:59:07,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:07,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 10 letters. [2018-11-18 10:59:07,415 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:07,415 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 21 transitions. [2018-11-18 10:59:07,415 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 10:59:07,416 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 17 states and 20 transitions. [2018-11-18 10:59:07,416 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 10:59:07,416 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-18 10:59:07,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 20 transitions. [2018-11-18 10:59:07,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:59:07,416 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-18 10:59:07,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 20 transitions. [2018-11-18 10:59:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 10:59:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 10:59:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-11-18 10:59:07,418 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-18 10:59:07,418 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-18 10:59:07,418 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 10:59:07,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2018-11-18 10:59:07,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 10:59:07,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:59:07,420 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:59:07,420 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:59:07,420 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 10:59:07,420 INFO L794 eck$LassoCheckResult]: Stem: 118#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 109#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~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; 110#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 117#L22-3 assume true; 115#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 111#L24-3 assume true; 112#L24-1 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 119#L24-3 [2018-11-18 10:59:07,420 INFO L796 eck$LassoCheckResult]: Loop: 119#L24-3 assume true; 125#L24-1 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 119#L24-3 [2018-11-18 10:59:07,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:07,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1804969390, now seen corresponding path program 1 times [2018-11-18 10:59:07,421 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:07,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:07,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:07,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:07,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1575, now seen corresponding path program 1 times [2018-11-18 10:59:07,428 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:07,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:07,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:07,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:07,433 INFO L82 PathProgramCache]: Analyzing trace with hash -591203180, now seen corresponding path program 2 times [2018-11-18 10:59:07,435 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:07,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:07,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:07,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,463 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:07,463 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:07,463 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:07,464 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:07,464 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:59:07,464 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:07,464 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:07,464 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:07,464 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 10:59:07,464 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:07,464 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:07,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,520 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:07,520 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:07,526 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:07,526 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:07,542 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:59:07,543 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_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:07,545 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:07,545 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:07,567 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:59:07,567 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:07,582 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:59:07,583 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_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:07,602 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:07,602 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:07,619 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:59:07,619 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_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:07,630 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:07,630 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:07,650 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:59:07,651 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:07,776 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:59:07,777 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:07,777 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:07,778 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:07,778 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:07,778 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:59:07,778 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:07,778 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:07,778 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:07,778 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 10:59:07,778 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:07,778 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:07,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,835 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:07,836 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:59:07,836 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:07,836 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:07,837 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:07,837 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:07,837 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:07,838 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:59:07,838 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:59:07,840 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:07,840 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:07,841 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:07,841 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:59:07,841 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:07,841 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:07,841 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:07,842 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:59:07,842 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:59:07,844 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:07,844 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:07,845 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:07,845 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:59:07,845 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:07,845 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:07,845 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:07,846 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:59:07,846 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:59:07,848 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:59:07,851 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 10:59:07,851 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 10:59:07,852 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:59:07,852 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:59:07,852 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:59:07,852 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 [] [2018-11-18 10:59:07,852 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:59:07,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:07,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:07,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:07,874 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 10:59:07,874 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-18 10:59:07,880 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 23 states and 28 transitions. Complement of second has 5 states. [2018-11-18 10:59:07,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 10:59:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 10:59:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-11-18 10:59:07,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-18 10:59:07,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:07,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2018-11-18 10:59:07,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:07,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 10:59:07,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:07,882 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2018-11-18 10:59:07,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 10:59:07,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 22 states and 27 transitions. [2018-11-18 10:59:07,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-18 10:59:07,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-18 10:59:07,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 27 transitions. [2018-11-18 10:59:07,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:59:07,884 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2018-11-18 10:59:07,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 27 transitions. [2018-11-18 10:59:07,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-11-18 10:59:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 10:59:07,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2018-11-18 10:59:07,885 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2018-11-18 10:59:07,885 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2018-11-18 10:59:07,885 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 10:59:07,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 26 transitions. [2018-11-18 10:59:07,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 10:59:07,886 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:59:07,886 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:59:07,886 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:59:07,886 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 10:59:07,886 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~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; 197#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 206#L22-3 assume true; 211#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 216#L24-3 assume true; 215#L24-1 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 214#L24-3 assume true; 205#L24-1 assume !(main_~y~0 < main_~z~0); 208#L24-4 [2018-11-18 10:59:07,887 INFO L796 eck$LassoCheckResult]: Loop: 208#L24-4 main_~y~0 := main_~x~0 + main_~y~0; 209#L22-3 assume true; 198#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 199#L24-3 assume true; 202#L24-1 assume !(main_~y~0 < main_~z~0); 208#L24-4 [2018-11-18 10:59:07,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:07,887 INFO L82 PathProgramCache]: Analyzing trace with hash -591203182, now seen corresponding path program 1 times [2018-11-18 10:59:07,887 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:07,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:07,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:59:07,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:07,893 INFO L82 PathProgramCache]: Analyzing trace with hash 55694406, now seen corresponding path program 2 times [2018-11-18 10:59:07,893 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:07,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:07,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:07,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:07,897 INFO L82 PathProgramCache]: Analyzing trace with hash 632689237, now seen corresponding path program 1 times [2018-11-18 10:59:07,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:07,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:07,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:59:07,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:07,913 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:07,913 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:07,913 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:07,913 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:07,914 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:59:07,914 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:07,914 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:07,914 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:07,914 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 10:59:07,914 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:07,914 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:07,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:07,965 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:07,965 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:07,968 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:07,968 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/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 [2018-11-18 10:59:07,999 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:59:07,999 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:10,119 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:59:10,121 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:10,121 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:10,121 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:10,121 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:10,121 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:59:10,121 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:10,121 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:10,121 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:10,122 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 10:59:10,122 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:10,122 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:10,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:10,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:10,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:10,161 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:10,161 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:59:10,162 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:10,162 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:10,162 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:59:10,162 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:10,163 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:10,163 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:10,163 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:59:10,163 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:59:10,166 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:10,166 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:10,167 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:10,167 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:10,167 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:10,167 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:10,168 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:59:10,168 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:59:10,171 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:10,171 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:10,172 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:10,172 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:10,172 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:10,172 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:10,173 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:59:10,173 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:59:10,175 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:10,175 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-18 10:59:10,175 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:10,176 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:10,176 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:59:10,176 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:10,176 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:10,176 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-18 10:59:10,177 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-18 10:59:10,177 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:59:10,181 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:59:10,186 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-18 10:59:10,187 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-18 10:59:10,187 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:59:10,187 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:59:10,187 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:59:10,187 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 [] [2018-11-18 10:59:10,188 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:59:10,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:10,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:10,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:10,282 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 [2018-11-18 10:59:10,282 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-18 10:59:10,304 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 49 states and 59 transitions. Complement of second has 7 states. [2018-11-18 10:59:10,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:59:10,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:59:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-18 10:59:10,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 5 letters. [2018-11-18 10:59:10,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:10,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 14 letters. Loop has 5 letters. [2018-11-18 10:59:10,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:10,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 10 letters. [2018-11-18 10:59:10,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:10,306 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 59 transitions. [2018-11-18 10:59:10,307 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 10:59:10,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 39 states and 47 transitions. [2018-11-18 10:59:10,308 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-18 10:59:10,308 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-11-18 10:59:10,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 47 transitions. [2018-11-18 10:59:10,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:59:10,308 INFO L705 BuchiCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-11-18 10:59:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 47 transitions. [2018-11-18 10:59:10,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-11-18 10:59:10,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 10:59:10,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2018-11-18 10:59:10,311 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-11-18 10:59:10,311 INFO L608 BuchiCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-11-18 10:59:10,311 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 10:59:10,311 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 43 transitions. [2018-11-18 10:59:10,312 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 10:59:10,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:59:10,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:59:10,313 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2018-11-18 10:59:10,313 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 10:59:10,313 INFO L794 eck$LassoCheckResult]: Stem: 346#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 336#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~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; 337#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 345#L22-3 assume true; 344#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 340#L24-3 assume true; 341#L24-1 assume !(main_~y~0 < main_~z~0); 348#L24-4 main_~y~0 := main_~x~0 + main_~y~0; 353#L22-3 assume true; 366#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 338#L24-3 assume true; 339#L24-1 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 367#L24-3 assume true; 355#L24-1 assume !(main_~y~0 < main_~z~0); 354#L24-4 [2018-11-18 10:59:10,313 INFO L796 eck$LassoCheckResult]: Loop: 354#L24-4 main_~y~0 := main_~x~0 + main_~y~0; 349#L22-3 assume true; 342#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 343#L24-3 assume true; 363#L24-1 assume !(main_~y~0 < main_~z~0); 354#L24-4 [2018-11-18 10:59:10,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:10,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1313708193, now seen corresponding path program 2 times [2018-11-18 10:59:10,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:10,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:10,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:10,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:10,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:10,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:10,322 INFO L82 PathProgramCache]: Analyzing trace with hash 55694406, now seen corresponding path program 3 times [2018-11-18 10:59:10,322 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:10,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:10,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:10,323 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:59:10,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:10,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:10,327 INFO L82 PathProgramCache]: Analyzing trace with hash 248160166, now seen corresponding path program 3 times [2018-11-18 10:59:10,327 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:10,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:10,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:10,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:59:10,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:10,368 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:59:10,368 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:59:10,375 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 10:59:10,387 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 10:59:10,387 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 10:59:10,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:10,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:59:10,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-18 10:59:10,431 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:10,431 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:10,431 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:10,431 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:10,431 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:59:10,431 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:10,431 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:10,431 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:10,431 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-18 10:59:10,432 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:10,432 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:10,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:10,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:10,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:10,483 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:10,483 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:10,485 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:10,485 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:10,500 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:59:10,500 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_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:10,503 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:10,503 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:10,520 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:59:10,521 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:12,644 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:59:12,646 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:12,646 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:12,646 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:12,646 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:12,646 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:59:12,646 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:12,646 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:12,646 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:12,646 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-18 10:59:12,646 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:12,646 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:12,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:12,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:12,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:12,677 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:12,677 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:59:12,677 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:12,678 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:12,678 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:59:12,678 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:12,678 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:12,678 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:12,679 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:59:12,679 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:59:12,681 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:12,681 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:12,681 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:12,681 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:12,681 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:12,682 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:12,682 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:59:12,682 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:59:12,684 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:12,685 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:12,685 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:12,685 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:12,685 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:12,685 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:12,686 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:59:12,686 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:59:12,688 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:12,688 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-18 10:59:12,688 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:12,689 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:12,689 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:59:12,689 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:12,689 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:12,689 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-18 10:59:12,690 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-18 10:59:12,690 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:59:12,693 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:59:12,696 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 10:59:12,697 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-18 10:59:12,697 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:59:12,697 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:59:12,697 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:59:12,697 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_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-18 10:59:12,698 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:59:12,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:12,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:12,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:12,824 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 [2018-11-18 10:59:12,824 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 43 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-11-18 10:59:12,848 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 43 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 51 states and 61 transitions. Complement of second has 7 states. [2018-11-18 10:59:12,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:59:12,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:59:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-18 10:59:12,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 14 letters. Loop has 5 letters. [2018-11-18 10:59:12,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:12,849 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 10:59:12,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:12,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:12,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:12,923 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 [2018-11-18 10:59:12,923 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 43 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-11-18 10:59:12,939 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 43 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 50 states and 59 transitions. Complement of second has 7 states. [2018-11-18 10:59:12,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:59:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:59:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-18 10:59:12,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 14 letters. Loop has 5 letters. [2018-11-18 10:59:12,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:12,942 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 10:59:12,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:12,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:12,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:13,020 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 [2018-11-18 10:59:13,020 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 43 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-11-18 10:59:13,035 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 43 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 58 states and 70 transitions. Complement of second has 8 states. [2018-11-18 10:59:13,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:59:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:59:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-11-18 10:59:13,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 14 letters. Loop has 5 letters. [2018-11-18 10:59:13,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:13,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 19 letters. Loop has 5 letters. [2018-11-18 10:59:13,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:13,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 14 letters. Loop has 10 letters. [2018-11-18 10:59:13,037 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:13,037 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 70 transitions. [2018-11-18 10:59:13,039 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 10:59:13,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 43 states and 52 transitions. [2018-11-18 10:59:13,039 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-11-18 10:59:13,039 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2018-11-18 10:59:13,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 52 transitions. [2018-11-18 10:59:13,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:59:13,040 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-18 10:59:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 52 transitions. [2018-11-18 10:59:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 25. [2018-11-18 10:59:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 10:59:13,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2018-11-18 10:59:13,041 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2018-11-18 10:59:13,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 10:59:13,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-18 10:59:13,042 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 8 states. [2018-11-18 10:59:13,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:13,100 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-11-18 10:59:13,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 10:59:13,100 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 50 transitions. [2018-11-18 10:59:13,101 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 10:59:13,102 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 41 states and 49 transitions. [2018-11-18 10:59:13,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2018-11-18 10:59:13,102 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-11-18 10:59:13,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 49 transitions. [2018-11-18 10:59:13,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:59:13,102 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-11-18 10:59:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 49 transitions. [2018-11-18 10:59:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2018-11-18 10:59:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 10:59:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 10:59:13,104 INFO L728 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 10:59:13,104 INFO L608 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 10:59:13,104 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 10:59:13,104 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 44 transitions. [2018-11-18 10:59:13,104 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 10:59:13,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:59:13,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:59:13,105 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 10:59:13,105 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2018-11-18 10:59:13,105 INFO L794 eck$LassoCheckResult]: Stem: 898#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 889#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~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; 890#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 891#L22-3 assume true; 915#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 914#L24-3 assume true; 913#L24-1 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 912#L24-3 assume true; 909#L24-1 assume !(main_~y~0 < main_~z~0); 905#L24-4 main_~y~0 := main_~x~0 + main_~y~0; 903#L22-3 assume true; 904#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 922#L24-3 assume true; 896#L24-1 [2018-11-18 10:59:13,105 INFO L796 eck$LassoCheckResult]: Loop: 896#L24-1 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 916#L24-3 assume true; 917#L24-1 assume !(main_~y~0 < main_~z~0); 907#L24-4 main_~y~0 := main_~x~0 + main_~y~0; 902#L22-3 assume true; 892#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 893#L24-3 assume true; 896#L24-1 [2018-11-18 10:59:13,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:13,105 INFO L82 PathProgramCache]: Analyzing trace with hash 574598658, now seen corresponding path program 4 times [2018-11-18 10:59:13,105 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:13,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:13,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,106 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:59:13,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:13,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1273333492, now seen corresponding path program 1 times [2018-11-18 10:59:13,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:13,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:13,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:59:13,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:13,116 INFO L82 PathProgramCache]: Analyzing trace with hash -782485525, now seen corresponding path program 5 times [2018-11-18 10:59:13,116 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:13,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:13,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:13,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,161 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:13,161 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:13,161 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:13,161 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:13,161 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:59:13,161 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:13,161 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:13,161 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:13,161 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-18 10:59:13,161 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:13,161 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:13,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,225 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:13,226 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:13,229 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:13,229 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:13,249 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:59:13,249 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:13,388 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:59:13,390 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:13,390 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:13,390 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:13,390 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:13,390 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:59:13,390 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:13,390 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:13,390 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:13,390 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-18 10:59:13,390 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:13,390 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:13,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,431 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:13,431 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:59:13,431 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:13,431 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:13,431 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:13,431 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:13,432 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:13,432 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:59:13,432 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:59:13,433 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:13,434 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:13,434 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:13,434 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:59:13,434 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:13,434 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:13,434 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:13,435 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:59:13,435 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:59:13,441 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:59:13,444 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 10:59:13,444 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 10:59:13,445 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:59:13,445 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:59:13,445 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:59:13,445 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~z~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-18 10:59:13,445 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:59:13,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:13,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:13,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:13,493 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-18 10:59:13,493 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 44 transitions. cyclomatic complexity: 13 Second operand 5 states. [2018-11-18 10:59:13,509 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 44 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 74 states and 93 transitions. Complement of second has 8 states. [2018-11-18 10:59:13,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-18 10:59:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 10:59:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-18 10:59:13,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 13 letters. Loop has 7 letters. [2018-11-18 10:59:13,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:13,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 20 letters. Loop has 7 letters. [2018-11-18 10:59:13,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:13,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 13 letters. Loop has 14 letters. [2018-11-18 10:59:13,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:13,511 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 93 transitions. [2018-11-18 10:59:13,512 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 10:59:13,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 52 states and 65 transitions. [2018-11-18 10:59:13,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 10:59:13,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-18 10:59:13,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2018-11-18 10:59:13,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:59:13,513 INFO L705 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2018-11-18 10:59:13,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2018-11-18 10:59:13,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2018-11-18 10:59:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 10:59:13,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2018-11-18 10:59:13,516 INFO L728 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-11-18 10:59:13,516 INFO L608 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-11-18 10:59:13,516 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 10:59:13,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 54 transitions. [2018-11-18 10:59:13,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 10:59:13,516 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:59:13,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:59:13,518 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 10:59:13,518 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 10:59:13,518 INFO L794 eck$LassoCheckResult]: Stem: 1098#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1087#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~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; 1088#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 1097#L22-3 assume true; 1102#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 1111#L24-3 assume true; 1099#L24-1 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 1100#L24-3 assume true; 1123#L24-1 assume !(main_~y~0 < main_~z~0); 1122#L24-4 main_~y~0 := main_~x~0 + main_~y~0; 1121#L22-3 assume true; 1120#L22-1 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 1119#L24-3 assume true; 1090#L24-1 [2018-11-18 10:59:13,518 INFO L796 eck$LassoCheckResult]: Loop: 1090#L24-1 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 1089#L24-3 assume true; 1090#L24-1 [2018-11-18 10:59:13,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:13,518 INFO L82 PathProgramCache]: Analyzing trace with hash 574598658, now seen corresponding path program 6 times [2018-11-18 10:59:13,519 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:13,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:13,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:59:13,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:13,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1755, now seen corresponding path program 2 times [2018-11-18 10:59:13,524 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:13,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:13,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:59:13,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:13,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1861470052, now seen corresponding path program 7 times [2018-11-18 10:59:13,528 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:13,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:13,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,529 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:59:13,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:13,559 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:13,559 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:13,559 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:13,559 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:13,559 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:59:13,559 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:13,559 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:13,559 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:13,559 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-18 10:59:13,559 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:13,559 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:13,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,588 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:13,589 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:13,591 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:13,592 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:13,607 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:59:13,607 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_26e9ba19-af85-4551-ac17-3eb48810f8ab/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:13,614 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:13,615 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:13,639 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:59:13,639 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_26e9ba19-af85-4551-ac17-3eb48810f8ab/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 [2018-11-18 10:59:13,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:59:13,643 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26e9ba19-af85-4551-ac17-3eb48810f8ab/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 [2018-11-18 10:59:13,669 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:59:13,669 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:59:13,792 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:59:13,793 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:59:13,793 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:59:13,793 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:59:13,793 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:59:13,793 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:59:13,793 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:59:13,794 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:59:13,794 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:59:13,794 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-18 10:59:13,794 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:59:13,794 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:59:13,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:59:13,827 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:59:13,828 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:59:13,828 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:13,828 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:13,828 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:13,828 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:13,828 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:13,829 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:59:13,829 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:59:13,830 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:59:13,831 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:59:13,831 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:59:13,831 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:59:13,831 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:59:13,831 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:59:13,831 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:59:13,832 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:59:13,832 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:59:13,833 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:59:13,834 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 10:59:13,834 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 10:59:13,835 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:59:13,835 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:59:13,835 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:59:13,835 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 [] [2018-11-18 10:59:13,835 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:59:13,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:13,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:13,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:13,866 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 10:59:13,866 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 54 transitions. cyclomatic complexity: 18 Second operand 3 states. [2018-11-18 10:59:13,874 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 54 transitions. cyclomatic complexity: 18. Second operand 3 states. Result 51 states and 62 transitions. Complement of second has 5 states. [2018-11-18 10:59:13,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 10:59:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 10:59:13,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-11-18 10:59:13,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-18 10:59:13,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:13,875 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 10:59:13,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:13,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:13,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:13,897 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 10:59:13,897 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 54 transitions. cyclomatic complexity: 18 Second operand 3 states. [2018-11-18 10:59:13,907 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 54 transitions. cyclomatic complexity: 18. Second operand 3 states. Result 50 states and 62 transitions. Complement of second has 7 states. [2018-11-18 10:59:13,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:59:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 10:59:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-18 10:59:13,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-18 10:59:13,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:13,908 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 10:59:13,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:13,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:13,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:59:13,938 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 10:59:13,938 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 54 transitions. cyclomatic complexity: 18 Second operand 3 states. [2018-11-18 10:59:13,946 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 54 transitions. cyclomatic complexity: 18. Second operand 3 states. Result 56 states and 68 transitions. Complement of second has 6 states. [2018-11-18 10:59:13,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 10:59:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 10:59:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2018-11-18 10:59:13,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-18 10:59:13,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:13,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 15 letters. Loop has 2 letters. [2018-11-18 10:59:13,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:13,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-18 10:59:13,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:59:13,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 68 transitions. [2018-11-18 10:59:13,949 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 10:59:13,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 0 states and 0 transitions. [2018-11-18 10:59:13,949 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 10:59:13,949 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 10:59:13,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 10:59:13,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 10:59:13,950 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:59:13,950 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:59:13,950 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:59:13,950 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-18 10:59:13,950 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:59:13,950 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 10:59:13,950 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 10:59:13,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 10:59:13 BoogieIcfgContainer [2018-11-18 10:59:13,958 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 10:59:13,958 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:59:13,958 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:59:13,958 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:59:13,959 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:59:04" (3/4) ... [2018-11-18 10:59:13,963 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 10:59:13,963 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:59:13,964 INFO L168 Benchmark]: Toolchain (without parser) took 9323.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 961.9 MB in the beginning and 872.5 MB in the end (delta: 89.5 MB). Peak memory consumption was 226.3 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:13,965 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:59:13,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.89 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:13,966 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.83 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:13,966 INFO L168 Benchmark]: Boogie Preprocessor took 10.96 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:59:13,967 INFO L168 Benchmark]: RCFGBuilder took 164.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:13,967 INFO L168 Benchmark]: BuchiAutomizer took 8966.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.5 MB in the end (delta: 250.2 MB). Peak memory consumption was 250.2 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:13,967 INFO L168 Benchmark]: Witness Printer took 5.53 ms. Allocated memory is still 1.2 GB. Free memory is still 872.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:59:13,970 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.89 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 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 17.83 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.96 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 164.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 8966.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.5 MB in the end (delta: 250.2 MB). Peak memory consumption was 250.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.53 ms. Allocated memory is still 1.2 GB. Free memory is still 872.5 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 8 terminating modules (2 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 4 locations. One deterministic module has affine ranking function -1 * y + z and consists of 3 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 4 locations. One deterministic module has affine ranking function z + x and consists of 5 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else x + y) and consists of 4 locations. One nondeterministic module has affine ranking function -1 * y + z and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.9s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 7.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 37 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 43 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/2 HoareTripleCheckerStatistics: 116 SDtfs, 100 SDslu, 56 SDs, 0 SdLazy, 158 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax165 hnf97 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp97 dnf100 smp100 tf108 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 6.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...