./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/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 0455ba49274114922cfe1b7739d9cb0a89e6c868 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 12:48:33,689 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 12:48:33,690 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 12:48:33,696 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 12:48:33,697 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 12:48:33,697 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 12:48:33,698 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 12:48:33,699 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 12:48:33,700 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 12:48:33,700 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 12:48:33,701 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 12:48:33,701 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 12:48:33,702 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 12:48:33,702 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 12:48:33,703 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 12:48:33,703 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 12:48:33,704 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 12:48:33,705 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 12:48:33,706 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 12:48:33,707 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 12:48:33,708 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 12:48:33,708 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 12:48:33,709 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 12:48:33,710 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 12:48:33,710 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 12:48:33,710 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 12:48:33,711 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 12:48:33,711 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 12:48:33,712 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 12:48:33,712 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 12:48:33,712 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 12:48:33,713 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 12:48:33,713 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 12:48:33,713 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 12:48:33,714 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 12:48:33,714 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 12:48:33,714 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-08 12:48:33,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 12:48:33,723 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 12:48:33,723 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 12:48:33,723 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 12:48:33,724 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 12:48:33,724 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 12:48:33,724 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 12:48:33,724 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 12:48:33,724 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 12:48:33,724 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 12:48:33,724 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 12:48:33,724 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 12:48:33,724 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 12:48:33,725 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 12:48:33,725 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 12:48:33,725 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 12:48:33,725 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 12:48:33,725 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 12:48:33,725 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 12:48:33,725 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 12:48:33,725 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 12:48:33,725 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 12:48:33,726 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 12:48:33,726 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 12:48:33,726 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 12:48:33,726 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 12:48:33,726 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 12:48:33,726 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 12:48:33,727 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 12:48:33,727 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_ff12dfc4-ce0c-4739-960c-3413ced955cc/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 -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2018-12-08 12:48:33,744 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 12:48:33,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 12:48:33,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 12:48:33,756 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 12:48:33,757 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 12:48:33,757 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-12-08 12:48:33,802 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/data/6ee5af0e1/9fb959de8ee841a2b6c82313492ddaf9/FLAGc108e145e [2018-12-08 12:48:34,149 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 12:48:34,149 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-12-08 12:48:34,153 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/data/6ee5af0e1/9fb959de8ee841a2b6c82313492ddaf9/FLAGc108e145e [2018-12-08 12:48:34,536 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/data/6ee5af0e1/9fb959de8ee841a2b6c82313492ddaf9 [2018-12-08 12:48:34,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 12:48:34,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 12:48:34,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 12:48:34,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 12:48:34,544 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 12:48:34,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 12:48:34" (1/1) ... [2018-12-08 12:48:34,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432dabb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34, skipping insertion in model container [2018-12-08 12:48:34,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 12:48:34" (1/1) ... [2018-12-08 12:48:34,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 12:48:34,562 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 12:48:34,645 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 12:48:34,647 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 12:48:34,655 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 12:48:34,663 INFO L195 MainTranslator]: Completed translation [2018-12-08 12:48:34,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34 WrapperNode [2018-12-08 12:48:34,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 12:48:34,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 12:48:34,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 12:48:34,664 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 12:48:34,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34" (1/1) ... [2018-12-08 12:48:34,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34" (1/1) ... [2018-12-08 12:48:34,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 12:48:34,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 12:48:34,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 12:48:34,684 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 12:48:34,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34" (1/1) ... [2018-12-08 12:48:34,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34" (1/1) ... [2018-12-08 12:48:34,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34" (1/1) ... [2018-12-08 12:48:34,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34" (1/1) ... [2018-12-08 12:48:34,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34" (1/1) ... [2018-12-08 12:48:34,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34" (1/1) ... [2018-12-08 12:48:34,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34" (1/1) ... [2018-12-08 12:48:34,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 12:48:34,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 12:48:34,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 12:48:34,695 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 12:48:34,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 12:48:34,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 12:48:34,822 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 12:48:34,822 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-08 12:48:34,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 12:48:34 BoogieIcfgContainer [2018-12-08 12:48:34,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 12:48:34,823 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 12:48:34,823 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 12:48:34,825 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 12:48:34,826 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 12:48:34,826 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 12:48:34" (1/3) ... [2018-12-08 12:48:34,827 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bd65ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 12:48:34, skipping insertion in model container [2018-12-08 12:48:34,827 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 12:48:34,827 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:48:34" (2/3) ... [2018-12-08 12:48:34,827 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bd65ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 12:48:34, skipping insertion in model container [2018-12-08 12:48:34,827 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 12:48:34,827 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 12:48:34" (3/3) ... [2018-12-08 12:48:34,828 INFO L375 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-12-08 12:48:34,859 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 12:48:34,860 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 12:48:34,860 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 12:48:34,860 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 12:48:34,860 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 12:48:34,860 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 12:48:34,860 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 12:48:34,860 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 12:48:34,860 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 12:48:34,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-08 12:48:34,880 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 12:48:34,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 12:48:34,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 12:48:34,883 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 12:48:34,883 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 12:48:34,884 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 12:48:34,884 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-08 12:48:34,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 12:48:34,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 12:48:34,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 12:48:34,884 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 12:48:34,884 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 12:48:34,889 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 6#L18-2true [2018-12-08 12:48:34,889 INFO L796 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~y~0 >= 0); 9#L19true assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 7#L19-2true main_~x~0 := 1 + main_~x~0; 6#L18-2true [2018-12-08 12:48:34,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:34,892 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-08 12:48:34,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:48:34,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:48:34,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:34,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:48:34,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:34,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:34,947 INFO L82 PathProgramCache]: Analyzing trace with hash 39821, now seen corresponding path program 1 times [2018-12-08 12:48:34,947 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:48:34,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:48:34,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:34,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:48:34,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:34,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:34,955 INFO L82 PathProgramCache]: Analyzing trace with hash 963342, now seen corresponding path program 1 times [2018-12-08 12:48:34,955 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:48:34,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:48:34,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:34,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:48:34,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:34,989 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 12:48:34,989 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 12:48:34,990 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 12:48:34,990 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 12:48:34,990 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 12:48:34,990 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:34,990 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 12:48:34,990 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 12:48:34,990 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration1_Loop [2018-12-08 12:48:34,990 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 12:48:34,990 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 12:48:35,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,078 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 12:48:35,079 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,083 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 12:48:35,083 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 12:48:35,102 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 12:48:35,102 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_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,105 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 12:48:35,106 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 12:48:35,120 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 12:48:35,120 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_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,123 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 12:48:35,123 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,140 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 12:48:35,140 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 12:48:35,146 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 12:48:35,147 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0}, {ULTIMATE.start_main_~y~0=0}, {ULTIMATE.start_main_~y~0=1}] Lambdas: [0, 0, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,161 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 12:48:35,161 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,178 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 12:48:35,178 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 12:48:35,194 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 12:48:35,195 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 12:48:35,195 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 12:48:35,195 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 12:48:35,195 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 12:48:35,196 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 12:48:35,196 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,196 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 12:48:35,196 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 12:48:35,196 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration1_Loop [2018-12-08 12:48:35,196 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 12:48:35,196 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 12:48:35,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,249 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 12:48:35,253 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 12:48:35,255 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 12:48:35,256 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 12:48:35,256 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 12:48:35,256 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 12:48:35,257 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 12:48:35,260 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 12:48:35,260 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 12:48:35,266 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 12:48:35,266 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 12:48:35,267 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 12:48:35,267 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 12:48:35,267 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 12:48:35,267 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 12:48:35,269 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 12:48:35,269 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 12:48:35,275 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 12:48:35,276 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 12:48:35,276 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 12:48:35,276 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 12:48:35,277 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 12:48:35,277 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 12:48:35,277 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 12:48:35,278 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 12:48:35,278 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 12:48:35,282 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 12:48:35,282 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 12:48:35,283 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 12:48:35,283 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 12:48:35,283 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 12:48:35,283 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 12:48:35,283 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 12:48:35,284 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 12:48:35,284 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 12:48:35,288 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 12:48:35,291 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 12:48:35,291 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 12:48:35,292 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 12:48:35,292 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 12:48:35,293 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 12:48:35,293 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 101 Supporting invariants [] [2018-12-08 12:48:35,294 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 12:48:35,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:35,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:48:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:35,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:48:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:48:35,352 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 12:48:35,353 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2018-12-08 12:48:35,382 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 25 states and 35 transitions. Complement of second has 7 states. [2018-12-08 12:48:35,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 12:48:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 12:48:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2018-12-08 12:48:35,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2018-12-08 12:48:35,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 12:48:35,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2018-12-08 12:48:35,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 12:48:35,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2018-12-08 12:48:35,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 12:48:35,386 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 35 transitions. [2018-12-08 12:48:35,388 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 12:48:35,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 11 states and 14 transitions. [2018-12-08 12:48:35,391 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-08 12:48:35,391 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-12-08 12:48:35,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-12-08 12:48:35,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 12:48:35,392 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-12-08 12:48:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-12-08 12:48:35,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-12-08 12:48:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-08 12:48:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-12-08 12:48:35,407 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-12-08 12:48:35,407 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-12-08 12:48:35,407 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 12:48:35,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2018-12-08 12:48:35,408 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 12:48:35,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 12:48:35,408 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 12:48:35,408 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-08 12:48:35,408 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 12:48:35,408 INFO L794 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 77#L18-2 assume !!(main_~y~0 >= 0); 73#L19 [2018-12-08 12:48:35,408 INFO L796 eck$LassoCheckResult]: Loop: 73#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 78#L19-2 main_~x~0 := 1 + main_~x~0; 72#L18-2 assume !!(main_~y~0 >= 0); 73#L19 [2018-12-08 12:48:35,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:35,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-12-08 12:48:35,409 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:48:35,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:48:35,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:48:35,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:35,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:35,413 INFO L82 PathProgramCache]: Analyzing trace with hash 44743, now seen corresponding path program 1 times [2018-12-08 12:48:35,413 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:48:35,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:48:35,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:48:35,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:35,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:35,419 INFO L82 PathProgramCache]: Analyzing trace with hash 29865534, now seen corresponding path program 1 times [2018-12-08 12:48:35,419 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:48:35,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:48:35,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:48:35,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:48:35,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 12:48:35,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 12:48:35,454 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 12:48:35,454 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 12:48:35,454 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 12:48:35,454 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 12:48:35,454 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 12:48:35,454 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,454 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 12:48:35,454 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 12:48:35,454 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration2_Loop [2018-12-08 12:48:35,454 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 12:48:35,454 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 12:48:35,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,499 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 12:48:35,499 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,501 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 12:48:35,501 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 12:48:35,515 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 12:48:35,515 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_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,518 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 12:48:35,518 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 12:48:35,533 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 12:48:35,533 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_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,535 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 12:48:35,535 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,550 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 12:48:35,551 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 12:48:35,556 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 12:48:35,557 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=51} Honda state: {ULTIMATE.start_main_~x~0=51} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,571 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 12:48:35,571 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,588 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 12:48:35,589 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 12:48:35,619 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 12:48:35,620 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 12:48:35,620 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 12:48:35,620 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 12:48:35,620 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 12:48:35,620 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 12:48:35,620 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,620 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 12:48:35,621 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 12:48:35,621 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration2_Loop [2018-12-08 12:48:35,621 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 12:48:35,621 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 12:48:35,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,672 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 12:48:35,672 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 12:48:35,673 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 12:48:35,673 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 12:48:35,673 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 12:48:35,673 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 12:48:35,673 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 12:48:35,674 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 12:48:35,675 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 12:48:35,678 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 12:48:35,678 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 12:48:35,679 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 12:48:35,679 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 12:48:35,679 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 12:48:35,679 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 12:48:35,679 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 12:48:35,680 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 12:48:35,680 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 12:48:35,683 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 12:48:35,683 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 12:48:35,684 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 12:48:35,684 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 12:48:35,684 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 12:48:35,684 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 12:48:35,685 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 12:48:35,685 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 12:48:35,689 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 12:48:35,689 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 12:48:35,690 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 12:48:35,690 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 12:48:35,690 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 12:48:35,690 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 12:48:35,690 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 12:48:35,691 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 12:48:35,691 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 12:48:35,693 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 12:48:35,695 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 12:48:35,696 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 12:48:35,696 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 12:48:35,696 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 12:48:35,696 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 12:48:35,696 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-08 12:48:35,697 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 12:48:35,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:35,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:48:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:35,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:48:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:48:35,722 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 12:48:35,722 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 12:48:35,733 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 21 states and 26 transitions. Complement of second has 5 states. [2018-12-08 12:48:35,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 12:48:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 12:48:35,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-12-08 12:48:35,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 3 letters. [2018-12-08 12:48:35,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 12:48:35,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-08 12:48:35,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 12:48:35,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 6 letters. [2018-12-08 12:48:35,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 12:48:35,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2018-12-08 12:48:35,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 12:48:35,736 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 13 states and 16 transitions. [2018-12-08 12:48:35,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-08 12:48:35,737 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-08 12:48:35,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2018-12-08 12:48:35,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 12:48:35,737 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-12-08 12:48:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2018-12-08 12:48:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2018-12-08 12:48:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-08 12:48:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-12-08 12:48:35,738 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-12-08 12:48:35,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 12:48:35,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 12:48:35,741 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2018-12-08 12:48:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:48:35,748 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2018-12-08 12:48:35,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 12:48:35,749 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2018-12-08 12:48:35,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 12:48:35,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2018-12-08 12:48:35,750 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-08 12:48:35,750 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-08 12:48:35,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2018-12-08 12:48:35,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 12:48:35,750 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-12-08 12:48:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2018-12-08 12:48:35,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-12-08 12:48:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-08 12:48:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-12-08 12:48:35,751 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-12-08 12:48:35,751 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-12-08 12:48:35,751 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 12:48:35,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2018-12-08 12:48:35,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 12:48:35,752 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 12:48:35,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 12:48:35,752 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-12-08 12:48:35,752 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 12:48:35,753 INFO L794 eck$LassoCheckResult]: Stem: 166#ULTIMATE.startENTRY havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 162#L18-2 assume !!(main_~y~0 >= 0); 163#L19 assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 171#L19-2 main_~x~0 := 1 + main_~x~0; 172#L18-2 assume !!(main_~y~0 >= 0); 170#L19 [2018-12-08 12:48:35,753 INFO L796 eck$LassoCheckResult]: Loop: 170#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 167#L19-2 main_~x~0 := 1 + main_~x~0; 168#L18-2 assume !!(main_~y~0 >= 0); 170#L19 [2018-12-08 12:48:35,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:35,753 INFO L82 PathProgramCache]: Analyzing trace with hash 29863612, now seen corresponding path program 2 times [2018-12-08 12:48:35,753 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:48:35,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:48:35,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:48:35,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:35,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:35,759 INFO L82 PathProgramCache]: Analyzing trace with hash 44743, now seen corresponding path program 2 times [2018-12-08 12:48:35,759 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:48:35,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:48:35,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 12:48:35,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 12:48:35,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:35,764 INFO L82 PathProgramCache]: Analyzing trace with hash 608649772, now seen corresponding path program 1 times [2018-12-08 12:48:35,764 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:48:35,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:48:35,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 12:48:35,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:48:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:48:35,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 12:48:35,777 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/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 [2018-12-08 12:48:35,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:48:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:35,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:48:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:48:35,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 12:48:35,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-12-08 12:48:35,815 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 12:48:35,816 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 12:48:35,816 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 12:48:35,816 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 12:48:35,816 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 12:48:35,816 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,816 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 12:48:35,816 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 12:48:35,816 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration3_Loop [2018-12-08 12:48:35,816 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 12:48:35,816 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 12:48:35,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,865 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 12:48:35,865 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,866 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 12:48:35,866 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff12dfc4-ce0c-4739-960c-3413ced955cc/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,882 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 12:48:35,882 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 12:48:35,911 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 12:48:35,912 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 12:48:35,912 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 12:48:35,912 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 12:48:35,912 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 12:48:35,912 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 12:48:35,913 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 12:48:35,913 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 12:48:35,913 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 12:48:35,913 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration3_Loop [2018-12-08 12:48:35,913 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 12:48:35,913 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 12:48:35,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 12:48:35,948 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 12:48:35,948 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 12:48:35,948 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 12:48:35,948 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 12:48:35,949 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 12:48:35,949 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 12:48:35,949 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 12:48:35,949 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 12:48:35,949 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 12:48:35,949 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 12:48:35,951 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 12:48:35,952 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 12:48:35,952 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 12:48:35,952 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 12:48:35,952 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 12:48:35,952 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 12:48:35,952 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-08 12:48:35,953 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 12:48:35,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:35,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:48:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:35,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:48:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:48:35,973 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 12:48:35,973 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-12-08 12:48:35,976 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2018-12-08 12:48:35,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-08 12:48:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 12:48:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-12-08 12:48:35,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-08 12:48:35,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 12:48:35,977 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 12:48:35,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:35,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:48:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:35,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:48:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:48:35,997 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 [2018-12-08 12:48:35,998 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-12-08 12:48:36,000 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2018-12-08 12:48:36,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-08 12:48:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 12:48:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-12-08 12:48:36,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-08 12:48:36,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 12:48:36,001 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 12:48:36,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:48:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:36,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:48:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:48:36,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:48:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:48:36,021 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 [2018-12-08 12:48:36,021 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-12-08 12:48:36,030 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 16 states and 19 transitions. Complement of second has 4 states. [2018-12-08 12:48:36,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 12:48:36,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 12:48:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-12-08 12:48:36,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-08 12:48:36,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 12:48:36,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-12-08 12:48:36,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 12:48:36,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2018-12-08 12:48:36,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 12:48:36,031 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2018-12-08 12:48:36,032 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 12:48:36,032 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2018-12-08 12:48:36,032 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 12:48:36,032 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 12:48:36,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 12:48:36,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 12:48:36,032 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 12:48:36,032 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 12:48:36,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 12:48:36,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 12:48:36,033 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2018-12-08 12:48:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:48:36,033 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-08 12:48:36,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 12:48:36,033 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-08 12:48:36,033 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 12:48:36,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 12:48:36,033 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 12:48:36,034 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 12:48:36,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 12:48:36,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 12:48:36,034 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 12:48:36,034 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 12:48:36,034 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 12:48:36,034 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 12:48:36,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 12:48:36,034 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 12:48:36,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 12:48:36,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 12:48:36 BoogieIcfgContainer [2018-12-08 12:48:36,039 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 12:48:36,039 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 12:48:36,039 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 12:48:36,039 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 12:48:36,040 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 12:48:34" (3/4) ... [2018-12-08 12:48:36,042 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 12:48:36,042 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 12:48:36,042 INFO L168 Benchmark]: Toolchain (without parser) took 1503.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 961.4 MB in the beginning and 844.5 MB in the end (delta: 116.8 MB). Peak memory consumption was 226.9 MB. Max. memory is 11.5 GB. [2018-12-08 12:48:36,043 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 12:48:36,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.91 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 12:48:36,044 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.88 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 12:48:36,044 INFO L168 Benchmark]: Boogie Preprocessor took 10.23 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 12:48:36,044 INFO L168 Benchmark]: RCFGBuilder took 128.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -143.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-08 12:48:36,045 INFO L168 Benchmark]: BuchiAutomizer took 1215.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 844.5 MB in the end (delta: 242.4 MB). Peak memory consumption was 242.4 MB. Max. memory is 11.5 GB. [2018-12-08 12:48:36,045 INFO L168 Benchmark]: Witness Printer took 2.68 ms. Allocated memory is still 1.1 GB. Free memory is still 844.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 12:48:36,047 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 122.91 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 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 19.88 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.23 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 128.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -143.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1215.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 844.5 MB in the end (delta: 242.4 MB). Peak memory consumption was 242.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.68 ms. Allocated memory is still 1.1 GB. Free memory is still 844.5 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 101 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 13 SDs, 0 SdLazy, 33 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...